CVE-2020-27842

NameCVE-2020-27842
DescriptionThere's a flaw in openjpeg's t2 encoder in versions prior to 2.4.0. An attacker who is able to provide crafted input to be processed by openjpeg could cause a null pointer dereference. The highest impact of this flaw is to application availability.
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-4882-1
NVD severitymedium

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
openjpeg2 (PTS)stretch2.1.2-1.1+deb9u4vulnerable
stretch (security)2.1.2-1.1+deb9u6vulnerable
buster, buster (security)2.3.0-2+deb10u2fixed
bookworm, bullseye, sid2.4.0-3fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
openjpeg2sourcebuster2.3.0-2+deb10u2DSA-4882-1
openjpeg2source(unstable)2.4.0-1

Notes

[stretch] - openjpeg2 <no-dsa> (Minor issue)
https://github.com/uclouvain/openjpeg/issues/1294

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