Vulnerability Details : 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.
Products affected by CVE-2017-8932
- cpe:2.3:a:novell:suse_package_hub_for_suse_linux_enterprise:12:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:25:*:*:*:*:*:*:*
- cpe:2.3:o:opensuse:leap:42.2:*:*:*:*:*:*:*
- cpe:2.3:a:golang:go:*:*:*:*:*:*:*:*
- cpe:2.3:a:golang:go:1.8.1:*:*:*:*:*:*:*
- cpe:2.3:a:golang:go:1.8:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2017-8932
0.61%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 78 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2017-8932
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.3
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:N/A:N |
8.6
|
2.9
|
NIST | |
|
5.9
|
MEDIUM | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N |
2.2
|
3.6
|
NIST |
CWE ids for CVE-2017-8932
-
The product performs a calculation that generates incorrect or unintended results that are later used in security-critical decisions or resource management.Assigned by: nvd@nist.gov (Primary)
References for CVE-2017-8932
-
http://lists.opensuse.org/opensuse-updates/2017-06/msg00079.html
openSUSE-SU-2017:1649-1: moderate: Security update for goPatch;Third Party Advisory
-
https://github.com/golang/go/issues/20040
crypto/elliptic: carry bug in x86-64 P-256 · Issue #20040 · golang/go · GitHubThird Party Advisory
-
https://groups.google.com/d/msg/golang-announce/B5ww0iFt1_Q/TgUFJV14BgAJ
[security] Go 1.7.6 and Go 1.8.2 are released - Google GroepenVendor Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LZH4T47ROLZ6YEZBDVXVS2KISTDMXAPS/
[SECURITY] Fedora 25 Update: golang-1.7.6-1.fc25 - package-announce - Fedora Mailing-ListsThird Party Advisory
-
https://bugzilla.redhat.com/show_bug.cgi?id=1455191
1455191 – CVE-2017-8932 golang: Elliptic curvers carry propagation issue in x86-64 P-256 [fedora-all]Issue Tracking;Third Party Advisory
-
https://access.redhat.com/errata/RHSA-2017:1859
RHSA-2017:1859 - Security Advisory - Red Hat Customer Portal
-
https://github.com/golang/go/commit/9294fa2749ffee7edbbb817a0ef9fe633136fa9c
crypto/elliptic: fix carry bug in x86-64 P-256 implementation. · golang/go@9294fa2 · GitHubIssue Tracking;Patch;Third Party Advisory
-
http://lists.opensuse.org/opensuse-updates/2017-06/msg00080.html
openSUSE-SU-2017:1650-1: moderate: Security update for goPatch;Third Party Advisory
-
https://go-review.googlesource.com/c/41070/
Vendor Advisory
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