CVE-2006-0042

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 6.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2006-02-18 · updated 2026-06-16

Description

Unspecified vulnerability in (1) apreq_parse_headers and (2) apreq_parse_urlencoded functions in Apache2::Request (Libapreq2) before 2.07 allows remote attackers to cause a denial of service (CPU consumption) via unknown attack vectors that result in quadratic computational complexity.

Affected products

Apache Software Foundation libapreq2: before 2.07 — fixed in 2.07
Debian Linux: 3.0, 3.1

How to fix

Upgrade to a fixed version: Apache Software Foundation libapreq2 2.07. Check the vendor advisory for mitigations.

References

http://secunia.com/advisories/18846
http://secunia.com/advisories/19139
http://secunia.com/advisories/19658
http://securityreason.com/securityalert/737
http://svn.apache.org/viewcvs.cgi/httpd/apreq/tags/v2_07/CHANGES?rev=376998&view=markup
http://www.debian.org/security/2006/dsa-1000
http://www.gentoo.org/security/en/glsa/glsa-200604-08.xml
http://www.securityfocus.com/bid/16710
http://www.vupen.com/english/advisories/2006/0645
https://exchange.xforce.ibmcloud.com/vulnerabilities/24917
http://secunia.com/advisories/18846
http://secunia.com/advisories/19139

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