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…
Does this matter?
Lower severity and a low EPSS score (3.24%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 2.0
- 5.0 MEDIUMAV:N/AC:L/Au:N/C:N/I:N/A:P
- EPSS
- 3.24% probability · 88th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-189
- Affected
- tuxfamily/chrony
- Source
- secalert@redhat.com
References
- http://git.tuxfamily.org/chrony/chrony.git/?p=chrony/chrony.git%3Ba=commitdiff%3Bh=7712455d9aa33d0db0945effaa07e900b85987b1
- http://permalink.gmane.org/gmane.comp.time.chrony.announce/15Patch, Vendor Advisory
- http://seclists.org/oss-sec/2013/q3/332Patch
- http://www.debian.org/security/2013/dsa-2760
- https://bugzilla.redhat.com/show_bug.cgi?id=846392Patch
- http://git.tuxfamily.org/chrony/chrony.git/?p=chrony/chrony.git%3Ba=commitdiff%3Bh=7712455d9aa33d0db0945effaa07e900b85987b1
- http://permalink.gmane.org/gmane.comp.time.chrony.announce/15Patch, Vendor Advisory
- http://seclists.org/oss-sec/2013/q3/332Patch
- http://www.debian.org/security/2013/dsa-2760
- https://bugzilla.redhat.com/show_bug.cgi?id=846392Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.