CVE-2013-4788
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...
- Published
- Oct 4, 2013
- Updated
- Aug 6, 2024
- Assigning CNA
- mitre
- Evidence observed
- Sep 30, 2013
Primary CVSS
nvd · CVSS 2.0
AV:N/AC:H/Au:N/C:P/I:P/A:PModerate · next 30 days
- Percentile
- 95.9%
- Model date
- Sep 21, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
Summary
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.
Sources
1Hector Marco & Ismael Ripoll · linux · Sep 30, 2013
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