CVE-2018-12396

NameCVE-2018-12396
DescriptionA vulnerability where a WebExtension can run content scripts in disallowed contexts following navigation or other events. This allows for potential privilege escalation by the WebExtension on sites where content scripts should not be run. This vulnerability affects Firefox ESR < 60.3 and Firefox < 63.
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-1571-1, DSA-4324-1
NVD severitymedium (attack range: remote)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
firefox (PTS)sid69.0-1fixed
firefox-esr (PTS)jessie52.8.1esr-1~deb8u1vulnerable
jessie (security)60.9.0esr-1~deb8u1fixed
stretch60.7.1esr-1~deb9u1fixed
stretch (security)60.9.0esr-1~deb9u1fixed
buster60.8.0esr-1~deb10u1fixed
buster (security)60.9.0esr-1~deb10u1fixed
bullseye60.8.0esr-1fixed
sid68.1.0esr-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
firefoxsource(unstable)63.0-1medium
firefox-esrsource(unstable)60.3.0esr-1medium
firefox-esrsourcejessie60.3.0esr-1~deb8u1mediumDLA-1571-1
firefox-esrsourcestretch60.3.0esr-1~deb9u1mediumDSA-4324-1

Notes

https://www.mozilla.org/en-US/security/advisories/mfsa2018-27/#CVE-2018-12396
https://www.mozilla.org/en-US/security/advisories/mfsa2018-26/#CVE-2018-12396

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