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Google Fixes a Seventh Zero-Day Flaw in Chrome—Update Now

Plus: Major security patches from Microsoft, Mozilla, Atlassian, Cisco, and more.

Wired
#vulnerability#web#android#windows#google#microsoft#cisco#dos#git#rce#samba#samsung#auth#zero_day#chrome#firefox#sap

The holiday season is here, but software firms are still busy issuing fixes for major security flaws. Microsoft, Google, and enterprise software firm Atlassian have released patches for vulnerabilities already being used in attacks. Cisco also patched a bug deemed so serious, it was given a near-maximum CVSS score of 9.9.

Here’s everything you need to know about the patches released in November.

Google Chrome

Google ended November with a bang after issuing seven security fixes for Chrome, including an emergency patch for an issue already being used in real-life attacks. Tracked as CVE-2023-6345, the already exploited flaw is an integer overflow issue in Skia, an open source 2D graphics library. “Google is aware that an exploit for CVE-2023-6345 exists in the wild,” the browser maker said in an advisory.

Little is known about the fix at the time of writing; however, it was reported by Benoît Sevens and Clément Lecigne of Google’s Threat Analysis Group, indicating the exploit could be spyware-related.

The six other flaws fixed by Google and rated as having a high impact include CVE-2023-6348, a type-confusion bug in Spellcheck, and CVE-2023-6351, a use-after-free issue in libavif.

Earlier in the month, Google released fixes for 15 security issues in its widely used browser. Among the bugs fixed by the software giant are three rated as having a high severity. Tracked as CVE-2023-5480, the first is an inappropriate implementation issue in Payments, while the second, CVE-2023-5482, is an insufficient data validation flaw in USB with a CVSS score of 8.8. The third high-severity bug, CVE-2023-5849, is an integer overflow issue in USB.

Mozilla Firefox

Chrome competitor Firefox has fixed 10 vulnerabilities in the browser, six of which are rated as having a high impact. CVE-2023-6204 is an out-of-bound memory access flaw in WebGL2 blitFramebuffer, while CVE-2023-6205 is a use-after-free issue in MessagePort.

Meanwhile, CVE-2023-6206 could allow clickjacking permission prompts using the full-screen transition. “The black fade animation when exiting full screen is roughly the length of the anti-clickjacking delay on permission prompts,” Firefox owner Mozilla said. “It was possible to use this fact to surprise users by luring them to click where the permission grant button would be about to appear.”

CVE-2023-6212 and CVE-2023-6212 are Memory safety bugs, both with a CVSS score of 8.8, in Firefox 120, Firefox ESR 115.5, and Thunderbird 115.5.

Google Android

Google’s November Android Security Bulletin details fixes patched in this month, including eight in the Framework, six of which are elevation of privilege bugs. The worst flaw could lead to local escalation of privilege with no additional execution privileges needed, Google said in an advisory.

Google also fixed seven issues in the System, six of which are rated as having a high severity and one marked as critical. Tracked as CVE-2023-40113, the critical bug could lead to local information disclosure with no additional execution privileges needed.

Google’s Pixel devices have already received the November update, along with some additional fixes. The November Android Security Bulletin has also started to roll out to some of Samsung’s Galaxy line.

Microsoft

Microsoft has a Patch Tuesday every month, but November’s is worth notice. The update fixes 59 vulnerabilities, two of which are already being exploited in real-life attacks. Tracked as CVE-2023-36033, the first is an elevation of privilege vulnerability in Windows DWM Core Library marked as important, with a CVSS score of 7.8. “An attacker who successfully exploited this vulnerability could gain SYSTEM privileges,” Microsoft said.

Meanwhile, CVE-2023-36036 is an elevation of privilege vulnerability in Windows Cloud Files Mini Filter Driver with a CVSS score of 7.8. Also fixed in November’s update cycle is the already exploited libWep flaw previously fixed in Chrome and other browsers, which also impacts Microsoft’s Edge, tracked as CVE-2023-4863.

Another notable flaw is CVE-2023-36397, a remote code execution vulnerability in Windows Pragmatic General Multicast marked as critical with a CVSS score of 9.8. “When Windows message queuing service is running in a PGM Server environment, an attacker could send a specially crafted file over the network to achieve remote code execution and attempt to trigger malicious code,” Microsoft said.

Cisco

Enterprise software firm Cisco has issued fixes for 27 security flaws, including one rated as critical with a near maximum CVSS score of 9.9. Tracked as CVE-2023-20048, the vulnerability in the web services interface of Cisco Firepower Management Center Software could allow an authenticated, remote attacker to execute unauthorized configuration commands on a Firepower Threat Defense device managed by the FMC Software.

However, to successfully exploit the vulnerability, an attacker would need valid credentials on the FMC Software, Cisco said.

A further seven of the flaws fixed by Cisco are rated as having a high impact, including CVE-2023-20086—a denial-of-service flaw with a CVSS score of 8.6—and CVE-2023-20063, a code-injection vulnerability with a CVSS score of 8.2.

Atlassian

Atlassian has released a patch to fix a serious flaw already being used in real-life attacks. Tracked as CVE-2023-22518, the improper-authorization vulnerability issue in Confluence Data Center and Server is being used in ransomware attacks. “As part of Atlassian’s ongoing monitoring and investigation of this CVE, we observed several active exploits and reports of threat actors using ransomware,” it said.

Security outfit Trend Micro reported the Cerber ransomware group is using the flaw in attacks. “This is not the first time that Cerber has targeted Atlassian—in 2021, the malware re-emerged after a period of inactivity and focused on exploiting remote code execution vulnerabilities in Atlassian’s GitLab servers,” Trend Micro said.

All versions of Confluence Data Center and Server are affected by the flaw, which allows an unauthenticated attacker to reset Confluence and create an administrator account. “Using this account, an attacker can perform all administrative actions available to a Confluence instance administrator, leading to a full loss of confidentiality, integrity and availability,” Atlassian said.

SAP

Enterprise software giant SAP has released its November Security Patch Day, fixing three new flaws. Tracked as CVE-2023-31403 and with a CVSS score of 9.6, the most serious issue is an improper access control vulnerability flaw in SAP Business One. As a result of exploiting the issue, a malicious user could read and write to the SMB shared folder, the software giant said.

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An update for libwebp is now available for Red Hat Enterprise Linux 8. 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.

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Red Hat Security Advisory 2023-5222-01 - 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.

RHSA-2023:5236: Red Hat Security Advisory: libwebp: critical security update

An update for libwebp 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 give 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.

RHSA-2023:5187: Red Hat Security Advisory: firefox security update

An update for firefox is now available for Red Hat Enterprise Linux 8.2 Advanced Update Support, Red Hat Enterprise Linux 8.2 Telecommunications Update Service, and Red Hat Enterprise Linux 8.2 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 ...

RHSA-2023:5188: Red Hat Security Advisory: thunderbird security update

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-2023-4863: 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.

RHSA-2023:5185: Red Hat Security Advisory: thunderbird security update

An update for thunderbird is now available for Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.4 Telecommunications Update Service, and Red Hat Enterprise Linux 8.4 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...

Debian Security Advisory 5496-1

Debian Linux Security Advisory 5496-1 - A buffer overflow in parsing WebP images may result in the execution of arbitrary code.

Microsoft Releases Patch for Two New Actively Exploited Zero-Days Flaws

Microsoft has released software fixes to remediate 59 bugs spanning its product portfolio, including two zero-day flaws that have been actively exploited by malicious cyber actors. Of the 59 vulnerabilities, five are rated Critical, 55 are rated Important, and one is rated Moderate in severity. The update is in addition to 35 flaws patched in the Chromium-based Edge browser since last month's

GHSA-j7hp-h8jx-5ppr: libwebp: OOB write in BuildHuffmanTable

Heap buffer overflow in WebP in Google Chrome prior to 116.0.5845.187 allowed a remote attacker to perform an out of bounds memory write via a crafted HTML page. (Chromium security severity: Critical)

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