CVE-2013-0339

Summary

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.

Impact & exploitability

AV:N/AC:M/Au:N/C:P/I:P/A:P

Affected products we track (2)

Recommendation

Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.

Additional information

• NVD record
• http://secunia.com/advisories/52662Advisory
• http://lists.opensuse.org/opensuse-security-announce/2013-11/msg00002.html
• http://openwall.com/lists/oss-security/2013/02/21/24
• http://openwall.com/lists/oss-security/2013/02/22/3
• http://seclists.org/oss-sec/2013/q4/182
• http://seclists.org/oss-sec/2013/q4/184
• http://seclists.org/oss-sec/2013/q4/188
• http://secunia.com/advisories/54172