CVE-2015-7941: Buffer Overflow
First published: Wed Nov 18 2015(Updated: )
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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Ubuntu | =12.04 | |
| Ubuntu | =14.04 | |
| Ubuntu | =15.04 | |
| libxml2-devel | =2.9.2 |
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Reference Links
- 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
Frequently Asked Questions
What is the severity of CVE-2015-7941?
CVE-2015-7941 is classified as a denial of service vulnerability due to the potential for out-of-bounds reads and crashes.
How do I fix CVE-2015-7941?
To fix CVE-2015-7941, upgrade libxml2 to a version later than 2.9.2 that addresses this vulnerability.
What software is affected by CVE-2015-7941?
CVE-2015-7941 affects libxml2 version 2.9.2 and Ubuntu Linux versions 12.04, 14.04, and 15.04.
Can CVE-2015-7941 lead to data exposure?
CVE-2015-7941 primarily results in denial of service, not direct data exposure, but the crash may lead to temporary unavailability.
Who can exploit CVE-2015-7941?
CVE-2015-7941 can be exploited by context-dependent attackers who deliver crafted XML data.
- agent/type
- agent/references
- collector/mitre-cve
- source/MITRE
- agent/weakness
- agent/last-modified-date
- agent/severity
- agent/author
- agent/description
- agent/first-publish-date
- agent/event
- agent/source
- agent/softwarecombine
- agent/tags
- collector/nvd-index
- agent/software-canonical-lookup-request
- vendor/canonical
- canonical/ubuntu
- version/ubuntu/12.04
- version/ubuntu/14.04
- version/ubuntu/15.04
- vendor/xmlsoft
- canonical/libxml2-devel
- version/libxml2-devel/2.9.2