CVE-2014-3660

MEDIUM

Description

parser.c in libxml2 before 2.9.2 does not properly prevent entity expansion even when entity substitution has been disabled, which allows context-dependent attackers to 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.

References

http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10705

http://lists.apple.com/archives/security-announce/2015/Aug/msg00001.html

http://lists.apple.com/archives/security-announce/2015/Aug/msg00002.html

http://lists.opensuse.org/opensuse-updates/2014-10/msg00034.html

http://lists.opensuse.org/opensuse-updates/2015-12/msg00120.html

http://rhn.redhat.com/errata/RHSA-2014-1655.html

http://rhn.redhat.com/errata/RHSA-2014-1885.html

http://secunia.com/advisories/59903

http://secunia.com/advisories/61965

http://secunia.com/advisories/61966

http://secunia.com/advisories/61991

http://www.debian.org/security/2014/dsa-3057

http://www.mandriva.com/security/advisories?name=MDVSA-2014:244

http://www.openwall.com/lists/oss-security/2014/10/17/7

http://www.oracle.com/technetwork/topics/security/bulletinjan2015-2370101.html

http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html

http://www.securityfocus.com/bid/70644

http://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

Details

Source: MITRE

Published: 2014-11-04

Updated: 2016-12-08

Risk Information

CVSS v2.0

Base Score: 5

Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P

Impact Score: 2.9

Exploitability Score: 10

Severity: MEDIUM