CVE-2013-4788 Memory corruption in n/a
Attackers can bypass pointer mangling protections in glibc to facilitate code execution via buffer overflows by exploiting uninitialized pointer guards.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Not stated
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2013-4788?
CVE-2013-4788 is a medium-severity memory corruption vulnerability in Gnu Glibc, published on 4 Oct 2013.
Official 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: CWE-20
Which versions are affected by CVE-2013-4788?
It affects 2 products.
Products include Gnu Eglibc, Gnu Glibc.
How do I fix CVE-2013-4788?
Upgrade to a fixed version.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2013-4788 being exploited?
There is no known exploitation of CVE-2013-4788 in the wild and no public exploit code.
Public exploit code: 1 Exploit-DB entry.
Other vulnerabilities in Gnu Glibc
Sources
Also known as DEBIAN-CVE-2013-4788, GHSA-xh2f-h76w-4qqc.