A vulnerability was found in libssh, where the authentication check of the connecting client can be bypassed in the`pki_verify_data_signature` function in memory allocation problems. This issue may happen if there is insufficient memory or the memory usage is limited. The problem is caused by the return value `rc,` which is initialized to SSH_ERROR and later rewritten to save the return value of the function call `pki_key_check_hash_compatible.` The value of the variable is not changed between this point and the cryptographic verification. Therefore any error between them calls `goto error` returning SSH_OK.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published: 2023-05-26T00:00:00

Updated: 2024-08-02T06:19:14.319Z

Reserved: 2023-04-25T00:00:00

Link: CVE-2023-2283

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2023-05-26T18:15:13.770

Modified: 2024-02-01T17:15:08.197

Link: CVE-2023-2283

cve-icon Redhat

Severity : Moderate

Publid Date: 2023-05-05T00:00:00Z

Links: CVE-2023-2283 - Bugzilla