What’s Vulnerable › Vulnerabilities

CVE-2017-8932

• Severity: medium (CVSS 5.9 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2017-07-06 · updated 2026-06-17
• Weakness: CWE-682

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.

Affected products

• Fedoraproject Fedora: 25
• Go: through 1.7.5; 1.8, 1.8.1
• Novell Suse Package Hub For Suse Linux Enterprise: 12
• openSUSE Leap: 42.2

References

• http://lists.opensuse.org/opensuse-updates/2017-06/msg00079.html
• http://lists.opensuse.org/opensuse-updates/2017-06/msg00080.html
• https://access.redhat.com/errata/RHSA-2017:1859
• https://bugzilla.redhat.com/show_bug.cgi?id=1455191
• https://github.com/golang/go/commit/9294fa2749ffee7edbbb817a0ef9fe633136fa9c
• https://github.com/golang/go/issues/20040
• https://go-review.googlesource.com/c/41070/
• https://groups.google.com/d/msg/golang-announce/B5ww0iFt1_Q/TgUFJV14BgAJ
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LZH4T47ROLZ6YEZBDVXVS2KISTDMXAPS/
• http://lists.opensuse.org/opensuse-updates/2017-06/msg00079.html
• http://lists.opensuse.org/opensuse-updates/2017-06/msg00080.html
• https://access.redhat.com/errata/RHSA-2017:1859

Get alerted when CVE-2017-8932 or the next vulnerability affects your stack