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                                CERT-Renater

                      Note d'Information No. 2023/VULN364

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DATE                : 29/09/2023

HARDWARE PLATFORM(S): /

OPERATING SYSTEM(S): Systems running WebKitGTK, WebKit versions prior
                                   to 2.42.1, 2.40.5.

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https://webkitgtk.org/security/WSA-2023-0009.html
https://wpewebkit.org/security/WSA-2023-0009.html
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WebKitGTK and WPE WebKit Security Advisory                 WSA-2023-0009
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Date reported           : September 28, 2023
Advisory ID             : WSA-2023-0009
WebKitGTK Advisory URL  : https://webkitgtk.org/security/WSA-2023-0009.html
WPE WebKit Advisory URL : https://wpewebkit.org/security/WSA-2023-0009.html
CVE identifiers         : CVE-2023-39928, CVE-2023-35074,
                           CVE-2023-39434, CVE-2023-40451,
                           CVE-2023-41074, CVE-2023-41993.

Several vulnerabilities were discovered in WebKitGTK and WPE WebKit.

CVE-2023-39928
     Versions affected: WebKitGTK and WPE WebKit before 2.42.0.
     Credit to Marcin 'Icewall' Noga of Cisco Talos.
     A use-after-free vulnerability exists in the MediaRecorder API of
     the WebKit GStreamer-based ports (WebKitGTK and WPE WebKit). A
     specially crafted web page can abuse this vulnerability to cause
     memory corruption and potentially arbitrary code execution. A 
user would need to to visit a malicious webpage to trigger this
     vulnerability. WebKit Bugzilla: 260649.

CVE-2023-35074
     Versions affected: WebKitGTK and WPE WebKit before 2.40.0.
     Credit to Abysslab Dong Jun Kim(@smlijun) and Jong Seong
     Kim(@nevul37).
     Impact: Processing web content may lead to arbitrary code
     execution.
     Description: The issue was addressed with improved memory
     handling.

CVE-2023-39434
     Versions affected: WebKitGTK and WPE WebKit before 2.40.5.
     Credit to Francisco Alonso (@revskills), and Dohyun Lee
      (@l33d0hyun) of PK Security.
     Impact: Processing web content may lead to arbitrary code
     execution.
     Description: A use-after-free issue was addressed with improved
     memory management.

CVE-2023-40451
     Versions affected: WebKitGTK and WPE WebKit before 2.40.5.
     Credit to an anonymous researcher.
     Impact: An attacker with JavaScript execution may be able to
     execute arbitrary code. Description: This issue was addressed with
     improved iframe sandbox enforcement.

CVE-2023-41074
     Versions affected: WebKitGTK and WPE WebKit before 2.42.0.
     Credit to 이준성(Junsung Lee) of Cross Republic and me Li.
     Impact: Processing web content may lead to arbitrary code
     execution.
     Description: The issue was addressed with improved checks.

CVE-2023-41993
     Versions affected: WebKitGTK and WPE WebKit before 2.42.1.
     Credit to Bill Marczak of The Citizen Lab at The University of
     Toronto's Munk School and Maddie Stone of Google's Threat Analysis
     Group.
     Impact: Processing web content may lead to arbitrary code
     execution.
     Apple is aware of a report that this issue may have been actively
     exploited. Description: The issue was addressed with improved
     checks.


We recommend updating to the latest stable versions of WebKitGTK and
WPE WebKit. It is the best way to ensure that you are running safe
versions of WebKit. Please check our websites for information about
the latest stable releases.

Further information about WebKitGTK and WPE WebKit security
advisories can be found at: https://webkitgtk.org/security.html
or https://wpewebkit.org/security/.

The WebKitGTK and WPE WebKit team,
September 28, 2023


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