CVE-2012-4502

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.

🔗 References (10)

• secalert@redhathttp://git.tuxfamily.org/chrony/chrony.git/?p=chrony/chrony.git%3Ba=commitdiff%3Bh=7712455d9aa33d0db0945effaa07e900b85987b1
• secalert@redhathttp://permalink.gmane.org/gmane.comp.time.chrony.announce/15
• secalert@redhathttp://seclists.org/oss-sec/2013/q3/332
• secalert@redhathttp://www.debian.org/security/2013/dsa-2760
• secalert@redhathttps://bugzilla.redhat.com/show_bug.cgi?id=846392
• af854a3a-2127-422b-91ae-364da2661108http://git.tuxfamily.org/chrony/chrony.git/?p=chrony/chrony.git%3Ba=commitdiff%3Bh=7712455d9aa33d0db0945effaa07e900b85987b1
• af854a3a-2127-422b-91ae-364da2661108http://permalink.gmane.org/gmane.comp.time.chrony.announce/15
• af854a3a-2127-422b-91ae-364da2661108http://seclists.org/oss-sec/2013/q3/332
• af854a3a-2127-422b-91ae-364da2661108http://www.debian.org/security/2013/dsa-2760
• af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=846392