CVE-2018-12395

NameCVE-2018-12395
DescriptionBy rewriting the Host: request headers using the webRequest API, a WebExtension can bypass domain restrictions through domain fronting. This would allow access to domains that share a host that are otherwise restricted. 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-2018-12395
https://www.mozilla.org/en-US/security/advisories/mfsa2018-26/#CVE-2018-12395

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