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.
Metrics
Affected Vendors & Products
Advisories
| Source | ID | Title |
|---|---|---|
Debian DLA |
DLA-3321-1 | gnutls28 security update |
Debian DSA |
DSA-5349-1 | gnutls28 security update |
EUVD |
EUVD-2023-12422 | 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. |
Ubuntu USN |
USN-5901-1 | GnuTLS vulnerability |
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Wed, 16 Jul 2025 13:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
epss
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epss
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Status: PUBLISHED
Assigner: redhat
Published:
Updated: 2025-03-19T17:45:36.732Z
Reserved: 2023-01-18T00:00:00.000Z
Link: CVE-2023-0361
No data.
Status : Modified
Published: 2023-02-15T18:15:11.683
Modified: 2025-03-19T18:15:18.747
Link: CVE-2023-0361
OpenCVE Enrichment
No data.
Debian DLA
Debian DSA
EUVD
Ubuntu USN