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VULNERABILITIES

CVE-2003-1564 Details

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."

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:6.5 MEDIUMVector: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

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URLSource(s)Tag(s)
http://mail.gnome.org/archives/xml/2008-August/msg00034.html CVEMailing ListPatch
http://secunia.com/advisories/31868 CVEBroken Link
http://www.reddit.com/r/programming/comments/65843/time_to_upgrade_libxml2 CVEIssue Tracking
http://www.redhat.com/support/errata/RHSA-2008-0886.html CVEBroken Link
http://www.stylusstudio.com/xmldev/200302/post20020.html CVEBroken Link

see all 12 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-776Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')[email protected]

Affected Products

ProductVersions
xmlsoft libxml2
< 2.5.0

CPE

  • cpe:2.3:a:xmlsoft:libxml2:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

6 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2003-1564
NVD Published Date:
Dec 31, 2003
NVD Last Modified:
Jun 16, 2026
Source:
[email protected]
CVE-2003-1564 Details - Not Deferred