WebKitGTK and WPE WebKit Security Advisory WSA-2021-0003

[Carlos Alberto Lopez Perez <clopez igalia com>]

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WebKitGTK and WPE WebKit Security Advisory                 WSA-2021-0003
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Date reported           : March 29, 2021
Advisory ID             : WSA-2021-0003
WebKitGTK Advisory URL  : https://webkitgtk.org/security/WSA-2021-0003.html
WPE WebKit Advisory URL : https://wpewebkit.org/security/WSA-2021-0003.html
CVE identifiers         : CVE-2021-1788, CVE-2021-1844, CVE-2021-1871.

Several vulnerabilities were discovered in WebKitGTK and WPE WebKit.

CVE-2021-1788
    Versions affected: WebKitGTK before 2.32.0 and WPE WebKit before 2.32.0.
    Credit to Francisco Alonso (@revskills).
    Impact: Processing maliciously crafted web content may lead to
    arbitrary code execution. Description: A use after free issue was
    addressed with improved memory management.

CVE-2021-1844
    Versions affected: WebKitGTK before 2.32.0 and WPE WebKit before 2.32.0.
    Credit to Clément Lecigne of Google’s Threat Analysis Group, Alison
    Huffman of Microsoft Browser Vulnerability Research.
    Impact: Processing maliciously crafted web content may lead to
    arbitrary code execution. Description: A memory corruption issue was
    addressed with improved validation.

CVE-2021-1871
    Versions affected: WebKitGTK before 2.32.0 and WPE WebKit before 2.32.0.
    Credit to an anonymous researcher.
    Impact: A remote attacker may be able to cause arbitrary code
    execution. Apple is aware of a report that this issue may have been
    actively exploited. Description: A logic issue was addressed with
    improved restrictions.


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,
March 29, 2021