CVE-2012-4502
chrony - several
EPSS 0.84%
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.
How to fix CVE-2012-4502
To remediate CVE-2012-4502, upgrade the affected package to a fixed version below.
- —upgrade to 1.29-1 or later
- —upgrade to 1.24-3+squeeze1 or later
Is CVE-2012-4502 being exploited?
Low — EPSS is 0.8%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 1.29-1
- from 0, < 1.24-3+squeeze1