CVE-2018-18073

NameCVE-2018-18073
DescriptionArtifex Ghostscript allows attackers to bypass a sandbox protection mechanism by leveraging exposure of system operators in the saved execution stack in an error object.
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-1552-1, DSA-4336-1
NVD severitymedium (attack range: remote)
Debian Bugs910758

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
ghostscript (PTS)jessie9.06~dfsg-2+deb8u7vulnerable
jessie (security)9.26a~dfsg-0+deb8u3fixed
stretch9.26a~dfsg-0+deb9u2fixed
stretch (security)9.26a~dfsg-0+deb9u3fixed
buster9.27~dfsg-1fixed
sid9.27~dfsg-2fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
ghostscriptsource(unstable)9.25~dfsg-3medium910758
ghostscriptsourcejessie9.06~dfsg-2+deb8u11mediumDLA-1552-1
ghostscriptsourcestretch9.25~dfsg-0+deb9u1mediumDSA-4336-1

Notes

https://bugs.chromium.org/p/project-zero/issues/detail?id=1690
https://bugs.ghostscript.com/show_bug.cgi?id=699927
http://git.ghostscript.com/?p=ghostpdl.git;a=commit;h=34cc326eb2c5695833361887fe0b32e8d987741c
https://www.openwall.com/lists/oss-security/2018/10/10/12

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