CVE-2009-0847

NameCVE-2009-0847
DescriptionThe asn1buf_imbed function in the ASN.1 decoder in MIT Kerberos 5 (aka krb5) 1.6.3, when PK-INIT is used, allows remote attackers to cause a denial of service (application crash) via a crafted length value that triggers an erroneous malloc call, related to incorrect calculations with pointer arithmetic.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDSA-1766-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
krb5 (PTS)bullseye1.18.3-6+deb11u5fixed
bullseye (security)1.18.3-6+deb11u7fixed
bookworm1.20.1-2+deb12u4fixed
bookworm (security)1.20.1-2+deb12u2fixed
forky, sid, trixie1.21.3-5fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
krb5sourceetch1.4.4-7etch7DSA-1766-1
krb5sourcelenny1.6.dfsg.4~beta1-5lenny1DSA-1766-1
krb5source(unstable)1.6.dfsg.4~beta1-13

Notes

[etch] - krb5 <not-affected> (Affected code present, but not exploitable before 1.6.3)
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