9 High
AI Score
Confidence
High
6.8 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
0.019 Low
EPSS
Percentile
88.2%
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.
lists.opensuse.org/opensuse-security-announce/2013-11/msg00002.html
openwall.com/lists/oss-security/2013/02/21/24
openwall.com/lists/oss-security/2013/02/22/3
seclists.org/oss-sec/2013/q4/182
seclists.org/oss-sec/2013/q4/184
seclists.org/oss-sec/2013/q4/188
secunia.com/advisories/52662
secunia.com/advisories/54172
secunia.com/advisories/55568
www.debian.org/security/2013/dsa-2652
www.openwall.com/lists/oss-security/2013/04/12/6
www.ubuntu.com/usn/USN-1904-1
www.ubuntu.com/usn/USN-1904-2
bugzilla.redhat.com/show_bug.cgi?id=915149
git.gnome.org/browse/libxml2/commit/?id=4629ee02ac649c27f9c0cf98ba017c6b5526070f