QID 38919

Date Published: 2024-02-15

QID 38919: OpenSSH Authentication Bypass Vulnerability

OpenSSH is a set of computer programs providing encrypted communication sessions over a computer network using the SSH protocol.

In OpenSSH, when common types of DRAM are used, might allow row hammer attacks (for authentication bypass) because the integer value of authenticated in mm_answer_authpassword does not resist flips of a single bit.

Affected Versions:
OpenSSH up to version 9.6

QID Detection Logic:
This unauthenticated detection works by reviewing the version of the OpenSSH service.

Successful exploitation allows OS command injection and row hammer attacks for authentication bypass.

  • CVSS V3 rated as High - 7 severity.
  • CVSS V2 rated as Low - 0 severity.
    • Solution
    Customers are advised to upgrade to OpenSSH 9.6p1 or later to remediate this vulnerability.
    Vendor References

    CVEs related to QID 38919

    CVE-2023-51767 |
    Software Advisories
    Advisory ID Software Component Link
    OpenSSH 9.6p1 URL Logo www.openssh.com/releasenotes.html#9.6p1
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