CVE-2020-35111

NameCVE-2020-35111
DescriptionWhen an extension with the proxy permission registered to receive <all_urls>, the proxy.onRequest callback was not triggered for view-source URLs. While web content cannot navigate to such URLs, a user opening View Source could have inadvertently leaked their IP address. This vulnerability affects Firefox < 84, Thunderbird < 78.6, and Firefox ESR < 78.6.
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-2496-1, DLA-2497-1, DSA-4813-1, DSA-4815-1
NVD severitymedium

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
firefox (PTS)sid84.0.2-1fixed
firefox-esr (PTS)stretch68.10.0esr-1~deb9u1vulnerable
stretch (security)78.6.1esr-1~deb9u1fixed
buster78.5.0esr-1~deb10u1vulnerable
buster (security)78.6.1esr-1~deb10u1fixed
bullseye, sid78.6.1esr-1fixed
thunderbird (PTS)stretch1:68.10.0-1~deb9u1vulnerable
stretch (security)1:78.6.0-1~deb9u1fixed
buster1:78.5.0-1~deb10u1vulnerable
buster (security)1:78.6.0-1~deb10u1fixed
bullseye1:78.6.0-1fixed
sid1:78.6.1-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
firefoxsource(unstable)84.0-1
firefox-esrsourcestretch78.6.0esr-1~deb9u1DLA-2496-1
firefox-esrsourcebuster78.6.0esr-1~deb10u1DSA-4813-1
firefox-esrsource(unstable)78.6.0esr-1
thunderbirdsourcestretch1:78.6.0-1~deb9u1DLA-2497-1
thunderbirdsourcebuster1:78.6.0-1~deb10u1DSA-4815-1
thunderbirdsource(unstable)1:78.6.0-1

Notes

https://www.mozilla.org/en-US/security/advisories/mfsa2020-54/#CVE-2020-35111
https://www.mozilla.org/en-US/security/advisories/mfsa2020-55/#CVE-2020-35111
https://www.mozilla.org/en-US/security/advisories/mfsa2020-56/#CVE-2020-35111

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