Vulnerability CVE-2012-2673
Published: 2012-07-25

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.

CVSS2 => (AV:N/AC:L/Au:N/C:N/I:P/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
Partial
None
Affected software
Boehm-demers-weiser -> Garbage collector 

 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/6a93f8e5bcad22137f41b6c60a1c7384baaec2b3
https://github.com/ivmai/bdwgc/commit/83231d0ab5ed60015797c3d1ad9056295ac3b2bb
https://github.com/ivmai/bdwgc/commit/be9df82919960214ee4b9d3313523bff44fd99e1
https://github.com/ivmai/bdwgc/commit/e10c1eb9908c2774c16b3148b30d2f3823d66a9a
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