CVE-2023-6206

NameCVE-2023-6206
DescriptionThe black fade animation when exiting fullscreen is roughly the length of the anti-clickjacking delay on permission prompts. It was possible to use this fact to surprise users by luring them to click where the permission grant button would be about to appear. This vulnerability affects Firefox < 120, Firefox ESR < 115.5.0, and Thunderbird < 115.5.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDLA-3661-1, DLA-3674-1, DSA-5561-1, DSA-5566-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
firefox (PTS)sid132.0.2-1fixed
firefox-esr (PTS)jessie, jessie (lts)68.9.0esr-1~deb8u2vulnerable
stretch (security), stretch (lts), stretch91.11.0esr-1~deb9u1vulnerable
buster (security), buster, buster (lts)115.12.0esr-1~deb10u1fixed
bullseye115.14.0esr-1~deb11u1fixed
bullseye (security)128.4.0esr-1~deb11u1fixed
bookworm128.3.1esr-1~deb12u1fixed
bookworm (security)128.4.0esr-1~deb12u1fixed
trixie128.3.1esr-2fixed
sid128.4.0esr-1fixed
thunderbird (PTS)jessie, jessie (lts)1:68.9.0-1~deb8u2vulnerable
stretch (security), stretch (lts), stretch1:91.10.0-1~deb9u1vulnerable
buster (security), buster, buster (lts)1:115.12.0-1~deb10u1fixed
bullseye1:115.12.0-1~deb11u1fixed
bullseye (security)1:128.4.0esr-1~deb11u1fixed
bookworm1:115.16.0esr-1~deb12u1fixed
bookworm (security)1:128.4.0esr-1~deb12u1fixed
trixie1:128.4.2esr-1fixed
sid1:128.4.3esr-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
firefoxsource(unstable)120.0-1
firefox-esrsourcejessie(unfixed)end-of-life
firefox-esrsourcestretch(unfixed)end-of-life
firefox-esrsourcebuster115.5.0esr-1~deb10u1DLA-3661-1
firefox-esrsourcebullseye115.5.0esr-1~deb11u1DSA-5561-1
firefox-esrsourcebookworm115.5.0esr-1~deb12u1DSA-5561-1
firefox-esrsource(unstable)115.5.0esr-1
thunderbirdsourcejessie(unfixed)end-of-life
thunderbirdsourcestretch(unfixed)end-of-life
thunderbirdsourcebuster1:115.5.0-1~deb10u1DLA-3674-1
thunderbirdsourcebullseye1:115.5.0-1~deb11u1DSA-5566-1
thunderbirdsourcebookworm1:115.5.0-1~deb12u1DSA-5566-1
thunderbirdsource(unstable)1:115.5.0-1

Notes

https://www.mozilla.org/en-US/security/advisories/mfsa2023-49/#CVE-2023-6206
https://www.mozilla.org/en-US/security/advisories/mfsa2023-50/#CVE-2023-6206
https://www.mozilla.org/en-US/security/advisories/mfsa2023-52/#CVE-2023-6206

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