Medium severity · published Dec 31, 2003
CVE-2003-1564
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…
6.5
CVSS
1.6%
EPSS
No
On KEV
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."
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.6% · higher than 76% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LI
Libxml2 · Xmlsoft
before 2.5.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2003-1564
CVE.org
https://www.cve.org/CVERecord?id=CVE-2003-1564
Mailing List
http://mail.gnome.org/archives/xml/2008-August/msg00034.html
Broken Link
http://secunia.com/advisories/31868
Issue Tracking
http://www.reddit.com/r/programming/comments/65843/time_to_upgrade_libxml2
Broken Link
http://www.redhat.com/support/errata/RHSA-2008-0886.html
Broken Link
http://www.stylusstudio.com/xmldev/200302/post20020.html
Release Notes
http://xmlsoft.org/news.html
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