CVE-2015-7942: Buffer Overflow
First published: Wed Nov 18 2015(Updated: )
The xmlParseConditionalSections function in parser.c in libxml2 does not properly skip intermediary entities when it stops parsing invalid input, which allows context-dependent attackers to cause a denial of service (out-of-bounds read and crash) via crafted XML data, a different vulnerability than CVE-2015-7941.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| HP IceWall Federation Agent | =3.0 | |
| HP Icewall File Manager | =3.0 | |
| Debian | =7.0 | |
| Debian | =8.0 | |
| iStyle @cosme iPhone OS | <=9.2.1 | |
| Apple iOS and macOS | <=10.11.3 | |
| tvOS | <=9.1 | |
| Apple iOS, iPadOS, and watchOS | <=2.1 | |
| Ubuntu | =12.04 | |
| Ubuntu | =14.04 | |
| Ubuntu | =15.04 | |
| Ubuntu | =15.10 | |
| libxml2 | =2.9.2 |
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Reference Links
- http://lists.apple.com/archives/security-announce/2016/Mar/msg00000.html
- http://lists.apple.com/archives/security-announce/2016/Mar/msg00001.html
- http://lists.apple.com/archives/security-announce/2016/Mar/msg00002.html
- http://lists.apple.com/archives/security-announce/2016/Mar/msg00004.html
- 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/bulletinapr2016-2952098.html
- http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
- http://www.securityfocus.com/bid/79507
- 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#c8
- https://bugzilla.gnome.org/show_bug.cgi?id=756456
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04944172
- https://security.gentoo.org/glsa/201701-37
- https://support.apple.com/HT206166
- https://support.apple.com/HT206167
- https://support.apple.com/HT206168
- https://support.apple.com/HT206169
Frequently Asked Questions
What is the severity of CVE-2015-7942?
CVE-2015-7942 has a medium severity rating due to its potential to cause denial of service.
How do I fix CVE-2015-7942?
To fix CVE-2015-7942, upgrade affected software versions of libxml2 and other impacted applications.
What systems are affected by CVE-2015-7942?
CVE-2015-7942 affects libxml2 and various versions of HP IceWall, Debian, Apple iOS, macOS, tvOS, watchOS, and Ubuntu.
What kind of attack does CVE-2015-7942 facilitate?
CVE-2015-7942 allows context-dependent attackers to launch denial of service attacks via crafted XML data.
Is CVE-2015-7942 specific to any version of libxml2?
Yes, CVE-2015-7942 specifically affects libxml2 version 2.9.2.
- agent/type
- agent/weakness
- agent/severity
- agent/references
- agent/author
- agent/description
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/first-publish-date
- agent/event
- agent/source
- agent/softwarecombine
- agent/tags
- collector/nvd-index
- agent/software-canonical-lookup-request
- vendor/hp
- canonical/hp icewall federation agent
- version/hp icewall federation agent/3.0
- canonical/hp icewall file manager
- version/hp icewall file manager/3.0
- vendor/debian
- canonical/debian
- version/debian/7.0
- version/debian/8.0
- vendor/apple
- canonical/istyle @cosme iphone os
- version/istyle @cosme iphone os/9.2.1
- canonical/apple ios and macos
- version/apple ios and macos/10.11.3
- canonical/tvos
- version/tvos/9.1
- canonical/apple ios, ipados, and watchos
- version/apple ios, ipados, and watchos/2.1
- vendor/canonical
- canonical/ubuntu
- version/ubuntu/12.04
- version/ubuntu/14.04
- version/ubuntu/15.04
- version/ubuntu/15.10
- vendor/xmlsoft
- canonical/libxml2
- version/libxml2/2.9.2