CVE-2011-2691 Null dereference in n/a
Remote attackers can crash applications using libpng by submitting crafted PNG images that trigger a null pointer dereference in error handling.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2011-2691?
CVE-2011-2691 is a medium-severity vulnerability in Debian Debian Linux, published on 17 Jul 2011. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
The png_err function in pngerror.c in libpng 1.0.x before 1.0.55, 1.2.x before 1.2.45, 1.4.x before 1.4.8, and 1.5.x before 1.5.4 makes a function call using a NULL pointer argument instead of an empty-string argument, which allows remote attackers to cause a denial of service (application crash) via a crafted PNG image.
Weakness: CWE-476
Which versions are affected by CVE-2011-2691?
It affects 3 products.
Products include Debian Debian Linux, Fedoraproject Fedora, Libpng Libpng.
How do I fix CVE-2011-2691?
Upgrade to a fixed version.
Is CVE-2011-2691 being exploited?
There is no known exploitation of CVE-2011-2691 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as AZL-41475, GHSA-vprr-5687-f565.