CVE-2011-2501 Memory corruption in n/a

What is CVE-2011-2501?

CVE-2011-2501 is a medium-severity memory corruption vulnerability in Canonical Ubuntu 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_format_buffer 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 allows remote attackers to cause a denial of service (application crash) via a crafted PNG image that triggers an out-of-bounds read during the copying of error-message data. NOTE: this vulnerability exists because of a CVE-2004-0421 regression. NOTE: this is called an off-by-one error by some sources.

Weakness: CWE-125

Which versions are affected by CVE-2011-2501?

It affects 4 products.

Products include Canonical Ubuntu Linux, Debian Debian Linux, Fedoraproject Fedora, Libpng Libpng.

How do I fix CVE-2011-2501?

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-2011-2501 being exploited?

There is no known exploitation of CVE-2011-2501 in the wild and no public exploit code.

Other vulnerabilities in Canonical Ubuntu Linux

• CVE-2020-11651 SaltStack Salt Authentication Bypass Exploited Critical 9.8
• CVE-2020-7247 OpenSMTPD Remote Code Execution Exploited Critical 9.8
• CVE-2019-16928 Exim Out-of-bounds Write Exploited Critical 9.8
• CVE-2018-6789 Exim Buffer Overflow Exploited Critical 9.8
• CVE-2015-2590 Oracle Java SE and Java SE Embedded Remote Code Execution Exploited Critical 9.8

All Canonical Ubuntu Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as AZL-40745, GHSA-8m2c-g35f-jj8v.