Detections
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CVE-2017-8932
medium
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.
References
https://github.com/golang/go/issues/20040
https://github.com/golang/go/commit/9294fa2749ffee7edbbb817a0ef9fe633136fa9c
https://bugzilla.redhat.com/show_bug.cgi?id=1455191
https://access.redhat.com/errata/RHSA-2017:1859
http://lists.opensuse.org/opensuse-updates/2017-06/msg00080.html
http://lists.opensuse.org/opensuse-updates/2017-06/msg00079.html