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.
Published 2009-06-08 01:00:01
Updated 2024-02-02 14:11:44
Source MITRE
View at NVD,   CVE.org
Vulnerability category: Denial of service

Threat overview for CVE-2009-1955

Top countries where our scanners detected CVE-2009-1955
Top open port discovered on systems with this issue 5555
IPs affected by CVE-2009-1955 123
Threat actors abusing to this issue? Yes
Find out if you* are affected by CVE-2009-1955!
*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

Exploit prediction scoring system (EPSS) score for CVE-2009-1955

22.08%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 96 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2009-1955

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
5.0
MEDIUM AV:N/AC:L/Au:N/C:N/I:N/A:P
10.0
2.9
NIST
7.5
HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.9
3.6
NIST 2024-02-02

CWE ids for CVE-2009-1955

References for CVE-2009-1955

Products affected by CVE-2009-1955

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