CVE-2012-4502

NameCVE-2012-4502
DescriptionMultiple 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.
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-2760-1
NVD severitymedium
Debian Bugs719203

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
chrony (PTS)stretch3.0-4+deb9u2fixed
buster3.4-4+deb10u1fixed
bullseye, sid4.0-7fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
chronysourcesqueeze1.24-3+squeeze1DSA-2760-1
chronysourcewheezy1.24-3.1+deb7u2DSA-2760-1
chronysource(unstable)1.29-1719203

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