What’s Vulnerable › Vulnerabilities

CVE-2009-2299

• Severity: medium (CVSS 5.0 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 4.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2009-07-02 · updated 2026-06-16

Description

The Artofdefence Hyperguard Web Application Firewall (WAF) module before 2.5.5-11635, 3.0 before 3.0.3-11636, and 3.1 before 3.1.1-11637, a module for the Apache HTTP Server, allows remote attackers to cause a denial of service (memory consumption) via an HTTP request with a large Content-Length value but no POST data.

Affected products

• Hyperguard Web Application Firewall Project Hyperguard Web Application Firewall: before 2.5.5-11635; from 3.0 before 3.0.3-11636; from 3.1 before 3.1.1-11637 — fixed in 2.5.5-11635, 3.0.3-11636, 3.1.1-11637

How to fix

Upgrade to a fixed version: Hyperguard Web Application Firewall Project Hyperguard Web Application Firewall 2.5.5-11635, 3.0.3-11636, 3.1.1-11637. Check the vendor advisory for mitigations.

References

• http://secunia.com/advisories/35645
• http://www.h4ck1nb3rg.at/wafs/advisory_artofdefence_hyperguard_200907.txt
• http://www.securityfocus.com/archive/1/504680/100/0/threaded
• http://secunia.com/advisories/35645
• http://www.h4ck1nb3rg.at/wafs/advisory_artofdefence_hyperguard_200907.txt
• http://www.securityfocus.com/archive/1/504680/100/0/threaded

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