CVE-2021-3781

NameCVE-2021-3781
DescriptionInclude device specifier strings in access validation
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-4972-1
Debian Bugs994011

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
ghostscript (PTS)stretch9.26a~dfsg-0+deb9u6fixed
stretch (security)9.26a~dfsg-0+deb9u7fixed
buster, buster (security)9.27~dfsg-2+deb10u4fixed
bullseye9.53.3~dfsg-7vulnerable
bullseye (security)9.53.3~dfsg-7+deb11u1fixed
bookworm, sid9.54.0~dfsg-5fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
ghostscriptsourcestretch(not affected)
ghostscriptsourcebuster(not affected)
ghostscriptsourcebullseye9.53.3~dfsg-7+deb11u1DSA-4972-1
ghostscriptsource(unstable)9.53.3~dfsg-8994011

Notes

[buster] - ghostscript <not-affected> (Vulnerable code introduced later)
[stretch] - ghostscript <not-affected> (Vulnerable code introduced later)
https://twitter.com/ducnt_/status/1434534373416574983
https://github.com/duc-nt/RCE-0-day-for-GhostScript-9.50
https://bugs.ghostscript.com/show_bug.cgi?id=704342
https://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff;h=a9bd3dec9fde03327a4a2c69dad1036bf9632e20

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