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CVE-2017-8932

5.9 · MEDIUM

A bug in the standard library ScalarMult implementation of curve P-256 for amd64 architectures in Go before 1.7.6 and 1.8.x before 1.8.2 causes incorrect results to be generated for specific input…

Published Jul 6, 2017CWE-682EPSS 2.23%

Overview

CVE-2017-8932 is a medium-severity vulnerability. It was published on July 6, 2017 and has a CVSS 3.0 base score of 5.9 (MEDIUM).

This vulnerability has a CVSS 3.0 base score of 5.9, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

A bug in the standard library ScalarMult implementation of curve P-256 for amd64 architectures in Go before 1.7.6 and 1.8.x before 1.8.2 causes incorrect results to be generated for specific input points. An adaptive attack can be mounted to progressively extract the scalar input to ScalarMult by submitting crafted points and observing failures to the derive correct output. This leads to a full key recovery attack against static ECDH, as used in popular JWT libraries.

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/2017-06/msg00079.htmlReflists.opensuse.org/opensuse-updates/2017-06/msg00080.htmlRefaccess.redhat.com/errata/RHSA-2017:1859Refbugzilla.redhat.com/show_bug.cgi?id=1455191GitHubgithub.com/golang/go/commit/9294fa2749ffee7edbbb817a0ef9fe633136fa9cGitHubgithub.com/golang/go/issues/20040Refgo-review.googlesource.com/c/41070/Refgroups.google.com/d/msg/golang-announce/B5ww0iFt1_Q/TgUFJV14BgAJReflists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LZH4T47ROLZ6YEZBDVXVS2KISTDMXAPS/Reflists.opensuse.org/opensuse-updates/2017-06/msg00079.html

How CyberStrike helps

Frequently asked questions

What is CVE-2017-8932?

CVE-2017-8932 is a medium-severity vulnerability. It was published on July 6, 2017 and has a CVSS 3.0 base score of 5.9 (MEDIUM).

How severe is CVE-2017-8932?

This vulnerability has a CVSS 3.0 base score of 5.9, 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-2017-8932?

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-2017-8932?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2017-8932 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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