CVE-2013-0339

Publication date 26 February 2013

Last updated 4 August 2025

Ubuntu priority

Medium

Why this priority?

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.

Status

Package Ubuntu Release Status
libxml2 13.04 raring
Not affected
12.10 quantal
Fixed 2.8.0+dfsg1-5ubuntu2.3
12.04 LTS precise
Fixed 2.7.8.dfsg-5.1ubuntu4.5
10.04 LTS lucid
Fixed 2.7.6.dfsg-1ubuntu1.9

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
libxml2

References

Related Ubuntu Security Notices (USN)

Other references