CVE-2015-8777 Security feature bypass in n/a

Medium 5.5 Published 20 Jan 2016 Updated 6 Aug 2024

Local attackers can bypass pointer-guarding protections in glibc by setting a specific environment variable, undermining memory safety mechanisms.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: Available

What is CVE-2015-8777?

CVE-2015-8777 is a medium-severity vulnerability in Gnu Glibc, published on 20 Jan 2016. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

The process_envvars function in elf/rtld.c in the GNU C Library (aka glibc or libc6) before 2.23 allows local users to bypass a pointer-guarding protection mechanism via a zero value of the LD_POINTER_GUARD environment variable.

Weakness: CWE-254

Which versions are affected by CVE-2015-8777?

It affects 1 product.

Products include Gnu Glibc.

How do I fix CVE-2015-8777?

Upgrade to a fixed version.

Is CVE-2015-8777 being exploited?

There is no known exploitation of CVE-2015-8777 in the wild and no public exploit code.

All Gnu Glibc vulnerabilities

Sources

Also known as DEBIAN-CVE-2015-8777, GHSA-2gq8-953m-fqr3, UBUNTU-CVE-2015-8777.