Fluid Attacks Database

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.

Mitigation

Update Impact

Minimal update. May introduce new vulnerabilities or breaking changes.

Ecosystem	Component	Affected version	Patched versions
debian 12	libxml2	>=0 <2.9.3+dfsg1-1.1	2.9.3+dfsg1-1.1
debian 13	libxml2	>=0 <2.9.3+dfsg1-1.1	2.9.3+dfsg1-1.1
debian 14	libxml2	>=0 <2.9.3+dfsg1-1.1	2.9.3+dfsg1-1.1
nuget	libxml2	=2.9.3	-
rpm rhel6	libxml2	<0:2.7.6-21.el6_8.1	0:2.7.6-21.el6_8.1
rpm rhel7	libxml2	<0:2.9.1-6.el7_2.3	0:2.9.1-6.el7_2.3
rpm rhel5	libxml2	-	-

Aliases

1. CVE-2016-37052. NVD-2016-37053. OSV-DEBIAN-2016-37054. OSV-2016-37055. GCVE-2016-37056. SECURITY-TRACKER-CVE-2016-3705

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