| パッケージ | 影響を受けるバージョン | 修正済みバージョン |
|---|---|---|
| libssh | ≥ 0.10.0, ≤ 0.10.4≥ 0.9.1, ≤ 0.9.6 |
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.
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