It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2023-186 advisory.

    A NULL pointer dereference was found In libssh during re-keying with algorithm guessing. This issue may     allow an authenticated client to cause a denial of service. (CVE-2023-1667)

    A vulnerability was found in libssh, where the authentication check of the connecting client can be     bypassed in thepki_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.
    (CVE-2023-2283)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Detections

Analytics

Amazon Linux 2023 : libssh, libssh-config, libssh-devel (ALAS2023-2023-186)

medium Nessus Plugin ID 176977

Version 1.4