Vulnerability CVE-2015-7942

Vulnerability CVE-2015-7942

Published: 2015-11-18

Description:

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.

See advisories in our WLB2 database:

	Topic	Author	Date
Med.	libxml2 Out of bounds memory access	Michal Zalewski	23.10.2015

Type:

CWE-119

(Improper Restriction of Operations within the Bounds of a Memory Buffer)

CVSS2 => (AV:N/AC:M/Au:N/C:P/I:P/A:P)

CVSS Base Score	Impact Subscore	Exploitability Subscore
6.8/10	6.4/10	8.6/10

Exploit range	Attack complexity	Authentication
Remote	Medium	No required
Confidentiality impact	Integrity impact	Availability impact
Partial	Partial	Partial

Affected software
Xmlsoft -> Libxml2
HP -> Icewall federation agent
HP -> Icewall file manager
Debian -> Debian linux
Canonical -> Ubuntu linux
Apple -> Apple tv
Apple -> Iphone os
Apple -> Mac os x
Apple -> Watchos
Apple -> TVOS

References:

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

Vulnerability CVE-2015-7942

See advisories in our WLB2 database:

Med.

libxml2 Out of bounds memory access

CWE-119

CVSS2 => (AV:N/AC:M/Au:N/C:P/I:P/A:P)

6.8/10

6.4/10

8.6/10

Remote

Medium

No required

Partial

Partial

Partial

Affected software

References: