Vulnerability 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 Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Tuxfamily | Chrony | <= 1.28 |
Related Weaknesses (CWE)
References
- http://git.tuxfamily.org/chrony/chrony.git/?p=chrony/chrony.git%3Ba=commitdiff%3
- http://permalink.gmane.org/gmane.comp.time.chrony.announce/15PatchVendor 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%3
- http://permalink.gmane.org/gmane.comp.time.chrony.announce/15PatchVendor 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
FAQ
What is CVE-2012-4502?
CVE-2012-4502 is a vulnerability with a CVSS score of 5.0 (MEDIUM). 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 re...
How severe is CVE-2012-4502?
CVE-2012-4502 has been rated MEDIUM with a CVSS base score of 5.0/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2012-4502?
Check the references section above for vendor advisories and patch information. Affected products include: Tuxfamily Chrony.