Vulnerability Monitor

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CVE-2017-8932

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.

Published

2017-07-06T16:29:00.420

Last Modified

2025-04-20T01:37:25.860

Status

Deferred

Source

[email protected]

Severity

CVSSv3.0: 5.9 (MEDIUM)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:P/I:N/A:N

Access Vector: NETWORK
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: NONE
Availability Impact: NONE

Exploitability Score

8.6

Impact Score

2.9

Weaknesses

Type: Primary
CWE-682

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	golang	go	≤ 1.7.5	Yes
Application	golang	go	1.8	Yes
Application	golang	go	1.8.1	Yes
Application	novell	suse_package_hub_for_suse_linux_enterprise	12	Yes
Operating System	fedoraproject	fedora	25	Yes
Operating System	opensuse	leap	42.2	Yes

References

http://lists.opensuse.org/opensuse-updates/2017-06/msg00079.html Patch, Third Party Advisory ([email protected])
http://lists.opensuse.org/opensuse-updates/2017-06/msg00080.html Patch, Third Party Advisory ([email protected])
https://access.redhat.com/errata/RHSA-2017:1859 ([email protected])
https://bugzilla.redhat.com/show_bug.cgi?id=1455191 Issue Tracking, Third Party Advisory ([email protected])
https://github.com/golang/go/commit/9294fa2749ffee7edbbb817a0ef9fe633136fa9c Issue Tracking, Patch, Third Party Advisory ([email protected])
https://github.com/golang/go/issues/20040 Third Party Advisory ([email protected])
https://go-review.googlesource.com/c/41070/ Vendor Advisory ([email protected])
https://groups.google.com/d/msg/golang-announce/B5ww0iFt1_Q/TgUFJV14BgAJ Vendor Advisory ([email protected])
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LZH4T47ROLZ6YEZBDVXVS2KISTDMXAPS/ ([email protected])
http://lists.opensuse.org/opensuse-updates/2017-06/msg00079.html Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-updates/2017-06/msg00080.html Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://access.redhat.com/errata/RHSA-2017:1859 (af854a3a-2127-422b-91ae-364da2661108)
https://bugzilla.redhat.com/show_bug.cgi?id=1455191 Issue Tracking, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/golang/go/commit/9294fa2749ffee7edbbb817a0ef9fe633136fa9c Issue Tracking, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/golang/go/issues/20040 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://go-review.googlesource.com/c/41070/ Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://groups.google.com/d/msg/golang-announce/B5ww0iFt1_Q/TgUFJV14BgAJ Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LZH4T47ROLZ6YEZBDVXVS2KISTDMXAPS/ (af854a3a-2127-422b-91ae-364da2661108)