VULNERABILITY INTELLIGENCE

CVE-2013-4788

CVSS score5.1 MEDIUM
EPSS probability11.43%
CISA KEVNot currently listed
Published2013-10-04
Last modified2026-06-16
CVSS vectorAV:N/AC:H/Au:N/C:P/I:P/A:P

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.

Weakness classification

  • CWE-20: Improper Input Validation

Primary references