CVE-2018-18500

NameCVE-2018-18500
DescriptionA use-after-free vulnerability can occur while parsing an HTML5 stream in concert with custom HTML elements. This results in the stream parser object being freed while still in use, leading to a potentially exploitable crash. This vulnerability affects Thunderbird < 60.5, Firefox ESR < 60.5, and Firefox < 65.
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-1648-1, DLA-1678-1, DSA-4376-1, DSA-4392-1
NVD severityhigh (attack range: remote)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
firefox (PTS)sid68.0.1-2fixed
firefox-esr (PTS)jessie52.8.1esr-1~deb8u1vulnerable
jessie (security)60.7.1esr-1~deb8u1fixed
stretch60.6.1esr-1~deb9u1fixed
stretch (security)60.8.0esr-1~deb9u1fixed
buster60.7.2esr-1fixed
buster (security)60.8.0esr-1~deb10u1fixed
bullseye, sid60.8.0esr-1fixed
thunderbird (PTS)jessie1:52.8.0-1~deb8u1vulnerable
jessie (security)1:60.7.2-1~deb8u1fixed
stretch1:60.6.1-1~deb9u1fixed
stretch (security)1:60.8.0-1~deb9u1fixed
buster1:60.7.2-1fixed
buster (security)1:60.8.0-1~deb10u1fixed
bullseye, sid1:60.8.0-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
firefoxsource(unstable)65.0-1high
firefox-esrsource(unstable)60.5.0esr-1high
firefox-esrsourcejessie60.5.0esr-1~deb8u1highDLA-1648-1
firefox-esrsourcestretch60.5.0esr-1~deb9u1highDSA-4376-1
thunderbirdsource(unstable)1:60.5.0-1high
thunderbirdsourcejessie1:60.5.1-1~deb8u1highDLA-1678-1
thunderbirdsourcestretch1:60.5.1-1~deb9u1highDSA-4392-1

Notes

https://www.mozilla.org/en-US/security/advisories/mfsa2019-01/#CVE-2018-18500
https://www.mozilla.org/en-US/security/advisories/mfsa2019-02/#CVE-2018-18500
https://www.mozilla.org/en-US/security/advisories/mfsa2019-03/#CVE-2018-18500

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