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CVE-2015-7941 Detail

Description

libxml2 2.9.2 does not properly stop parsing invalid input, which allows context-dependent attackers to cause a denial of service (out-of-bounds read and libxml2 crash) via crafted XML data to the (1) xmlParseEntityDecl or (2) xmlParseConditionalSections function in parser.c, as demonstrated by non-terminated entities.


Evaluator Description

"context dependent" seems to point to MiTM attack due to: If a user or automated system were tricked into opening a specially crafted document, an attacker could possibly cause libxml2 to crash, resulting in a denial of service. This issue only affected Ubuntu 12.04 LTS, Ubuntu 14.04 LTS and Ubuntu 15.04.

Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://lists.fedoraproject.org/pipermail/package-announce/2016-February/177341.html
http://lists.fedoraproject.org/pipermail/package-announce/2016-February/177381.html
http://lists.opensuse.org/opensuse-updates/2015-12/msg00120.html
http://lists.opensuse.org/opensuse-updates/2016-01/msg00031.html
http://marc.info/?l=bugtraq&m=145382616617563&w=2
http://rhn.redhat.com/errata/RHSA-2015-2549.html
http://rhn.redhat.com/errata/RHSA-2015-2550.html
http://rhn.redhat.com/errata/RHSA-2016-1089.html
http://www.debian.org/security/2015/dsa-3430
http://www.openwall.com/lists/oss-security/2015/10/22/5
http://www.openwall.com/lists/oss-security/2015/10/22/8
http://www.oracle.com/technetwork/topics/security/bulletinjan2016-2867206.html
http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
http://www.securityfocus.com/bid/74241
http://www.securitytracker.com/id/1034243
http://www.ubuntu.com/usn/USN-2812-1
http://xmlsoft.org/news.html
https://bugzilla.gnome.org/show_bug.cgi?id=744980
https://git.gnome.org/browse/libxml2/commit/?id=9b8512337d14c8ddf662fcb98b0135f225a1c489
https://git.gnome.org/browse/libxml2/commit/?id=a7dfab7411cbf545f359dd3157e5df1eb0e7ce31
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04944172
https://security.gentoo.org/glsa/201701-37

Weakness Enumeration

CWE-ID CWE Name Source
CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer cwe source acceptance level NIST  

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Change History

16 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2015-7941
NVD Published Date:
11/18/2015
NVD Last Modified:
09/13/2017
Source:
MITRE