A webkit2gtk security update has been released for Arch Linux.

ASA-202107-67: webkit2gtk: multiple issues

Arch Linux Security Advisory ASA-202107-67
=========================================
Severity: High
Date : 2021-07-27
CVE-ID : CVE-2021-21775 CVE-2021-21779 CVE-2021-30663 CVE-2021-30665
CVE-2021-30689 CVE-2021-30720 CVE-2021-30734 CVE-2021-30744
CVE-2021-30749 CVE-2021-30795 CVE-2021-30797 CVE-2021-30799
Package : webkit2gtk
Type : multiple issues
Remote : Yes
Link :   https://security.archlinux.org/AVG-2220

Summary
======
The package webkit2gtk before version 2.32.3-1 is vulnerable to
multiple issues including arbitrary code execution, access restriction
bypass, cross-site scripting and information disclosure.

Resolution
=========
Upgrade to 2.32.3-1.

# pacman -Syu "webkit2gtk>=2.32.3-1"

The problems have been fixed upstream in version 2.32.3.

Workaround
=========
None.

Description
==========
- CVE-2021-21775 (information disclosure)

A security issue has been found in WebKitGTK and WPE WebKit before
2.32.3. A use-after-free vulnerability exists in the way certain events
are processed for ImageLoader objects of WebKit. A specially crafted
web page can lead to a potential information leak and further memory
corruption. In order to trigger the vulnerability, a victim must be
tricked into visiting a malicious webpage.

- CVE-2021-21779 (information disclosure)

A security issue has been found in WebKitGTK and WPE WebKit before
2.32.3. A use-after-free vulnerability exists in the way that WebKit
GraphicsContext handles certain events. A specially crafted web page
can lead to a potential information leak and further memory corruption.
A victim must be tricked into visiting a malicious web page to trigger
this vulnerability.

- CVE-2021-30663 (arbitrary code execution)

A security issue has been found in WebKitGTK and WPE WebKit before
2.32.3. Processing maliciously crafted web content may lead to
arbitrary code execution.

- CVE-2021-30665 (arbitrary code execution)

A security issue has been found in WebKitGTK and WPE WebKit before
2.32.3. 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.

- CVE-2021-30689 (cross-site scripting)

A security issue has been found in WebKitGTK and WPE WebKit before
2.32.3. Processing maliciously crafted web content may lead to
universal cross site scripting.

- CVE-2021-30720 (access restriction bypass)

A security issue has been found in WebKitGTK and WPE WebKit before
2.32.3. A malicious website may be able to access restricted ports on
arbitrary servers.

- CVE-2021-30734 (arbitrary code execution)

A security issue has been found in WebKitGTK and WPE WebKit before
2.32.3. Processing maliciously crafted web content may lead to
arbitrary code execution.

- CVE-2021-30744 (cross-site scripting)

A security issue has been found in WebKitGTK and WPE WebKit before
2.32.3. Processing maliciously crafted web content may lead to
universal cross site scripting.

- CVE-2021-30749 (arbitrary code execution)

A security issue has been found in WebKitGTK and WPE WebKit before
2.32.3. Processing maliciously crafted web content may lead to
arbitrary code execution.

- CVE-2021-30795 (arbitrary code execution)

A security issue has been found in WebKitGTK and WPE WebKit before
2.32.3. Processing maliciously crafted web content may lead to
arbitrary code execution.

- CVE-2021-30797 (arbitrary code execution)

A security issue has been found in WebKitGTK and WPE WebKit before
2.32.3. Processing maliciously crafted web content may lead to code
execution.

- CVE-2021-30799 (arbitrary code execution)

A security issue has been found in WebKitGTK and WPE WebKit before
2.32.3. Processing maliciously crafted web content may lead to
arbitrary code execution.

Impact
=====
A remote attacker could execute arbitrary code or disclose sensitive
information through crafted web content. Apple is aware of a report
that one of the arbitrary code execution issues may have been actively
exploited.

References
=========
  https://webkitgtk.org/security/WSA-2021-0004.html#CVE-2021-21775
  https://talosintelligence.com/vulnerability_reports/TALOS-2021-1229
  https://webkitgtk.org/security/WSA-2021-0004.html#CVE-2021-21779
  https://talosintelligence.com/vulnerability_reports/TALOS-2021-1238
  https://webkitgtk.org/security/WSA-2021-0004.html#CVE-2021-30663
  https://webkitgtk.org/security/WSA-2021-0004.html#CVE-2021-30665
  https://webkitgtk.org/security/WSA-2021-0004.html#CVE-2021-30689
  https://webkitgtk.org/security/WSA-2021-0004.html#CVE-2021-30720
  https://webkitgtk.org/security/WSA-2021-0004.html#CVE-2021-30734
  https://webkitgtk.org/security/WSA-2021-0004.html#CVE-2021-30744
  https://webkitgtk.org/security/WSA-2021-0004.html#CVE-2021-30749
  https://webkitgtk.org/security/WSA-2021-0004.html#CVE-2021-30795
  https://webkitgtk.org/security/WSA-2021-0004.html#CVE-2021-30797
  https://webkitgtk.org/security/WSA-2021-0004.html#CVE-2021-30799
  https://security.archlinux.org/CVE-2021-21775
  https://security.archlinux.org/CVE-2021-21779
  https://security.archlinux.org/CVE-2021-30663
  https://security.archlinux.org/CVE-2021-30665
  https://security.archlinux.org/CVE-2021-30689
  https://security.archlinux.org/CVE-2021-30720
  https://security.archlinux.org/CVE-2021-30734
  https://security.archlinux.org/CVE-2021-30744
  https://security.archlinux.org/CVE-2021-30749
  https://security.archlinux.org/CVE-2021-30795
  https://security.archlinux.org/CVE-2021-30797
  https://security.archlinux.org/CVE-2021-30799