CVE-2017-8932 | BDVDB-2026-87348 Detail
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.
Impact#
No impact statement in the source data.
Weaknesses#
No weakness recorded in the source data.
References#
- https://groups.google.com/d/msg/golang-announce/B5ww0iFt1_Q/TgUFJV14BgAJ
- https://github.com/golang/go/commit/9294fa2749ffee7edbbb817a0ef9fe633136fa9c
- 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
- https://bugzilla.redhat.com/show_bug.cgi?id=1455191
- https://github.com/golang/go/issues/20040
- https://go-review.googlesource.com/c/41070/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LZH4T47ROLZ6YEZBDVXVS2KISTDMXAPS/
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.