CVE-2017-7843

NameCVE-2017-7843
DescriptionWhen Private Browsing mode is used, it is possible for a web worker to write persistent data to IndexedDB and fingerprint a user uniquely. IndexedDB should not be available in Private Browsing mode and this stored data will persist across multiple private browsing mode sessions because it is not cleared when exiting. This vulnerability affects Firefox ESR < 52.5.2 and Firefox < 57.0.1.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDLA-1202-1, DSA-4062-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
firefox (PTS)sid133.0.3-1fixed
firefox-esr (PTS)jessie, jessie (lts)68.9.0esr-1~deb8u2fixed
stretch (security), stretch (lts), stretch91.11.0esr-1~deb9u1fixed
buster (security), buster, buster (lts)115.12.0esr-1~deb10u1fixed
bullseye115.14.0esr-1~deb11u1fixed
bullseye (security)128.5.0esr-1~deb11u1fixed
bookworm128.3.1esr-1~deb12u1fixed
bookworm (security)128.5.0esr-1~deb12u1fixed
trixie128.5.0esr-1fixed
sid128.5.1esr-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
firefoxsource(unstable)57.0.1-1
firefox-esrsourcewheezy52.5.2esr-1~deb7u1DLA-1202-1
firefox-esrsourcejessie52.5.2esr-1~deb8u1DSA-4062-1
firefox-esrsourcestretch52.5.2esr-1~deb9u1DSA-4062-1
firefox-esrsource(unstable)52.5.2esr-1

Notes

https://www.mozilla.org/en-US/security/advisories/mfsa2017-27/#CVE-2017-7843
https://www.mozilla.org/en-US/security/advisories/mfsa2017-28/#CVE-2017-7843
https://bugzilla.mozilla.org/show_bug.cgi?id=1410106

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