CVE-2023-0361
moderate-risk
Published 2023-02-15
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.
Do I need to act?
~
3.6% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.4/10
High
NETWORK
/ HIGH complexity
Affected Products (10)
Converged Systems Advisor Agent
Affected Vendors
References (18)
Third Party Advisory
https://access.redhat.com/security/cve/CVE-2023-0361
Issue Tracking
https://github.com/tlsfuzzer/tlsfuzzer/pull/679
Third Party Advisory
https://security.netapp.com/advisory/ntap-20230324-0005/
Third Party Advisory
https://access.redhat.com/security/cve/CVE-2023-0361
Issue Tracking
https://github.com/tlsfuzzer/tlsfuzzer/pull/679
Third Party Advisory
https://security.netapp.com/advisory/ntap-20230324-0005/
45
/ 100
moderate-risk
Severity
22/34 · High
Exploitability
7/34 · Low
Exposure
16/34 · Moderate