Information Exposure

Affecting openssh package, versions <8.3_p1-r1

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Overview

Affected versions of this package are vulnerable to Information Exposure. The client side in OpenSSH 5.7 through 8.3 has an Observable Discrepancy leading to an information leak in the algorithm negotiation. This allows man-in-the-middle attackers to target initial connection attempts (where no host key for the server has been cached by the client).

Remediation

Upgrade openssh to version or higher.

References

CVSS Score

5.9
medium severity
  • Attack Vector
    Network
  • Attack Complexity
    High
  • Privileges Required
    None
  • User Interaction
    None
  • Scope
    Unchanged
  • Confidentiality
    High
  • Integrity
    None
  • Availability
    None
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
CVE
CVE-2020-14145
CWE
CWE-200
Snyk ID
SNYK-ALPINE312-OPENSSH-1051927
Disclosed
29 Jun, 2020
Published
16 Dec, 2020