CVE-2012-0876 Denial of service in n/a

What is CVE-2012-0876?

CVE-2012-0876 is a medium-severity denial of service vulnerability in Canonical Ubuntu Linux, published on 3 Jul 2012. 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 XML parser (xmlparse.c) in expat before 2.1.0 computes hash values without restricting the ability to trigger hash collisions predictably, which allows context-dependent attackers to cause a denial of service (CPU consumption) via an XML file with many identifiers with the same value.

Weakness: CWE-400

Which versions are affected by CVE-2012-0876?

It affects 11 products.

Products include Canonical Ubuntu Linux, Debian Debian Linux, Libexpat Project Libexpat, Oracle Solaris, Python Python, Redhat Enterprise Linux Desktop and 5 more.

How do I fix CVE-2012-0876?

Upgrade to a fixed version.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2012-0876 being exploited?

There is no known exploitation of CVE-2012-0876 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 DEBIAN-CVE-2012-0876, GHSA-q8w9-7fww-v592, PSF-2012-4, UBUNTU-CVE-2012-0876.