CVE-2009-1955
7.5
HIGH
CVSS 3.1
EPSS 2.0%
Description
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.
How to fix CVE-2009-1955
To remediate CVE-2009-1955, upgrade the affected package to a fixed version below.
- —upgrade to 1.3.7+dfsg-1 or later
Is CVE-2009-1955 being exploited?
Low — EPSS is 2.0%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 1.3.7+dfsg-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |