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CVE-2006-2421

7.5 · HIGH

Stack-based buffer overflow in Pragma FortressSSH 4.0.7.20 allows remote attackers to execute arbitrary code via long SSH_MSG_KEXINIT messages, which may cause an overflow when being logged.

Published May 17, 2006pragma_systemsEPSS 3.18%

Overview

CVE-2006-2421 is a high-severity vulnerability affecting pragma_systems fortressssh. It was published on May 17, 2006 and has a CVSS 2.0 base score of 7.5 (HIGH).

This vulnerability has a CVSS 2.0 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Stack-based buffer overflow in Pragma FortressSSH 4.0.7.20 allows remote attackers to execute arbitrary code via long SSH_MSG_KEXINIT messages, which may cause an overflow when being logged. NOTE: the provenance of this information is unknown; the details are obtained solely from third party information.

Remediation

Check the references section for vendor advisories and patches from pragma_systems. Update fortressssh 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
pragma_systemsfortressssh0Affected

References

Refsecunia.com/advisories/20114Refwww.securityfocus.com/bid/17991Refwww.vupen.com/english/advisories/2006/1820Refexchange.xforce.ibmcloud.com/vulnerabilities/26498Refsecunia.com/advisories/20114Refwww.securityfocus.com/bid/17991Refwww.vupen.com/english/advisories/2006/1820Refexchange.xforce.ibmcloud.com/vulnerabilities/26498

How CyberStrike helps

Frequently asked questions

What is CVE-2006-2421?

CVE-2006-2421 is a high-severity vulnerability affecting pragma_systems fortressssh. It was published on May 17, 2006 and has a CVSS 2.0 base score of 7.5 (HIGH).

How severe is CVE-2006-2421?

This vulnerability has a CVSS 2.0 base score of 7.5, 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-2006-2421?

Check the references section for vendor advisories and patches from pragma_systems. Update fortressssh 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-2006-2421?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2006-2421 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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