CVE-2009-0845

Name	CVE-2009-0845
Description	The spnego_gss_accept_sec_context function in lib/gssapi/spnego/spnego_mech.c in MIT Kerberos 5 (aka krb5) 1.5 through 1.6.3, when SPNEGO is used, allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via invalid ContextFlags data in the reqFlags field in a negTokenInit token.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DSA-1766-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
krb5 (PTS)	bullseye (security), bullseye	1.18.3-6+deb11u5	fixed
	bookworm, bookworm (security)	1.20.1-2+deb12u2	fixed
	sid, trixie	1.21.3-3	fixed

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

Package	Type	Release	Fixed Version	Origin
krb5	source	etch	1.4.4-7etch7	DSA-1766-1
krb5	source	lenny	1.6.dfsg.4~beta1-5lenny1	DSA-1766-1
krb5	source	(unstable)	1.6.dfsg.4~beta1-13

[etch] - krb5 <not-affected> (Vulnerable code was introduced in 1.5)