CVE-2018-12387

NameCVE-2018-12387
DescriptionA vulnerability where the JavaScript JIT compiler inlines Array.prototype.push with multiple arguments that results in the stack pointer being off by 8 bytes after a bailout. This leaks a memory address to the calling function which can be used as part of an exploit inside the sandboxed content process. This vulnerability affects Firefox ESR < 60.2.2 and Firefox < 62.0.3.
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)
ReferencesDSA-4310-1
NVD severitymedium (attack range: remote)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
firefox (PTS)sid64.0-1fixed
firefox-esr (PTS)jessie52.8.1esr-1~deb8u1vulnerable
jessie (security)60.4.0esr-1~deb8u1fixed
stretch60.3.0esr-1~deb9u1fixed
stretch (security)60.4.0esr-1~deb9u1fixed
buster60.3.0esr-1fixed
sid60.4.0esr-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
firefoxsource(unstable)62.0.3-1medium
firefox-esrsource(unstable)60.2.2esr-1medium
firefox-esrsourcestretch60.2.2esr-1~deb9u1mediumDSA-4310-1

Notes

https://www.mozilla.org/en-US/security/advisories/mfsa2018-24/#CVE-2018-12387

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