#VU33820 Input validation error in Libxml2 - CVE-2014-0191
Vulnerability identifier: #VU33820
Vulnerability risk: Medium
CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2014-0191
CWE-ID:
CWE-20
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Libxml2
Universal components / Libraries /
Libraries used by multiple products
Vendor: Gnome Development Team
Description
The vulnerability allows a remote non-authenticated attacker to perform service disruption.
The xmlParserHandlePEReference function in parser.c in libxml2 before 2.9.2, as used in Web Listener in Oracle HTTP Server in Oracle Fusion Middleware 11.1.1.7.0, 12.1.2.0, and 12.1.3.0 and other products, loads external parameter entities regardless of whether entity substitution or validation is enabled, which allows remote attackers to cause a denial of service (resource consumption) via a crafted XML document.
Mitigation
Install update from vendor's website.
Vulnerable software versions
Libxml2: 2.9.0 - 2.9.1
External links
https://lists.apple.com/archives/security-announce/2015/Aug/msg00001.html
https://lists.apple.com/archives/security-announce/2015/Aug/msg00002.html
https://lists.opensuse.org/opensuse-updates/2015-12/msg00120.html
https://rhn.redhat.com/errata/RHSA-2015-0749.html
https://www.oracle.com/technetwork/topics/security/cpujan2015-1972971.html
https://www.oracle.com/technetwork/topics/security/cpuoct2015-2367953.html
https://www.securityfocus.com/bid/67233
https://www-01.ibm.com/support/docview.wss?uid=swg21678183
https://xmlsoft.org/news.html
https://bugzilla.redhat.com/show_bug.cgi?id=1090976
https://exchange.xforce.ibmcloud.com/vulnerabilities/93092
https://git.gnome.org/browse/libxml2/commit/?id=9cd1c3cfbd32655d60572c0a413e017260c854df
https://support.apple.com/kb/HT205030
https://support.apple.com/kb/HT205031
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
