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CVE-2015-5312

20
FAUCET Score

CVE-2015-5312 describes a denial-of-service vulnerability in the libxml2 library, specifically within the xmlStringLenDecodeEntities function, affecting various products including Apple, Canonical, Debian, HP, Red Hat, and xmlsoft. This flaw allows remote attackers to cause high CPU consumption by submitting crafted XML data, due to improper entity expansion. While the CVSS score of 7.1 indicates high severity with a network attack vector and medium attack complexity, there is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
12.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*
14.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
15.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:15.04:*:*:*:*:*:*:*
15.10CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:*
6.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.1HIGH

AV:N/AC:M/Au:N/C:N/I:N/A:C

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
6.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
4.54%
Probability of exploitation in next 30 days
EPSS Percentile
90.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0454 is in the 56th percentile among its peer group of 8,920 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (7)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: libxml2-0:2.9.1-6.el7_2.2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: libxml2-0:2.7.6-20.el6_7.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Web Server 3.0Fixed in: libxml2
View patch
rubygemspatch availablevia ghsa
Product: nokogiriFixed in: 1.6.7.1
applevendor investigatingvia nvd_reference
View patch
redhatend of lifevia redhat_api
Product: Red Hat JBoss Enterprise Web Server 2Fixed in: libxml2
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: libxml2

Vendor Advisories (2)

rubygemsGHSA-xjqg-9jvg-fgx2high

Nokogiri subject to DoS via libxml2 vulnerability

Aug 21, 2018
redhatCVE-2015-5312Moderate

libxml2: CPU exhaustion when processing specially crafted XML input

Dec 1, 2015

References

lists.apple.com / archives/security-announce/2016/Mar/msg00000.html
lists.apple.com / archives/security-announce/2016/Mar/msg00001.html
lists.apple.com / archives/security-announce/2016/Mar/msg00002.html
Third Party Advisory
lists.apple.com / archives/security-announce/2016/Mar/msg00004.html
Mailing List
lists.opensuse.org / opensuse-updates/2015-12/msg00120.html
lists.opensuse.org / opensuse-updates/2016-01/msg00031.html
marc.info
Third Party Advisory
rhn.redhat.com / errata/RHSA-2015-2549.html
Third Party Advisory
rhn.redhat.com / errata/RHSA-2015-2550.html
Third Party Advisory
rhn.redhat.com / errata/RHSA-2016-1089.html
bugzilla.redhat.com / show_bug.cgi
Issue Tracking
git.gnome.org / browse/libxml2/commit
h20566.www2.hpe.com / portal/site/hpsc/public/kb/docDisplay
Third Party Advisory
security.gentoo.org / glsa/201701-37
support.apple.com / HT206166
Vendor Advisory
support.apple.com / HT206167
Vendor Advisory
support.apple.com / HT206168
Vendor Advisory
support.apple.com / HT206169
Vendor Advisory
debian.org / security/2015/dsa-3430
Third Party Advisory
oracle.com / technetwork/topics/security/bulletinjan2016-2867206.html
oracle.com / technetwork/topics/security/linuxbulletinoct2015-2719645.html
securityfocus.com / bid/79536
securitytracker.com / id/1034243
ubuntu.com / usn/USN-2834-1
Third Party Advisory
xmlsoft.org / news.html
Vendor Advisory