7.4
High
CVE-2023-0361 A timing side-channel in the handling of RSA ClientKeyExchange messages was discovered in GnuTLS
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.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| gnutls | Versions not published | |
| SIMATIC S7-1500 CPU 1518-4 PN/DP MFP 3.1 | 3.1.0 → < 3.1.5 | 3.1.5 |
| SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP 3.1 | 3.1.0 → < 3.1.5 | 3.1.5 |
| SIPLUS S7-1500 CPU 1518-4 PN/DP MFP 3.1 | 3.1.0 → < 3.1.5 | 3.1.5 |
References
- access.redhat.com access.redhat.com
- github.com github.com
- gitlab.com gitlab.com
- [debian-lts-announce] 20230218 [SECURITY] [DLA 3321-1] gnutls28 security update lists.debian.org
- FEDORA-2023-1c4a6a47ae lists.fedoraproject.org
- FEDORA-2023-5b378b82b3 lists.fedoraproject.org
- FEDORA-2023-4fc4c33f2b lists.fedoraproject.org
- security.netapp.com security.netapp.com
- security.netapp.com security.netapp.com
Timeline
- Published
- Last modified