CVE-2013-0339 XML external entity in n/a

What is CVE-2013-0339?

CVE-2013-0339 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 21 Jan 2014. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

libxml2 through 2.9.1 does not properly handle external entities expansion unless an application developer uses the xmlSAX2ResolveEntity or xmlSetExternalEntityLoader function, which allows remote attackers to cause a denial of service (resource consumption), send HTTP requests to intranet servers, or read arbitrary files via a crafted XML document, aka an XML External Entity (XXE) issue. NOTE: it could be argued that because libxml2 already provides the ability to disable external entity expansion, the responsibility for resolving this issue lies with application developers; according to this argument, this entry should be REJECTed and each affected application would need its own CVE.

Weakness: CWE-264

Which versions are affected by CVE-2013-0339?

It affects 4 products.

Products include Canonical Ubuntu Linux, Debian Debian Linux, Suse Linux Enterprise Server, Xmlsoft Libxml2.

How do I fix CVE-2013-0339?

Apply the vendor's patch.

Is CVE-2013-0339 being exploited?

There is no known exploitation of CVE-2013-0339 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-2013-0339, GHSA-4qgp-72gr-jfg9.