CVE-2020-27818

NameCVE-2020-27818
DescriptionA flaw was found in the check_chunk_name() function of pngcheck-2.4.0. An attacker able to pass a malicious file to be processed by pngcheck could cause a temporary denial of service, posing a low risk to application availability.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub advisories/code/issues, web search, more)
ReferencesDLA-3032-1
Debian Bugs976350

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
pngcheck (PTS)buster2.3.0-7+deb10u1fixed
bullseye2.3.0-13fixed
bookworm, sid3.0.2-2fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
pngchecksourcestretch2.3.0-7+deb9u1DLA-3032-1
pngchecksourcebuster2.3.0-7+deb10u1
pngchecksource(unstable)2.3.0-13976350

Notes

https://bugzilla.redhat.com/show_bug.cgi?id=1902011
Patch applied in Fedora: https://src.fedoraproject.org/rpms/pngcheck/blob/cc48791e34201caf7b686084b735d06cef66c974/f/pngcheck-2.4.0-overflow-bz1897485.patch

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