CVE-2020-15678

NameCVE-2020-15678
DescriptionWhen recursing through graphical layers while scrolling, an iterator may have become invalid, resulting in a potential use-after-free. This occurs because the function APZCTreeManager::ComputeClippedCompositionBounds did not follow iterator invalidation rules. This vulnerability affects Firefox < 81, Thunderbird < 78.3, and Firefox ESR < 78.3.
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)
ReferencesDLA-2387-1, DLA-2408-1, DSA-4768-1, DSA-4770-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
firefox (PTS)sid100.0.2-1fixed
firefox-esr (PTS)stretch68.10.0esr-1~deb9u1vulnerable
stretch (security)91.9.1esr-1~deb9u1fixed
buster78.14.0esr-1~deb10u1fixed
buster (security)91.9.1esr-1~deb10u1fixed
bullseye78.15.0esr-1~deb11u1fixed
bullseye (security)91.9.1esr-1~deb11u1fixed
bookworm91.9.0esr-1fixed
sid91.9.1esr-1fixed
thunderbird (PTS)stretch1:68.10.0-1~deb9u1vulnerable
stretch (security)1:91.9.0-1~deb9u1fixed
buster1:78.14.0-1~deb10u1fixed
buster (security)1:91.9.0-1~deb10u1fixed
bullseye1:78.14.0-1~deb11u1fixed
bullseye (security)1:91.9.0-1~deb11u1fixed
bookworm, sid1:91.9.0-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
firefoxsource(unstable)81.0-1
firefox-esrsourcestretch78.3.0esr-1~deb9u1DLA-2387-1
firefox-esrsourcebuster78.3.0esr-1~deb10u1DSA-4768-1
firefox-esrsource(unstable)78.3.0esr-1
thunderbirdsourcestretch1:78.3.1-2~deb9u1DLA-2408-1
thunderbirdsourcebuster1:78.3.1-2~deb10u2DSA-4770-1
thunderbirdsource(unstable)1:78.3.1-1

Notes

https://www.mozilla.org/en-US/security/advisories/mfsa2020-42/#CVE-2020-15678
https://www.mozilla.org/en-US/security/advisories/mfsa2020-43/#CVE-2020-15678
https://www.mozilla.org/en-US/security/advisories/mfsa2020-44/#CVE-2020-15678

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