CVE-2003-1564

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."

Category

6.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.85% Top 30%
Vendor Advisory redhat.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://secunia.com/advisories/31868 third party advisory broken link
http://xmlsoft.org/news.html release notes
http://www.stylusstudio.com/xmldev/200302/post20020.html broken link mailing list
http://www.reddit.com/r/programming/comments/65843/time_to_upgrade_libxml2 issue tracking
http://mail.gnome.org/archives/xml/2008-August/msg00034.html patch mailing list
http://www.redhat.com/support/errata/RHSA-2008-0886.html vendor advisory broken link

Frequently Asked Questions

What is the severity of CVE-2003-1564?
CVE-2003-1564 has been scored as a medium severity vulnerability.
How to fix CVE-2003-1564?
To fix CVE-2003-1564, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2003-1564 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2003-1564 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.