CVE-2012-4502

Name	CVE-2012-4502
Description	Multiple integer overflows in pktlength.c in Chrony before 1.29 allow remote attackers to cause a denial of service (crash) via a crafted (1) REQ_SUBNETS_ACCESSED or (2) REQ_CLIENT_ACCESSES command request to the PKL_CommandLength function or crafted (3) RPY_SUBNETS_ACCESSED, (4) RPY_CLIENT_ACCESSES, (5) RPY_CLIENT_ACCESSES_BY_INDEX, or (6) RPY_MANUAL_LIST command reply to the PKL_ReplyLength function, which triggers an out-of-bounds read or buffer overflow. NOTE: versions 1.27 and 1.28 do not require authentication to exploit.
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-2760-1
Debian Bugs	719203

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
chrony (PTS)	jessie	1.30-2+deb8u2	fixed
	stretch	3.0-4+deb9u2	fixed
	buster	3.4-4+deb10u2	fixed
	bullseye	4.0-8+deb11u2	fixed
	bookworm	4.3-2+deb12u1	fixed
	sid, trixie	4.6.1-1	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
chrony	source	squeeze	1.24-3+squeeze1		DSA-2760-1
chrony	source	wheezy	1.24-3.1+deb7u2		DSA-2760-1
chrony	source	(unstable)	1.29-1			719203