CVE-2011-4869

NameCVE-2011-4869
Descriptionvalidator/val_nsec3.c in Unbound before 1.4.13p2 does not properly perform proof processing for NSEC3-signed zones, which allows remote DNS servers to cause a denial of service (daemon crash) via a malformed response that lacks expected NSEC3 records, a different vulnerability than CVE-2011-4528.
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-2370-1
NVD severityhigh (attack range: remote)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
unbound (PTS)jessie1.4.22-3+deb8u3fixed
stretch1.6.0-3+deb9u1fixed
buster1.7.3-1fixed
sid1.8.0-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
unboundsource(unstable)1.4.14-1medium
unboundsourcelenny1.4.6-1~lenny2highDSA-2370-1
unboundsourcesqueeze1.4.6-1+squeeze2highDSA-2370-1

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