Description

The PTR_MANGLE implementation in the GNU C Library (aka glibc or libc6) 2.4, 2.17, and earlier, and Embedded GLIBC (EGLIBC) does not initialize the random value for the pointer guard, which makes it easier for context-dependent attackers to control execution flow by leveraging a buffer-overflow vulnerability in an application and using the known zero value pointer guard to calculate a pointer address.

References

http://hmarco.org/bugs/CVE-2013-4788.html

http://seclists.org/fulldisclosure/2015/Sep/23

http://www.mandriva.com/security/advisories?name=MDVSA-2013:283

http://www.mandriva.com/security/advisories?name=MDVSA-2013:284

http://www.openwall.com/lists/oss-security/2013/07/15/9

http://www.securityfocus.com/bid/61183

https://security.gentoo.org/glsa/201503-04

Details

Risk Information

CVSS v2