A timing side-channel in the handling of RSA ClientKeyExchange messages was discovered in GnuTLS. This side-channel can be sufficient to recover the key encrypted in the RSA ciphertext across a network in a Bleichenbacher style attack. To achieve a successful decryption the attacker would need to send a large amount of specially crafted messages to the vulnerable server. By recovering the secret from the ClientKeyExchange message, the attacker would be able to decrypt the application data exchanged over that connection.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published: 2023-02-15T00:00:00

Updated: 2024-08-02T05:10:55.597Z

Reserved: 2023-01-18T00:00:00

Link: CVE-2023-0361

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2023-02-15T18:15:11.683

Modified: 2024-11-21T07:37:02.870

Link: CVE-2023-0361

cve-icon Redhat

Severity : Moderate

Publid Date: 2023-02-14T00:00:00Z

Links: CVE-2023-0361 - Bugzilla