Vulnerability Description
Multiple integer overflows in the (1) GC_generic_malloc and (2) calloc functions in malloc.c, and the (3) GC_generic_malloc_ignore_off_page function in mallocx.c in Boehm-Demers-Weiser GC (libgc) before 7.2 make it easier for context-dependent attackers to perform memory-related attacks such as buffer overflows via a large size value, which causes less memory to be allocated than expected.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Boehm-Demers-Weiser | Garbage Collector | <= 7.2 |
Related Weaknesses (CWE)
References
- http://kqueue.org/blog/2012/03/05/memory-allocator-security-revisited/
- http://lists.fedoraproject.org/pipermail/package-announce/2012-June/082926.html
- http://lists.fedoraproject.org/pipermail/package-announce/2012-June/082988.html
- http://rhn.redhat.com/errata/RHSA-2013-1500.html
- http://rhn.redhat.com/errata/RHSA-2014-0149.html
- http://rhn.redhat.com/errata/RHSA-2014-0150.html
- http://www.mandriva.com/security/advisories?name=MDVSA-2012:158
- http://www.openwall.com/lists/oss-security/2012/06/05/1
- http://www.openwall.com/lists/oss-security/2012/06/07/13
- http://www.securityfocus.com/bid/54227
- http://www.ubuntu.com/usn/USN-1546-1
- https://github.com/ivmai/bdwgc/blob/master/ChangeLog
- https://github.com/ivmai/bdwgc/commit/6a93f8e5bcad22137f41b6c60a1c7384baaec2b3ExploitPatch
- https://github.com/ivmai/bdwgc/commit/83231d0ab5ed60015797c3d1ad9056295ac3b2bbExploitPatch
- https://github.com/ivmai/bdwgc/commit/be9df82919960214ee4b9d3313523bff44fd99e1Patch
FAQ
What is CVE-2012-2673?
CVE-2012-2673 is a vulnerability with a CVSS score of 5.0 (MEDIUM). Multiple integer overflows in the (1) GC_generic_malloc and (2) calloc functions in malloc.c, and the (3) GC_generic_malloc_ignore_off_page function in mallocx.c in Boehm-Demers-Weiser GC (libgc) befo...
How severe is CVE-2012-2673?
CVE-2012-2673 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-2012-2673?
Check the references section above for vendor advisories and patch information. Affected products include: Boehm-Demers-Weiser Garbage Collector.