CVE-2003-1564

6.5 MEDIUM
Published: December 31, 2003 Modified: April 16, 2026
View on NVD

Description

libxml2, possibly before 2.5.0, does not properly detect recursion during entity expansion, which allows context-dependent attackers to cause a denial of service (memory and CPU consumption) via a crafted XML document containing a large number of nested entity references, aka the "billion laughs attack."

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
http://secunia.com/advisories/31868
Source: cve@mitre.org
Broken Link
http://xmlsoft.org/news.html
Source: cve@mitre.org
Release Notes
http://mail.gnome.org/archives/xml/2008-August/msg00034.html
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List Patch
http://secunia.com/advisories/31868
Source: af854a3a-2127-422b-91ae-364da2661108
Broken Link
http://www.reddit.com/r/programming/comments/65843/time_to_upgrade_libxml2
Source: af854a3a-2127-422b-91ae-364da2661108
Issue Tracking
http://www.redhat.com/support/errata/RHSA-2008-0886.html
Source: af854a3a-2127-422b-91ae-364da2661108
Broken Link
http://www.stylusstudio.com/xmldev/200302/post20020.html
Source: af854a3a-2127-422b-91ae-364da2661108
Broken Link
http://xmlsoft.org/news.html
Source: af854a3a-2127-422b-91ae-364da2661108
Release Notes

12 reference(s) from NVD

Quick Stats

CVSS v3 Score
6.5 / 10.0
EPSS (Exploit Probability)
0.6%
71th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

xmlsoft