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CVE-2016-6302

7.5 · HIGH

The tls_decrypt_ticket function in ssl/t1_lib.c in OpenSSL before 1.1.0 does not consider the HMAC size during validation of the ticket length, which allows remote attackers to cause a denial of se…

Published Sep 16, 2016CWE-20EPSS 27.81%

Overview

CVE-2016-6302 is a high-severity vulnerability. It was published on September 16, 2016 and has a CVSS 3.0 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.0 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

The tls_decrypt_ticket function in ssl/t1_lib.c in OpenSSL before 1.1.0 does not consider the HMAC size during validation of the ticket length, which allows remote attackers to cause a denial of service via a ticket that is too short.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. 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.

References

Refkb.juniper.net/InfoCenter/index?page=content&id=JSA10759Refrhn.redhat.com/errata/RHSA-2016-1940.htmlRefwww-01.ibm.com/support/docview.wss?uid=swg21995039Refwww.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.htmlRefwww.oracle.com/technetwork/security-advisory/cpujan2018-3236628.htmlRefwww.oracle.com/technetwork/security-advisory/cpujul2017-3236622.htmlRefwww.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.htmlRefwww.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.htmlRefwww.oracle.com/technetwork/topics/security/bulletinoct2016-3090566.htmlRefwww.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.html

How CyberStrike helps

Frequently asked questions

What is CVE-2016-6302?

CVE-2016-6302 is a high-severity vulnerability. It was published on September 16, 2016 and has a CVSS 3.0 base score of 7.5 (HIGH).

How severe is CVE-2016-6302?

This vulnerability has a CVSS 3.0 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-2016-6302?

Check the references section for vendor advisories, patches, and mitigation guidance. 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-2016-6302?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2016-6302 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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