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CVE-2017-8932

Status Candidate

Overview

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.

Related Files

Red Hat Security Advisory 2017-1859-01
Posted Aug 2, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-1859-01 - The golang packages provide the Go programming language compiler. The following packages have been upgraded to a later upstream version: golang. Security Fix: A carry propagation flaw was found in the implementation of the P-256 elliptic curve in golang. An attacker could possibly use this flaw to extract private keys when static ECDH was used.

tags | advisory
systems | linux, redhat
advisories | CVE-2017-8932
SHA-256 | 1ae7261e74672e7b3eda2472677d84ff08ffc3d75f37e553122339a25f11e6ef
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