#VU82372 Input validation error in Libxml2 - CVE-2014-3660
Vulnerability identifier: #VU82372
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:
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 context-dependent attackers to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can cause a denial of service (CPU consumption) via a crafted XML document containing a large number of nested entity references, a variant of the "billion laughs" attack.
Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability..
Vulnerable software versions
Libxml2: 2.9.0 - 2.9.1
External links
https://kb.juniper.net/InfoCenter/index?page=content&id=JSA10705
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/2014-10/msg00034.html
https://lists.opensuse.org/opensuse-updates/2015-12/msg00120.html
https://rhn.redhat.com/errata/RHSA-2014-1655.html
https://rhn.redhat.com/errata/RHSA-2014-1885.html
https://secunia.com/advisories/59903
https://secunia.com/advisories/61965
https://secunia.com/advisories/61966
https://secunia.com/advisories/61991
https://www.debian.org/security/2014/dsa-3057
https://www.mandriva.com/security/advisories?name=MDVSA-2014:244
https://www.openwall.com/lists/oss-security/2014/10/17/7
https://www.oracle.com/technetwork/topics/security/bulletinjan2015-2370101.html
https://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
https://www.securityfocus.com/bid/70644
https://www.ubuntu.com/usn/USN-2389-1
https://bugzilla.redhat.com/attachment.cgi?id=944444&action=diff
https://bugzilla.redhat.com/show_bug.cgi?id=1149084
https://support.apple.com/kb/HT205030
https://support.apple.com/kb/HT205031
https://www.ncsc.nl/actueel/nieuwsberichten/kwetsbaarheid-ontdekt-in-libxml2.html
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.
