CVE-2009-4212

NameCVE-2009-4212
DescriptionMultiple integer underflows in the (1) AES and (2) RC4 decryption functionality in the crypto library in MIT Kerberos 5 (aka krb5) 1.3 through 1.6.3, and 1.7 before 1.7.1, allow remote attackers to cause a denial of service (daemon crash) or possibly execute arbitrary code by providing ciphertext with a length that is too short to be valid.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDSA-1969-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
krb5 (PTS)bullseye (security), bullseye1.18.3-6+deb11u5fixed
bookworm, bookworm (security)1.20.1-2+deb12u2fixed
sid, trixie1.21.3-3fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
krb5sourceetch1.4.4-7etch8DSA-1969-1
krb5sourcelenny1.6.dfsg.4~beta1-5lenny2DSA-1969-1
krb5source(unstable)1.8+dfsg~alpha1-1

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