What’s Vulnerable › Vulnerabilities

CVE-2009-1903

• Severity: medium (CVSS 4.3 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2009-06-03 · updated 2026-06-16

Description

The PDF XSS protection feature in ModSecurity before 2.5.8 allows remote attackers to cause a denial of service (Apache httpd crash) via a request for a PDF file that does not use the GET method.

Affected products

• Fedoraproject Fedora: 9, 10
• Trustwave Modsecurity: before 2.5.8 — fixed in 2.5.8

How to fix

Upgrade to a fixed version: Trustwave Modsecurity 2.5.8. Check the vendor advisory for mitigations.

References

• http://secunia.com/advisories/34256
• http://secunia.com/advisories/34311
• http://secunia.com/advisories/35687
• http://security.gentoo.org/glsa/glsa-200907-02.xml
• http://sourceforge.net/project/shownotes.php?release_id=667538
• http://www.osvdb.org/52552
• http://www.securityfocus.com/bid/34096
• http://www.vupen.com/english/advisories/2009/0703
• https://exchange.xforce.ibmcloud.com/vulnerabilities/49211
• https://www.redhat.com/archives/fedora-package-announce/2009-March/msg00487.html
• https://www.redhat.com/archives/fedora-package-announce/2009-March/msg00529.html
• http://secunia.com/advisories/34256

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