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.
CVSS Details
- CVSS 3.1 Base Score: 7.4
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade gnutls-daneUpgrade gnutls-c++Upgrade gnutlsUpgrade gnutls-utilsUpgrade gnutls-devel | Mar 14, 2023 | Feb 15, 2023 |
| Alpine Linux | — | Upgrade gnutls | Mar 26, 2024 | Feb 15, 2023 |
| Amazon_linux_2023 | — | Upgrade gnutlsUpgrade gnutls-c++-debuginfoUpgrade gnutls-c++Upgrade gnutls-utilsUpgrade gnutls-develUpgrade gnutls-debuginfoUpgrade gnutls-debugsourceUpgrade gnutls-daneUpgrade gnutls-utils-debuginfoUpgrade gnutls-dane-debuginfo | Feb 17, 2025 | Feb 14, 2023 |
| Centos_linux | — | Upgrade gnutls-c++-debuginfoUpgrade gnutls-daneUpgrade gnutls-develUpgrade gnutls-dane-debuginfoUpgrade gnutls-c++Upgrade gnutls-utilsUpgrade gnutls-debuginfoUpgrade gnutlsUpgrade gnutls-debugsourceUpgrade gnutls-utils-debuginfo | Mar 9, 2023 | Feb 15, 2023 |
| Debian | — | Upgrade gnutls28 | Feb 16, 2023 | Feb 16, 2023 |
| Freebsd | — | Upgrade mysql-server57Upgrade mysql-client80Upgrade mysql-client57Upgrade mysql-connector-c++Upgrade gnutlsUpgrade mysql-server80 | Aug 17, 2023 | Aug 17, 2023 |
| Gentoo Linux | — | Upgrade net-libs/gnutls. | Jul 2, 2025 | Feb 15, 2023 |
| Huawei Euleros 2_0_sp10 | — | Upgrade gnutls-utilsUpgrade gnutls | May 18, 2023 | Feb 15, 2023 |
| Huawei Euleros 2_0_sp11 | — | Upgrade gnutls-utilsUpgrade gnutls | Jul 5, 2023 | Feb 15, 2023 |
| Huawei Euleros 2_0_sp9 | — | Upgrade gnutls-utilsUpgrade gnutls | May 10, 2023 | Feb 15, 2023 |
| Nutanix Ahv | — | Upgrade Nutanix AHV to the latest version | Jun 5, 2026 | Sep 4, 2023 |
| Oracle_linux | — | Upgrade gnutlsUpgrade gnutls-daneUpgrade gnutls-utilsUpgrade gnutls-develUpgrade gnutls-c++ | Mar 8, 2023 | Feb 14, 2023 |
| Redhat_linux | — | No solution existsUpgrade gnutls-dane-debuginfoUpgrade gnutls-c++-debuginfoUpgrade gnutls-c++Upgrade gnutlsUpgrade gnutls-utilsUpgrade gnutls-develUpgrade gnutls-daneUpgrade gnutls-debugsourceUpgrade gnutls-utils-debuginfoUpgrade gnutls-debuginfo | Mar 9, 2023 | Feb 15, 2023 |
| Rocky_linux | — | Upgrade gnutls-c++-debuginfoUpgrade gnutls-c++Upgrade gnutls-debugsourceUpgrade gnutls-utilsUpgrade gnutls-utils-debuginfoUpgrade gnutlsUpgrade gnutls-debuginfoUpgrade gnutls-dane-debuginfoUpgrade gnutls-develUpgrade gnutls-dane | Mar 12, 2024 | Feb 15, 2023 |
| Suse | — | Upgrade libgnutls-develUpgrade libgnutls30-32bitUpgrade libgnutlsxx-develUpgrade libgnutlsxx28Upgrade libgnutls30-hmacUpgrade gnutlsUpgrade gnutls-guileUpgrade libgnutls30Upgrade libgnutls-devel-32bitUpgrade libgnutls30-hmac-32bit | Feb 23, 2023 | Feb 15, 2023 |
| Ubuntu | — | Upgrade libgnutls30 | Mar 22, 2023 | Feb 15, 2023 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jan 20, 2025 | Feb 15, 2023 |
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