CVE-2023-0361
CVSS v3
7.4
HIGH
Score EPSS
3.1 %
probabilité d’exploitation
CISA KEV
Non
exploitation connue
Exploitation
—
statut SSVC
Description
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.
Détails techniques
- Publiée le
- 2023-02-15
Questions fréquentes
Qu’est-ce que CVE-2023-0361 ?
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.
CVE-2023-0361 est-elle activement exploitée ?
Aucune exploitation active de CVE-2023-0361 n’est confirmée. Le score EPSS est de 3.1 %, soit la probabilité estimée d’exploitation dans les 30 prochains jours.
Quel est le score CVSS de CVE-2023-0361 ?
CVE-2023-0361 a un score de base CVSS v3 de 7.4 (gravité HIGH).
CVE-2023-0361 touche-t-elle votre environnement ?
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Classées par probabilité d’exploitation (EPSS).