CVE-2020-35112

NameCVE-2020-35112
DescriptionIf a user downloaded a file lacking an extension on Windows, and then "Open"-ed it from the downloads panel, if there was an executable file in the downloads directory with the same name but with an executable extension (such as .bat or .exe) that executable would have been launched instead. *Note: This issue only affected Windows operating systems. Other operating systems are unaffected.*. This vulnerability affects Firefox < 84, Thunderbird < 78.6, and Firefox ESR < 78.6.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
firefox (PTS)sid126.0-1fixed
firefox-esr (PTS)jessie, jessie (lts)68.9.0esr-1~deb8u2fixed
stretch (security), stretch (lts), stretch91.11.0esr-1~deb9u1fixed
buster91.12.0esr-1~deb10u1fixed
buster (security)115.11.0esr-1~deb10u1fixed
bullseye115.7.0esr-1~deb11u1fixed
bullseye (security)115.11.0esr-1~deb11u1fixed
bookworm115.7.0esr-1~deb12u1fixed
bookworm (security)115.11.0esr-1~deb12u1fixed
sid, trixie115.11.0esr-1fixed
thunderbird (PTS)jessie, jessie (lts)1:68.9.0-1~deb8u2fixed
stretch (security), stretch (lts), stretch1:91.10.0-1~deb9u1fixed
buster1:91.12.0-1~deb10u1fixed
buster (security)1:115.11.0-1~deb10u1fixed
bullseye1:115.7.0-1~deb11u1fixed
bullseye (security)1:115.11.0-1~deb11u1fixed
bookworm1:115.7.0-1~deb12u1fixed
bookworm (security)1:115.11.0-1~deb12u1fixed
trixie1:115.10.1-1fixed
sid1:115.11.0-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
firefoxsource(unstable)(not affected)
firefox-esrsource(unstable)(not affected)
thunderbirdsource(unstable)(not affected)

Notes

- firefox <not-affected> (Only affects Windows)
- firefox-esr <not-affected> (Only affects Windows)
- thunderbird <not-affected> (only affects Windows)
https://www.mozilla.org/en-US/security/advisories/mfsa2020-54/#CVE-2020-35112
https://www.mozilla.org/en-US/security/advisories/mfsa2020-55/#CVE-2020-35112
https://www.mozilla.org/en-US/security/advisories/mfsa2020-56/#CVE-2020-35112

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