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CVE-2016-7966

7.3 · HIGH

Through a malicious URL that contained a quote character it was possible to inject HTML code in KMail's plaintext viewer.

Published Dec 23, 2016CWE-94EPSS 2.34%

Overview

CVE-2016-7966 is a high-severity vulnerability. It was published on December 23, 2016 and has a CVSS 3.0 base score of 7.3 (HIGH).

This vulnerability has a CVSS 3.0 base score of 7.3, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Through a malicious URL that contained a quote character it was possible to inject HTML code in KMail's plaintext viewer. Due to the parser used on the URL it was not possible to include the equal sign (=) or a space into the injected HTML, which greatly reduces the available HTML functionality. Although it is possible to include an HTML comment indicator to hide content.

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

Reflists.opensuse.org/opensuse-updates/2016-10/msg00065.htmlRefwww.debian.org/security/2016/dsa-3697Refwww.openwall.com/lists/oss-security/2016/10/05/1Refwww.securityfocus.com/bid/93360Reflists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QNMM5TVPTJQFPJ3YDF4DPXDFW3GQLWLY/Reflists.opensuse.org/opensuse-updates/2016-10/msg00065.htmlRefwww.debian.org/security/2016/dsa-3697Refwww.openwall.com/lists/oss-security/2016/10/05/1Refwww.securityfocus.com/bid/93360Reflists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QNMM5TVPTJQFPJ3YDF4DPXDFW3GQLWLY/

How CyberStrike helps

Frequently asked questions

What is CVE-2016-7966?

CVE-2016-7966 is a high-severity vulnerability. It was published on December 23, 2016 and has a CVSS 3.0 base score of 7.3 (HIGH).

How severe is CVE-2016-7966?

This vulnerability has a CVSS 3.0 base score of 7.3, 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-2016-7966?

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-2016-7966?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2016-7966 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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