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CVE-2015-5965

5.0 · MEDIUM

The SSL-VPN feature in Fortinet FortiOS before 4.3.13 only checks the first byte of the TLS MAC in finished messages, which makes it easier for remote attackers to spoof encrypted content via a cra…

Published Aug 11, 2015fortinetCWE-20EPSS 2.09%

Overview

CVE-2015-5965 is a medium-severity vulnerability affecting fortinet fortios. It was published on August 11, 2015 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

The SSL-VPN feature in Fortinet FortiOS before 4.3.13 only checks the first byte of the TLS MAC in finished messages, which makes it easier for remote attackers to spoof encrypted content via a crafted MAC field.

Remediation

Check the references section for vendor advisories and patches from fortinet. Update fortios 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
fortinetfortios0Affected

References

Refwww.fortiguard.com/advisory/FG-IR-15-016/Refwww.securityfocus.com/bid/76065Refwww.securitytracker.com/id/1033256Refsecurity.gentoo.org/glsa/201508-01Refvivaldi.net/en-US/blogs/entry/the-poodle-has-friendsRefwww.fortiguard.com/advisory/FG-IR-15-016/Refwww.securityfocus.com/bid/76065Refwww.securitytracker.com/id/1033256Refsecurity.gentoo.org/glsa/201508-01Refvivaldi.net/en-US/blogs/entry/the-poodle-has-friends

How CyberStrike helps

Frequently asked questions

What is CVE-2015-5965?

CVE-2015-5965 is a medium-severity vulnerability affecting fortinet fortios. It was published on August 11, 2015 and has a CVSS 2.0 base score of 5.0 (MEDIUM).

How severe is CVE-2015-5965?

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-2015-5965?

Check the references section for vendor advisories and patches from fortinet. Update fortios 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-2015-5965?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2015-5965 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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