CVE-2016-3705 Information

Description

The (1) xmlParserEntityCheck and (2) xmlParseAttValueComplex functions in parser.c in libxml2 2.9.3 do not properly keep track of the recursion depth which allows context-dependent attackers to cause a denial of service (stack consumption and application crash) via a crafted XML document containing a large number of nested entity references.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Reference

http://lists.opensuse.org/opensuse-updates/2016-05/msg00055.html http://lists.opensuse.org/opensuse-updates/2016-05/msg00127.html http://rhn.redhat.com/errata/RHSA-2016-2957.html http://seclists.org/fulldisclosure/2016/May/10 http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.html http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html http://www.securityfocus.com/bid/89854 http://www.ubuntu.com/usn/USN-2994-1 https://access.redhat.com/errata/RHSA-2016:1292 https://bugzilla.gnome.org/show_bug.cgi?id=765207 https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05157239 https://kc.mcafee.com/corporate/index?page=content&id=SB10170 https://security.gentoo.org/glsa/201701-37 https://www.debian.org/security/2016/dsa-3593 https://www.tenable.com/security/tns-2016-18

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5