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CVE-2009-2622

5.0 · MEDIUM

Squid 3.0 through 3.0.STABLE16 and 3.1 through 3.1.0.11 allows remote attackers to cause a denial of service via malformed requests including (1) "missing or mismatched protocol identifier," (2) mi…

Published Jul 28, 2009squid-cacheCWE-20EPSS 56.91%

Overview

CVE-2009-2622 is a medium-severity vulnerability affecting squid-cache squid. It was published on July 28, 2009 and has a CVSS 2.0 base score of 5.0 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 5.0, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Squid 3.0 through 3.0.STABLE16 and 3.1 through 3.1.0.11 allows remote attackers to cause a denial of service via malformed requests including (1) "missing or mismatched protocol identifier," (2) missing or negative status value," (3) "missing version," or (4) "missing or invalid status number," related to (a) HttpMsg.cc and (b) HttpReply.cc.

Remediation

Check the references section for vendor advisories and patches from squid-cache. Update squid 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

Refsecunia.com/advisories/36007Refwww.mandriva.com/security/advisories?name=MDVSA-2009:161Refwww.mandriva.com/security/advisories?name=MDVSA-2009:178Refwww.securityfocus.com/bid/35812Refwww.securitytracker.com/id?1022607Refwww.squid-cache.org/Advisories/SQUID-2009_2.txtRefwww.squid-cache.org/Versions/v3/3.1/changesets/b9661.patchRefwww.vupen.com/english/advisories/2009/2013Refsecunia.com/advisories/36007Refwww.mandriva.com/security/advisories?name=MDVSA-2009:161

How CyberStrike helps

Frequently asked questions

What is CVE-2009-2622?

CVE-2009-2622 is a medium-severity vulnerability affecting squid-cache squid. It was published on July 28, 2009 and has a CVSS 2.0 base score of 5.0 (MEDIUM).

How severe is CVE-2009-2622?

This vulnerability has a CVSS 2.0 base score of 5.0, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2009-2622?

Check the references section for vendor advisories and patches from squid-cache. Update squid 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-2009-2622?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2009-2622 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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