Headline
Apple releases emergency updates for two known-to-be-exploited vulnerabilities
Categories: Apple Categories: Exploits and vulnerabilities Categories: News Tags: iOS 16.4.1
Tags: iPadOS 16.4.1
Tags: macOS 13.3.1
Tags: CVE-2023-28206
Tags: CVE-2023-28205
Tags: use-after-free
Tags: out-of-bounds write
Tags: IOSurfaceAccelerator
Apple has released iOS 16.4.1, iPadOS 16.4.1, and macOS 13.3.1 for the iPhone, iPad, and Mac, respectively, and our advice is to install them as soon as possible.
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The post Apple releases emergency updates for two known-to-be-exploited vulnerabilities appeared first on Malwarebytes Labs.
On Friday April 7, 2023, Apple released iOS 16.4.1, iPadOS 16.4.1, and macOS 13.3.1 for the iPhone, iPad, and Mac, respectively, and our advice is to install them as soon as possible because all three updates include important security fixes.
The Cybersecurity and Infrastructure Security Agency (CISA) has already ordered federal agencies to patch these two security vulnerabilities before May 1st, 2023.
The updates may already have reached you in your regular update routines, but it doesn’t hurt to check if your device is at the latest update level. If a Safari update is available for your device, you can get it by updating or upgrading macOS, iOS, or iPadOS.
How to update your iPhone or iPad.
How to update macOS on Mac.
The vulnerabilities
The security content of iOS 16.4.1 and iPadOS 16.4.1 contains information about two vulnerabilities that Apple has been made aware of reports that these issue may have been actively exploited.
CVE-2023-28206: an out-of-bounds write issue in IOSurfaceAccelerator was addressed with improved input validation. The issue that could allow an app to execute arbitrary code with kernel privileges is fixed in iOS 15.7.5 and iPadOS 15.7.5, macOS Monterey 12.6.5, iOS 16.4.1 and iPadOS 16.4.1, macOS Big Sur 11.7.6, macOS Ventura 13.3.1.
IOSurfaceAccelerator is an object that manages hardware accelerated transfers/scales between IOSurfaces in the IOSurface framework. The IOSurface framework provides a framebuffer object suitable for sharing across process boundaries. It is commonly used to allow applications to move complex image decompression and draw logic into a separate process to enhance security.
An out-of-bounds write can occur when a program writes outside the bounds of an allocated area of memory, potentially leading to a crash or arbitrary code execution. This can happen when the size of the data written is larger than the size of the allocated memory area, when the data is written to an incorrect location within the memory area, or when the program incorrectly calculates the size or location of the data to be written. In this case an attacker can use it to elevate the privileges of a malicious app. For those interested, a proof-of-concept (PoC) has been published for this vulnerability.
CVE-2023-28205: a use after free (UAF) issue was addressed with improved memory management. This issue is fixed in iOS 15.7.5 and iPadOS 15.7.5, Safari 16.4.1, iOS 16.4.1 and iPadOS 16.4.1, macOS Ventura 13.3.1.
UAF is a type of vulnerability that is the result of the incorrect use of dynamic memory during a program’s operation. If, after freeing a memory location, a program does not clear the pointer to that memory, an attacker can use the error to manipulate the program. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. In this case, when the vulnerability is exploited, processing maliciously crafted web content may lead to arbitrary code execution.
WebKit is Apple’s web rendering engine. In other words, WebKit is the browser engine that powers Safari and other apps.
The security content of macOS Ventura 13.3.1 covers the same two vulnerabilities and Apple has also released a new Safari 16.4.1 update for macOS Monterey and macOS Big Sur, which likely addresses the WebKit vulnerability.
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The vulnerability is among a rapidly growing number of zero-day bugs that major browser vendors have reported recently.
Apple on Wednesday released a slew of updates for iOS, iPadOS, macOS, watchOS, and Safari browser to address a set of flaws it said were actively exploited in the wild. This includes a pair of zero-days that have been weaponized in a mobile surveillance campaign called Operation Triangulation that has been active since 2019. The exact threat actor behind the campaign is not known.
Red Hat Security Advisory 2023-2653-01 - WebKitGTK is the port of the portable web rendering engine WebKit to the GTK platform.
Debian Linux Security Advisory 5396-1 - Vulnerabilities have been discovered in the WebKitGTK web engine. Luan Herrera discovered that an HTML document may be able to render iframes with sensitive user information. P1umer and Q1IQ discovered that processing maliciously crafted web content may lead to arbitrary code execution. An anonymous researcher discovered that processing maliciously crafted web content may bypass Same Origin Policy. Clement Lecigne and Donncha O Cearbhaill discovered that processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited.
Red Hat Security Advisory 2023-1918-01 - WebKitGTK is the port of the portable web rendering engine WebKit to the GTK platform. Issues addressed include code execution and use-after-free vulnerabilities.
An update for webkit2gtk3 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-2023-28205: A flaw was found in the webkitgtk package. An improper input validation issue may lead to a use-after-free vulnerability. This vulnerability allows attackers with network access to pass specially crafted web content files, causing Denial of Service or Arbitrary Code Execution.
An update for webkit2gtk3 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-2023-28205: A flaw was found in the webkitgtk package. An improper input validation issue may lead to a use-after-free vulnerability. This vulnerability allows attackers with network access to pass specially crafted web content files, causing Denial of Service or Arbitrary Code Execution.
Microsoft zero-days, dark web forum takedowns and Pentagon leaks on Discord in this week's newsletter.
Microsoft today released software updates to plug 100 security holes in its Windows operating systems and other software, including a zero-day vulnerability that is already being used in active attacks. Not to be outdone, Apple has released a set of important updates addressing two zero-day vulnerabilities that are being used to attack iPhones, iPads and Macs.
Apple Security Advisory 2023-04-10-3 - macOS Big Sur 11.7.6 addresses code execution and out of bounds write vulnerabilities.
Apple Security Advisory 2023-04-10-1 - iOS 15.7.5 and iPadOS 15.7.5 addresses code execution, out of bounds write, and use-after-free vulnerabilities.
Apple Security Advisory 2023-04-10-1 - iOS 15.7.5 and iPadOS 15.7.5 addresses code execution, out of bounds write, and use-after-free vulnerabilities.
Apple Security Advisory 2023-04-10-2 - macOS Monterey 12.6.5 addresses code execution and out of bounds write vulnerabilities.
Apple Security Advisory 2023-04-07-3 - Safari 16.4.1 addresses code execution and use-after-free vulnerabilities.
Apple Security Advisory 2023-04-07-2 - macOS Ventura 13.3.1 addresses code execution, out of bounds write, and use-after-free vulnerabilities.
Apple Security Advisory 2023-04-07-2 - macOS Ventura 13.3.1 addresses code execution, out of bounds write, and use-after-free vulnerabilities.
Apple Security Advisory 2023-04-07-1 - iOS 16.4.1 and iPadOS 16.4.1 addresses code execution, out of bounds write, and use-after-free vulnerabilities.
Apple Security Advisory 2023-04-07-1 - iOS 16.4.1 and iPadOS 16.4.1 addresses code execution, out of bounds write, and use-after-free vulnerabilities.
Unpatched Macs, iPhones, and iPads open to browser takeover and system kernel-level malicious code execution, Apple warns.
A use after free issue was addressed with improved memory management. This issue is fixed in iOS 15.7.5 and iPadOS 15.7.5, Safari 16.4.1, iOS 16.4.1 and iPadOS 16.4.1, macOS Ventura 13.3.1. Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited.
An out-of-bounds write issue was addressed with improved input validation. This issue is fixed in iOS 15.7.5 and iPadOS 15.7.5, macOS Monterey 12.6.5, iOS 16.4.1 and iPadOS 16.4.1, macOS Big Sur 11.7.6, macOS Ventura 13.3.1. An app may be able to execute arbitrary code with kernel privileges. Apple is aware of a report that this issue may have been actively exploited.
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Friday added five security flaws to its Known Exploited Vulnerabilities (KEV) catalog, citing evidence of active exploitation in the wild. This includes three high-severity flaws in the Veritas Backup Exec Agent software (CVE-2021-27876, CVE-2021-27877, and CVE-2021-27878) that could lead to the execution of privileged commands
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Friday added five security flaws to its Known Exploited Vulnerabilities (KEV) catalog, citing evidence of active exploitation in the wild. This includes three high-severity flaws in the Veritas Backup Exec Agent software (CVE-2021-27876, CVE-2021-27877, and CVE-2021-27878) that could lead to the execution of privileged commands
Apple on Friday released security updates for iOS, iPadOS, macOS, and Safari web browser to address a pair of zero-day flaws that are being exploited in the wild. The two vulnerabilities are as follows - CVE-2023-28205 - A use after free issue in WebKit that could lead to arbitrary code execution when processing specially crafted web content. CVE-2023-28206 - An out-of-bounds write issue in
Apple on Friday released security updates for iOS, iPadOS, macOS, and Safari web browser to address a pair of zero-day flaws that are being exploited in the wild. The two vulnerabilities are as follows - CVE-2023-28205 - A use after free issue in WebKit that could lead to arbitrary code execution when processing specially crafted web content. CVE-2023-28206 - An out-of-bounds write issue in