Headline
Apple, Google, and Microsoft Just Patched Some Spooky Security Flaws
Plus: Major vulnerability fixes are now available for a number of enterprise giants, including Cisco, VMWare, Citrix, and SAP.
October has been a security flaw-fest, with Apple, Microsoft, and Google issuing patches for vulnerabilities that are being used in real-life attacks. There were also multiple enterprise fixes during the month, with Cisco, VMWare, and Citrix fixing serious security bugs.
Some of the patches are more urgent than others, so read on to find out what you need to know about the updates released in October.
Apple iOS and iPad OS
October was a busy month for Apple, with the iPhone maker issuing its second set of fixes as part of iOS 17.1 at the end of the month. The two dozen security fixes in iOS 17.1 include patches for serious flaws in the Kernel at the heart of the iOS operating system and WebKit, the engine that underpins the Safari browser.
Tracked as CVE-2023-42849, the Kernel issue fixed in iOS 17.1 could allow an attacker that has already achieved code execution to bypass memory mitigations, Apple said on its support page. The three WebKit flaws—tracked as CVE-2023-40447, CVE-2023-41976, and CVE-2023-42852—could lead to arbitrary code execution.
Apple has also issued iOS and iPad OS 16.7.2, fixing the same flaws for users of older devices or those who don’t want to upgrade right away. They came alongside macOS Sonoma 14.1, macOS Ventura 13.6, macOS Monterey 12.7.1, tvOS 17.1, WatchOS 10.1, and Safari 17.1.
Earlier this month, Apple released iOS 17.0.3 and iOS 16.7.1, fixing issues being used in real-life attacks. Tracked as CVE-2023-42824, the first is a Kernel bug that could allow an attacker with access to your device to elevate their privileges.
Apple also fixed CVE-2023-5217, a buffer overflow flaw that could allow an attacker to execute code. Affecting multiple browsers and platforms, the bug has already been patched in Google’s Chrome browser.
Microsoft
Microsoft’s Patch Tuesday has seen the tech giant fix over 100 flaws, including two zero-day vulnerabilities in Microsoft WordPad and Skype for Business.
CVE-2023-36563 is an information disclosure bug in the WordPad word processing program that could expose NTLM hashes and result in NTLM relay attacks. However, it requires user interaction: The attacker must send someone a malicious file and convince them to open it, Microsoft said.
CVE-2023-41763 is an elevation of privilege vulnerability in Skype for Business. “An attacker could make a specially crafted network call to the target Skype for Business server, which could cause the parsing of an http request made to an arbitrary address,” potentially disclosing IP addresses or port numbers, Microsoft said.
Microsoft also patched a flaw in Message Queuing tracked as CVE-2023-35349 with a CVSS critical score of 9.8, which could allow an unauthenticated attacker to remotely execute code.
October’s Patch Tuesday is a particularly urgent one, so it’s important to update as soon as you can.
Google Chrome
Google has released 20 security fixes for its Chrome browser, including one patch for a flaw rated as critical. Tracked as CVE-2023-5218, the bug is a use-after-free issue in Site Isolation. Another six fixes cover inappropriate implementation vulnerabilities marked as having medium impact, while CVE-2023-5476 is a use-after-free flaw in Blink History. Another issue, CVE-2023-5474, is a heap buffer overflow in PDF, according to Google’s blog.
A further four inappropriate implementation vulnerabilities are rated as having a low impact, with Google also fixing a low severity use-after-free bug in Cast tracked as CVE-2023-5473.
None of the flaws fixed in October have been exploited, but given how actively the browser is targeted, it makes sense to update as soon as you can.
Google Android
Google’s October Android update was a major one because it fixed 53 issues, including two vulnerabilities already being used in real-life attacks. The first is CVE-2023-4863, a heap buffer overflow bug in libwebp affecting the applications that use the library to encode and decode images in the WebP format. This vulnerability impacts many applications and could be used to install spyware, security firm Malwarebytes wrote in a blog.
There are indications that the bug “may be under limited, targeted exploitation,” Google said in an advisory.
CVE-2023-4211 is an issue in Arm components rated as having a high impact, which Google said is also being used in attacks. “A local non-privileged user can make improper GPU memory processing operations to gain access to already freed memory,” Malwarebytes said, adding that the vulnerability affects multiple versions of Arm Mali GPU drivers. These are used in multiple Android device models, including those made by Google, Samsung, Huawei, and Xiaomi.
Another scary flaw in the System tracked as CVE-2023-40129 is rated as critical. “The [vulnerability] could lead to remote code execution with no additional execution privileges needed,” Google said.
The update is available for Google’s Pixel and Samsung’s Galaxy series, so if you have an Android device, check your settings ASAP.
Cisco
Software giant Cisco has released patches to fix two already exploited flaws. Tracked as CVE-2023-20198 and with an eye-watering CVSS score of 10, the first is an issue in the web user interface feature of Cisco IOS XE software. It affects physical and virtual devices running Cisco IOS XE software that also have the HTTP or HTTPS Server feature enabled, researchers at Cisco Talos said in a blog.
“Successful exploitation of CVE-2023-20198 allows an attacker to gain privilege level 15 access to the device, which the attacker can then use to create a local user and log in with normal user access,” the researchers warned.
The attacker can use the new unauthorized local user account to exploit a second vulnerability, CVE-2023-20273, in another component of the WebUI feature. “This allows the adversary to inject commands with elevated root privileges, giving them the ability to run arbitrary commands on the device,” said Talos Intelligence, Cisco’s cybersecurity firm.
Cisco “strongly recommends that customers disable the HTTP Server feature on all internet-facing systems or restrict its access to trusted source addresses,” the firm wrote in an advisory.
VMWare
VMWare has patched two out-of-bounds write and information disclosure vulnerabilities in its vCenter Server. Tracked as CVE-2023-34048, the first is a vulnerability in the implementation of the DCERPC protocol that could lead to remote code execution. VMware has rated the flaw as critical with a CVSS base score of 9.8.
At the other end of the CVSS scale but still worth mentioning is CVE-2023-34056, a partial information disclosure bug with a score of 4.3. “A malicious actor with non-administrative privileges to vCenter Server may leverage this issue to access unauthorized data,” VMWare wrote in an advisory.
Citrix
Enterprise software firm Citrix has issued urgent fixes for vulnerabilities in NetScaler ADC (formerly Citrix ADC) and NetScaler Gateway (formerly Citrix Gateway). Tracked as CVE-2023-4966 and with a CVSS score of 9.4, the first bug could allow an attacker to expose sensitive information.
CVE-2023-4967 is a denial of service issue with a CVSS score of 8.2. Exploits of CVE-2023-4966 on unmitigated appliances “have been observed,” Citrix said. “Cloud Software Group strongly urges customers of NetScaler ADC and NetScaler Gateway to install the relevant updated versions of NetScaler ADC and NetScaler Gateway as soon as possible.”
SAP
SAP’s October Security Patch Day saw the release of seven new security notes, all of which were rated as having a medium impact. Tracked as CVE-2023-42474, the worst flaw is a cross-site scripting vulnerability in SAP BusinessObjects Web Intelligence with a CVSS score of 6.8.
With only nine new and updated security notes, SAP’s October Patch Day “belongs to the calmest of the last five years,” security firm Onapsis said.
While SAP’s October flaw count was much smaller than its peers’, attackers are still out there, so you should still keep up to date and get patching as soon as you can.
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A privacy issue was addressed with improved private data redaction for log entries. This issue is fixed in macOS Sonoma 14.1, iOS 17.1 and iPadOS 17.1. An app may be able to access sensitive user data.
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A logic issue was addressed with improved state management. This issue is fixed in macOS Sonoma 14.1. An attacker with knowledge of a standard user's credentials can unlock another standard user's locked screen on the same Mac.
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A logic issue was addressed with improved state management. This issue is fixed in macOS Sonoma 14.1. An attacker with knowledge of a standard user's credentials can unlock another standard user's locked screen on the same Mac.
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A logic issue was addressed with improved state management. This issue is fixed in macOS Sonoma 14.1. An attacker with knowledge of a standard user's credentials can unlock another standard user's locked screen on the same Mac.
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VMware has released security updates to address a critical flaw in the vCenter Server that could result in remote code execution on affected systems. The issue, tracked as CVE-2023-34048 (CVSS score: 9.8), has been described as an out-of-bounds write vulnerability in the implementation of the DCE/RPC protocol. "A malicious actor with network access to vCenter Server may trigger an out-of-bounds
VMware has released security updates to address a critical flaw in the vCenter Server that could result in remote code execution on affected systems. The issue, tracked as CVE-2023-34048 (CVSS score: 9.8), has been described as an out-of-bounds write vulnerability in the implementation of the DCE/RPC protocol. "A malicious actor with network access to vCenter Server may trigger an out-of-bounds
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Cisco has warned of a new zero-day flaw in IOS XE that has been actively exploited by an unknown threat actor to deploy a malicious Lua-based implant on susceptible devices. Tracked as CVE-2023-20273 (CVSS score: 7.2), the issue relates to a privilege escalation flaw in the web UI feature and is said to have been used alongside CVE-2023-20198 as part of an exploit chain. "The attacker first
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Cisco has warned of a critical, unpatched security flaw impacting IOS XE software that’s under active exploitation in the wild. Rooted in the web UI feature, the zero-day vulnerability is assigned as CVE-2023-20198 and has been assigned the maximum severity rating of 10.0 on the CVSS scoring system. It’s worth pointing out that the shortcoming only affects enterprise networking gear that have
By Waqas Another day, another critical vulnerability hits Cisco! This is a post from HackRead.com Read the original post: New Cisco Web UI Vulnerability Exploited by Attackers
No patch or workaround is currently available for the maximum severity flaw, which allows attackers to gain complete administrator privilege on affected devices remotely and without authentication.
Cisco is aware of active exploitation of a previously unknown vulnerability in the web UI feature of Cisco IOS XE Software when exposed to the internet or to untrusted networks. This vulnerability allows a remote, unauthenticated attacker to create an account on an affected system with privilege level 15 access. The attacker can then use that account to gain control of the affected system. For steps to close the attack vector for this vulnerability, see the Recommendations section of this advisory Cisco will provide updates on the status of this investigation and when a software patch is available.
Debian Linux Security Advisory 5526-1 - Multiple security issues were discovered in Chromium, which could result in the execution of arbitrary code, denial of service or information disclosure.
Debian Linux Security Advisory 5526-1 - Multiple security issues were discovered in Chromium, which could result in the execution of arbitrary code, denial of service or information disclosure.
Debian Linux Security Advisory 5526-1 - Multiple security issues were discovered in Chromium, which could result in the execution of arbitrary code, denial of service or information disclosure.
Debian Linux Security Advisory 5526-1 - Multiple security issues were discovered in Chromium, which could result in the execution of arbitrary code, denial of service or information disclosure.
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Two other vulnerabilities that Microsoft is fixing Tuesday — CVE-2023-36563 in Microsoft WordPad and CVE-2023-41763 in the Skype communication platform — have already been publicly exploited in the wild and have proof-of-concept code available.
Two other vulnerabilities that Microsoft is fixing Tuesday — CVE-2023-36563 in Microsoft WordPad and CVE-2023-41763 in the Skype communication platform — have already been publicly exploited in the wild and have proof-of-concept code available.
Two other vulnerabilities that Microsoft is fixing Tuesday — CVE-2023-36563 in Microsoft WordPad and CVE-2023-41763 in the Skype communication platform — have already been publicly exploited in the wild and have proof-of-concept code available.
Microsoft has released its Patch Tuesday updates for October 2023, addressing a total of 103 flaws in its software, two of which have come under active exploitation in the wild. Of the 103 flaws, 13 are rated Critical and 90 are rated Important in severity. This is apart from 18 security vulnerabilities addressed in its Chromium-based Edge browser since the second Tuesday of September. The two
Microsoft has released its Patch Tuesday updates for October 2023, addressing a total of 103 flaws in its software, two of which have come under active exploitation in the wild. Of the 103 flaws, 13 are rated Critical and 90 are rated Important in severity. This is apart from 18 security vulnerabilities addressed in its Chromium-based Edge browser since the second Tuesday of September. The two
Microsoft today issued security updates for more than 100 newly-discovered vulnerabilities in its Windows operating system and related software, including four flaws that are already being exploited. In addition, Apple recently released emergency updates to quash a pair of zero-day bugs in iOS.
Microsoft today issued security updates for more than 100 newly-discovered vulnerabilities in its Windows operating system and related software, including four flaws that are already being exploited. In addition, Apple recently released emergency updates to quash a pair of zero-day bugs in iOS.
Microsoft today issued security updates for more than 100 newly-discovered vulnerabilities in its Windows operating system and related software, including four flaws that are already being exploited. In addition, Apple recently released emergency updates to quash a pair of zero-day bugs in iOS.
October's CVE update is here. Here's which security vulnerabilities to patch now to exorcise your Microsoft systems demons.
October's CVE update is here. Here's which security vulnerabilities to patch now to exorcise your Microsoft systems demons.
October's CVE update is here. Here's which security vulnerabilities to patch now to exorcise your Microsoft systems demons.
Microsoft Message Queuing Remote Code Execution Vulnerability
Microsoft WordPad Information Disclosure Vulnerability
Red Hat Security Advisory 2023-5538-01 - The libvpx packages provide the VP8 SDK, which allows the encoding and decoding of the VP8 video codec, commonly used with the WebM multimedia container file format. Issues addressed include a buffer overflow vulnerability.
Red Hat Security Advisory 2023-5537-01 - The libvpx packages provide the VP8 SDK, which allows the encoding and decoding of the VP8 video codec, commonly used with the WebM multimedia container file format. Issues addressed include a buffer overflow vulnerability.
Sensitive information disclosure in NetScaler ADC and NetScaler Gateway when configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) or AAA ?virtual?server.
Sensitive information disclosure in NetScaler ADC and NetScaler Gateway when configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) or AAA ?virtual?server.
SAP BusinessObjects Web Intelligence - version 420, has a URL with parameter that could be vulnerable to XSS attack. The attacker could send a malicious link to a user that would possibly allow an attacker to retrieve the sensitive information.
An update for libvpx is now available for Red Hat Enterprise Linux 8.6 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2023-5217: A heap-based buffer overflow flaw was found in the way libvpx, a library used to process VP8 and VP9 video codecs data, processes certain specially formatted video data via a crafted HTML page. This flaw allows an attacker to crash or remotely execute arbitrary code in an application, such as a web browser that is compile...
Apple Security Advisory 2023-10-04-1 - iOS 17.0.3 and iPadOS 17.0.3 addresses buffer overflow and code execution vulnerabilities.
Red Hat Security Advisory 2023-5430-01 - Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 115.3.1. Issues addressed include buffer overflow, out of bounds write, and use-after-free vulnerabilities.
Red Hat Security Advisory 2023-5432-01 - Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 115.3.1. Issues addressed include buffer overflow, out of bounds write, and use-after-free vulnerabilities.
Categories: Exploits and vulnerabilities Categories: News Tags: Apple Tags: iOS Tags: iPad Tags: 17.0.3 Tags: CVE-2023-42824 Tags: CVE-2023-5217 Apple has issued an emergency update to patch two vulnerabilities, including an actively exploited one. (Read more...) The post Update now! Apple patches vulnerabilities on iPhone and iPad appeared first on Malwarebytes Labs.
Apple on Wednesday rolled out security patches to address a new zero-day flaw in iOS and iPadOS that it said has come under active exploitation in the wild. Tracked as CVE-2023-42824, the kernel vulnerability could be abused by a local attacker to elevate their privileges. The iPhone maker said it addressed the problem with improved checks. "Apple is aware of a report that this issue may have
The issue was addressed with improved checks. This issue is fixed in iOS 16.7.1 and iPadOS 16.7.1. A local attacker may be able to elevate their privileges. Apple is aware of a report that this issue may have been actively exploited against versions of iOS before iOS 16.6.
The issue was addressed with improved checks. This issue is fixed in iOS 17.0.3 and iPadOS 17.0.3. A local attacker may be able to elevate their privileges. Apple is aware of a report that this issue may have been actively exploited against versions of iOS before iOS 16.6.
An update for firefox is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2023-3600: The Mozilla Foundation Security Advisory describes this flaw as: During the worker lifecycle, a use-after-free condition could have occured, which could have led to a potentially exploitable crash. * CVE-2023-5169: A flaw was found in Mozilla. The Mozilla Foundation Security Advisory describes this flaw as: A compromised content process could hav...
An update for thunderbird is now available for Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2023-3600: The Mozilla Foundation Security Advisory describes this flaw as: During the worker lifecycle, a use-after-free condition could have occured, which could have led to a potentially exploitable crash. * CVE-2023-5169: A flaw was found in Mozilla. The Mozilla Foundation Security Advisory describes this flaw as:...
Categories: Android Categories: News Tags: Google Tags: Android Tags: Qualcomm Tags: webp Tags: ARM Mali Tags: cve-2023-4863 Tags: cve-2023-4211 Tags: cve-2023-33106 Tags: cve-2023-33107 Tags: cve-2023-22071 Tags: cve-2023-33063 Tags: 2023-10-006 Tags: patch level Google has patched 53 vulnerabilities in its Android October security updates, two of which are known to be actively exploited. (Read more...) The post Update your Android devices now! Google patches two actively exploited vulnerabilities appeared first on Malwarebytes Labs.
An update for firefox is now available for Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2023-3600: The Mozilla Foundation Security Advisory describes this flaw as: During the worker lifecycle, a use-after-free condition could have occured, which could have led to a potentially exploitable crash. * CVE-2023-5169: A flaw was found in Mozilla. The Mozilla Foundation Security Advisory describes this flaw as: A c...
Chipmaker Qualcomm has released security updates to address 17 vulnerabilities in various components, while warning that three other zero-days have come under active exploitation. Of the 17 flaws, three are rated Critical, 13 are rated High, and one is rated Medium in severity. "There are indications from Google Threat Analysis Group and Google Project Zero that CVE-2023-33106, CVE-2023-33107,
Arm has released security patches to contain a security flaw in the Mali GPU Kernel Driver that has come under active exploitation in the wild. Tracked as CVE-2023-4211, the shortcoming impacts the following driver versions - Midgard GPU Kernel Driver: All versions from r12p0 - r32p0 Bifrost GPU Kernel Driver: All versions from r0p0 - r42p0 Valhall GPU Kernel Driver: All versions from r19p0 -
Debian Linux Security Advisory 5509-1 - A buffer overflow in VP8 media stream processing has been found in the Mozilla Firefox web browser, which could potentially result in the execution of arbitrary code.
Heap buffer overflow in vp8 encoding in libvpx in Google Chrome prior to 117.0.5938.132 and libvpx 1.13.1 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)
Apple has released yet another round of security patches to address three actively exploited zero-day flaws impacting iOS, iPadOS, macOS, watchOS, and Safari, taking the total tally of zero-day bugs discovered in its software this year to 16. The list of security vulnerabilities is as follows - CVE-2023-41991 - A certificate validation issue in the Security framework that could allow a
Red Hat Security Advisory 2023-5224-01 - Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 102.15.1. Issues addressed include a buffer overflow vulnerability.
Red Hat Security Advisory 2023-5214-01 - The libwebp packages provide a library and tools for the WebP graphics format. WebP is an image format with a lossy compression of digital photographic images. WebP consists of a codec based on the VP8 format, and a container based on the Resource Interchange File Format. Webmasters, web developers and browser developers can use WebP to compress, archive, and distribute digital images more efficiently. Issues addressed include a buffer overflow vulnerability.
An update for firefox is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2023-4863: A heap-based buffer flaw was found in the way libwebp, a library used to process "WebP" image format data, processes certain specially formatted WebP images. An attacker could use this flaw to crash or execute remotely arbitrary code in an application such as a web browser compiled with this library.
An update for firefox is now available for Red Hat Enterprise Linux 8.6 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2023-4863: A heap-based buffer flaw was found in the way libwebp, a library used to process "WebP" image format data, processes certain specially formatted WebP images. An attacker could use this flaw to crash or execute remotely arbitrary code in an application such as a web browser compiled with this library.
An update for libwebp is now available for Red Hat Enterprise Linux 8.6 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2023-4863: A heap-based buffer flaw was found in the way libwebp, a library used to process "WebP" image format data, processes certain specially formatted WebP images. An attacker could use this flaw to crash or execute remotely arbitrary code in an application such as a web browser compiled with this library.
Debian Linux Security Advisory 5498-1 - A buffer overflow in parsing WebP images may result in the execution of arbitrary code.
An update for firefox is now available for Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2023-4863: A heap-based buffer flaw was found in the way libwebp, a library used to process "WebP" image format data, processes certain specially formatted WebP images. An attacker could use this flaw to crash or execute remotely arbitrary code in an application such as a web browser compiled with this library.
Ubuntu Security Notice 6369-1 - It was discovered that libwebp incorrectly handled certain malformed images. If a user or automated system were tricked into opening a specially crafted image file, a remote attacker could use this issue to cause libwebp to crash, resulting in a denial of service, or possibly execute arbitrary code.
Debian Linux Security Advisory 5497-1 - A buffer overflow in parsing WebP images may result in the execution of arbitrary code.