CVE-2021-21806

NameCVE-2021-21806
DescriptionAn exploitable use-after-free vulnerability exists in WebKitGTK browser version 2.30.3 x64. A specially crafted HTML web page can cause a use-after-free condition, resulting in remote code execution. The victim needs to visit a malicious web site to trigger the vulnerability.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
ReferencesDSA-4877-1
NVD severitymedium

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
webkit2gtk (PTS)stretch2.18.6-1~deb9u1vulnerable
buster2.32.4-1~deb10u1fixed
buster (security)2.34.1-1~deb10u1fixed
bullseye2.32.4-1~deb11u1fixed
bullseye (security)2.34.1-1~deb11u1fixed
bookworm, sid2.34.2-1fixed
wpewebkit (PTS)bullseye2.32.4-1~deb11u1fixed
bullseye (security)2.34.1-1~deb11u1fixed
bookworm, sid2.34.2-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
webkit2gtksourcebuster2.30.6-1~deb10u1DSA-4877-1
webkit2gtksource(unstable)2.30.6-1
wpewebkitsource(unstable)2.30.6-1

Notes

[stretch] - webkit2gtk <ignored> (Not covered by security support in stretch)
https://talosintelligence.com/vulnerability_reports/TALOS-2020-1214

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