The expat XML parser in the apr_xml_* interface in xml/apr_xml.c in Apache APR-util before 1.3.7, as used in the mod_dav and mod_dav_svn modules in the Apache HTTP Server, allows remote attackers to cause a denial of service (memory consumption) via a crafted XML document containing a large number of nested entity references, as demonstrated by a PROPFIND request, a similar issue to CVE-2003-1564.

Threat-Mapped Scoring

Score: 1.5

Priority: P4 - Informational (Low)

• S10 – Denial of Service

EPSS

Score: 0.03662
Percentile: 0.87391

CVSS Scoring

Mapped CWE(s)

• CWE-776 : Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')

All CAPEC(s)

CAPEC(s) with Mapped TTPs

Mapped ATT&CK TTPs

Affected Products

• cpe:2.3:a:apache:apr-util:*:*:*:*:*:*:*:*
• cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
• cpe:2.3:o:suse:linux_enterprise_server:9:*:*:*:*:*:*:*
• cpe:2.3:o:debian:debian_linux:4.0:*:*:*:*:*:*:*
• cpe:2.3:o:canonical:ubuntu_linux:6.06:*:*:*:*:*:*:*
• cpe:2.3:o:canonical:ubuntu_linux:8.04:*:*:*:-:*:*:*
• cpe:2.3:o:canonical:ubuntu_linux:8.10:*:*:*:*:*:*:*
• cpe:2.3:o:canonical:ubuntu_linux:9.04:*:*:*:*:*:*:*
• cpe:2.3:o:fedoraproject:fedora:9:*:*:*:*:*:*:*
• cpe:2.3:o:fedoraproject:fedora:10:*:*:*:*:*:*:*
• cpe:2.3:o:fedoraproject:fedora:11:*:*:*:*:*:*:*
• cpe:2.3:a:oracle:http_server:-:*:*:*:*:*:*:*
• cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*

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