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2 vulnerabilities by OpenSSH
CVE-2023-51767 (GCVE-0-2023-51767)
Vulnerability from cvelistv5 – Published: 2023-12-24 00:00 – Updated: 2026-06-02 15:08 Disputed
VLAI
Summary
OpenSSH through 10.0, 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. NOTE: this is applicable to a certain threat model of attacker-victim co-location in which the attacker has user privileges. NOTE: this is disputed by the Supplier, who states "we do not consider it to be the application's responsibility to defend against platform architectural weaknesses."
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- n/a
- NVD-CWE-Other
Assigner
References
34 references
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CVE-2023-25136 (GCVE-0-2023-25136)
Vulnerability from cvelistv5 – Published: 2023-02-03 00:00 – Updated: 2026-05-28 17:43
VLAI
Summary
OpenSSH server (sshd) 9.1 introduced a double-free vulnerability during options.kex_algorithms handling. This is fixed in OpenSSH 9.2. The double free can be leveraged, by an unauthenticated remote attacker in the default configuration, to jump to any location in the sshd address space. One third-party report states "remote code execution is theoretically possible."
Severity
No CVSS data available.
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- n/a
- CWE-415 - Double Free
Assigner
References
16 references
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