CVE-2018-18505

NameCVE-2018-18505
DescriptionAn earlier fix for an Inter-process Communication (IPC) vulnerability, CVE-2011-3079, added authentication to communication between IPC endpoints and server parents during IPC process creation. This authentication is insufficient for channels created after the IPC process is started, leading to the authentication not being correctly applied to later channels. This could allow for a sandbox escape through IPC channels due to lack of message validation in the listener process. 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)sid65.0.1-1fixed
firefox-esr (PTS)jessie52.8.1esr-1~deb8u1vulnerable
jessie (security)60.5.1esr-1~deb8u1fixed
stretch60.5.0esr-1~deb9u1fixed
stretch (security)60.5.1esr-1~deb9u1fixed
buster60.5.0esr-1fixed
sid60.5.1esr-1fixed
thunderbird (PTS)jessie1:52.8.0-1~deb8u1vulnerable
jessie (security)1:60.5.1-1~deb8u1fixed
stretch1:60.4.0-1~deb9u1vulnerable
stretch (security)1:60.5.1-1~deb9u1fixed
buster1:60.5.0-3fixed
sid1:60.5.1-1fixed

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-2018-18505
https://www.mozilla.org/en-US/security/advisories/mfsa2019-02/#CVE-2018-18505
https://www.mozilla.org/en-US/security/advisories/mfsa2019-03/#CVE-2018-18505

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