National Vulnerability Database

National Vulnerability Database

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    Vulnerabilities Detail

CVE-2017-8932 Detail

Current 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.

Source:  MITRE
Description Last Modified:  07/06/2017
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 5.9 MEDIUM
Vector: AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N (V3 legend)
Impact Score: 3.6
Exploitability Score: 2.2

Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): None
Availability (A): None

CVSS v2.0 Severity and Metrics:

Base Score: 4.3 MEDIUM
Vector: (AV:N/AC:M/Au:N/C:P/I:N/A:N) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 8.6

Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (AU): None
Confidentiality (C): Partial
Integrity (I): None
Availability (A): None
Additional Information:
Allows unauthorized disclosure of information

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://lists.opensuse.org/opensuse-updates/2017-06/msg00079.html Patch Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2017-06/msg00080.html Patch Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:1859
https://bugzilla.redhat.com/show_bug.cgi?id=1455191 Issue Tracking Third Party Advisory
https://github.com/golang/go/commit/9294fa2749ffee7edbbb817a0ef9fe633136fa9c Issue Tracking Patch Third Party Advisory
https://github.com/golang/go/issues/20040 Third Party Advisory
https://go-review.googlesource.com/c/41070/ Vendor Advisory
https://groups.google.com/d/msg/golang-announce/B5ww0iFt1_Q/TgUFJV14BgAJ Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LZH4T47ROLZ6YEZBDVXVS2KISTDMXAPS/ Third Party Advisory

Technical Details

Vulnerability Type (View All)

  • Information Leak / Disclosure (CWE-200)
  • Cryptographic Issues (CWE-310)

Change History

3 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2017-8932
NVD Published Date:
07/06/2017
NVD Last Modified:
10/30/2018