CVE-2011-0520

NameCVE-2011-0520
DescriptionThe compress_add_dlabel_points function in dns/Compress.c in MaraDNS 1.4.03, 1.4.05, and probably other versions allows remote attackers to cause a denial of service (segmentation fault) and possibly execute arbitrary code via a long DNS hostname with a large number of labels, which triggers a heap-based buffer overflow.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDSA-2196-1
Debian Bugs610834

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
maradns (PTS)stretch2.0.13-1.2fixed
buster (security), buster, buster (lts)2.0.13-1.2+deb10u1fixed
bullseye (security), bullseye2.0.13-1.4+deb11u1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
maradnssourcelenny1.3.07.09-2.1DSA-2196-1
maradnssource(unstable)1.4.03-1.1610834
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