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CVE-2015-5400

6.8 · MEDIUM

Squid before 3.5.6 does not properly handle CONNECT method peer responses when configured with cache_peer, which allows remote attackers to bypass intended restrictions and gain access to a backend…

Published Sep 28, 2015fedoraprojectCWE-264EPSS 20.84%

Overview

CVE-2015-5400 is a medium-severity vulnerability affecting fedoraproject fedora. It was published on September 28, 2015 and has a CVSS 2.0 base score of 6.8 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 6.8, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Squid before 3.5.6 does not properly handle CONNECT method peer responses when configured with cache_peer, which allows remote attackers to bypass intended restrictions and gain access to a backend proxy via a CONNECT request.

Remediation

Check the references section for vendor advisories and patches from fedoraproject. Update fedora 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
squid-cachesquid0Affected

References

Reflists.fedoraproject.org/pipermail/package-announce/2016-May/183598.htmlReflists.opensuse.org/opensuse-security-announce/2016-08/msg00010.htmlReflists.opensuse.org/opensuse-security-announce/2016-08/msg00040.htmlReflists.opensuse.org/opensuse-updates/2016-08/msg00069.htmlRefwww.debian.org/security/2015/dsa-3327Refwww.openwall.com/lists/oss-security/2015/07/06/8Refwww.openwall.com/lists/oss-security/2015/07/09/12Refwww.openwall.com/lists/oss-security/2015/07/10/2Refwww.openwall.com/lists/oss-security/2015/07/17/14Refwww.securityfocus.com/bid/75553

How CyberStrike helps

Frequently asked questions

What is CVE-2015-5400?

CVE-2015-5400 is a medium-severity vulnerability affecting fedoraproject fedora. It was published on September 28, 2015 and has a CVSS 2.0 base score of 6.8 (MEDIUM).

How severe is CVE-2015-5400?

This vulnerability has a CVSS 2.0 base score of 6.8, 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-2015-5400?

Check the references section for vendor advisories and patches from fedoraproject. Update fedora 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-2015-5400?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2015-5400 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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