CVE-2014-3660

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.

5.0

CVSS

Severity: Medium

CVSS 2.0 •

EPSS 4.32% Top 15%

Vendor Advisory debian.org Vendor Advisory opensuse.org Vendor Advisory ubuntu.com Vendor Advisory apple.com Vendor Advisory apple.com Vendor Advisory mandriva.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory opensuse.org Vendor Advisory apple.com Vendor Advisory apple.com

Affected: n/a n/a

References

Link	Tags
http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
http://secunia.com/advisories/59903	third party advisory
https://www.ncsc.nl/actueel/nieuwsberichten/kwetsbaarheid-ontdekt-in-libxml2.html
http://www.debian.org/security/2014/dsa-3057	vendor advisory
https://support.apple.com/kb/HT205030	vendor advisory
http://www.securityfocus.com/bid/70644	vdb entry
http://lists.opensuse.org/opensuse-updates/2014-10/msg00034.html	vendor advisory
https://bugzilla.redhat.com/attachment.cgi?id=944444&action=diff
http://secunia.com/advisories/61966	third party advisory
http://secunia.com/advisories/61965	third party advisory
http://www.ubuntu.com/usn/USN-2389-1	vendor advisory
http://lists.apple.com/archives/security-announce/2015/Aug/msg00001.html	vendor advisory
http://lists.apple.com/archives/security-announce/2015/Aug/msg00002.html	vendor advisory
http://www.openwall.com/lists/oss-security/2014/10/17/7	mailing list patch
http://www.mandriva.com/security/advisories?name=MDVSA-2014:244	vendor advisory
http://rhn.redhat.com/errata/RHSA-2014-1655.html	vendor advisory
http://rhn.redhat.com/errata/RHSA-2014-1885.html	vendor advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1149084
http://www.oracle.com/technetwork/topics/security/bulletinjan2015-2370101.html
http://secunia.com/advisories/61991	third party advisory
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10705
http://lists.opensuse.org/opensuse-updates/2015-12/msg00120.html	vendor advisory
https://support.apple.com/kb/HT205031	vendor advisory

Frequently Asked Questions

What is the severity of CVE-2014-3660?: CVE-2014-3660 has been scored as a medium severity vulnerability.
How to fix CVE-2014-3660?: To fix CVE-2014-3660, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2014-3660 being actively exploited in the wild?: It is possible that CVE-2014-3660 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~4% probability that this vulnerability will be exploited by malicious actors in the next 30 days.