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Privileges Required
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CVE-2017-8932

Disclosure Date: July 06, 2017
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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.

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CVSS V3 Severity and Metrics
Base Score:
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Impact Score:
Unknown
Exploitability Score:
Unknown
Vector:
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Attack Vector (AV):
Unknown
Attack Complexity (AC):
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Privileges Required (PR):
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User Interaction (UI):
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Scope (S):
Unknown
Confidentiality (C):
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Integrity (I):
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Availability (A):
Unknown

General Information

Vendors

  • fedoraproject,
  • golang,
  • novell,
  • opensuse

Products

  • fedora 25,
  • go,
  • go 1.8,
  • go 1.8.1,
  • leap 42.2,
  • suse package hub for suse linux enterprise 12
Technical Analysis