vulnerability
Red Hat: CVE-2023-2283: authorization bypass in pki_verify_data_signature (Multiple Advisories)
Severity | CVSS | Published | Added | Modified |
---|---|---|---|---|
6 | (AV:N/AC:L/Au:N/C:P/I:P/A:N) | 2023-05-26 | 2023-06-28 | 2025-01-28 |
Description
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.
Solution(s)

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