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CVE-2009-0840

10.0 · HIGH

Heap-based buffer underflow in the readPostBody function in cgiutil.c in mapserv in MapServer 4.x before 4.10.4 and 5.x before 5.2.2 allows remote attackers to have an unknown impact via a negative…

Published Mar 31, 2009osgeoCWE-119EPSS 5.28%

Overview

CVE-2009-0840 is a high-severity vulnerability affecting osgeo mapserver. It was published on March 31, 2009 and has a CVSS 2.0 base score of 10.0 (HIGH).

This vulnerability has a CVSS 2.0 base score of 10.0, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Heap-based buffer underflow in the readPostBody function in cgiutil.c in mapserv in MapServer 4.x before 4.10.4 and 5.x before 5.2.2 allows remote attackers to have an unknown impact via a negative value in the Content-Length HTTP header.

Remediation

Check the references section for vendor advisories and patches from osgeo. Update mapserver to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus

References

Reflists.osgeo.org/pipermail/mapserver-users/2009-March/060600.htmlRefsecunia.com/advisories/34520Refsecunia.com/advisories/34603Reftrac.osgeo.org/mapserver/ticket/2943Refwww.debian.org/security/2009/dsa-1914Refwww.positronsecurity.com/advisories/2009-000.htmlRefwww.securityfocus.com/archive/1/502271/100/0/threadedRefwww.securityfocus.com/bid/34306Refwww.securitytracker.com/id?1021952Refexchange.xforce.ibmcloud.com/vulnerabilities/49545

How CyberStrike helps

Frequently asked questions

What is CVE-2009-0840?

CVE-2009-0840 is a high-severity vulnerability affecting osgeo mapserver. It was published on March 31, 2009 and has a CVSS 2.0 base score of 10.0 (HIGH).

How severe is CVE-2009-0840?

This vulnerability has a CVSS 2.0 base score of 10.0, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2009-0840?

Check the references section for vendor advisories and patches from osgeo. Update mapserver to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2009-0840?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2009-0840 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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