CVE-2020-15656

NameCVE-2020-15656
DescriptionJIT optimizations involving the Javascript arguments object could confuse later optimizations. This risk was already mitigated by various precautions in the code, resulting in this bug rated at only moderate severity. This vulnerability affects Firefox ESR < 78.1, Firefox < 79, and Thunderbird < 78.1.
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)
NVD severityhigh

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
firefox (PTS)sid82.0-1fixed
thunderbird (PTS)stretch1:68.10.0-1~deb9u1fixed
stretch (security)1:78.3.1-2~deb9u1fixed
buster1:68.12.0-1~deb10u1fixed
buster (security)1:78.3.1-2~deb10u2fixed
bullseye1:68.12.0-1fixed
sid1:78.3.3-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
firefoxsource(unstable)79.0-1
thunderbirdsource(unstable)(not affected)

Notes

- thunderbird <not-affected> (Only affects Thunderbird 78.x)
https://www.mozilla.org/en-US/security/advisories/mfsa2020-32/#CVE-2020-15656
https://www.mozilla.org/en-US/security/advisories/mfsa2020-33/#CVE-2020-15656

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