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CVE-2015-7974

7.7 · HIGH

NTP 4.x before 4.2.8p6 and 4.3.x before 4.3.90 do not verify peer associations of symmetric keys when authenticating packets, which might allow remote attackers to conduct impersonation attacks via…

Published Jan 26, 2016CWE-287EPSS 5.66%

Overview

CVE-2015-7974 is a high-severity vulnerability. It was published on January 26, 2016 and has a CVSS 3.1 base score of 7.7 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.7, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

NTP 4.x before 4.2.8p6 and 4.3.x before 4.3.90 do not verify peer associations of symmetric keys when authenticating packets, which might allow remote attackers to conduct impersonation attacks via an arbitrary trusted key, aka a "skeleton key."

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

Refbugs.ntp.org/show_bug.cgi?id=2936Refrhn.redhat.com/errata/RHSA-2016-2583.htmlRefsupport.ntp.org/bin/view/Main/NtpBug2936Refwww.debian.org/security/2016/dsa-3629Refwww.securityfocus.com/bid/81960Refwww.securitytracker.com/id/1034782Refwww.talosintel.com/reports/TALOS-2016-0071/Refcert-portal.siemens.com/productcert/pdf/ssa-497656.pdfRefh20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03750en_usRefh20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03766en_us

How CyberStrike helps

Frequently asked questions

What is CVE-2015-7974?

CVE-2015-7974 is a high-severity vulnerability. It was published on January 26, 2016 and has a CVSS 3.1 base score of 7.7 (HIGH).

How severe is CVE-2015-7974?

This vulnerability has a CVSS 3.1 base score of 7.7, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2015-7974?

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-2015-7974?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2015-7974 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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