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-develUpgrade gnutls-utilsUpgrade gnutls-daneUpgrade gnutls-c++Upgrade gnutls | Mar 14, 2023 | Feb 15, 2023 |
| Alpine Linux | — | Upgrade gnutls | Mar 26, 2024 | Feb 15, 2023 |
| Amazon_linux_2023 | — | Upgrade gnutls-utils-debuginfoUpgrade gnutls-develUpgrade gnutls-daneUpgrade gnutlsUpgrade gnutls-c++Upgrade gnutls-debuginfoUpgrade gnutls-debugsourceUpgrade gnutls-utilsUpgrade gnutls-c++-debuginfoUpgrade gnutls-dane-debuginfo | Feb 17, 2025 | Feb 14, 2023 |
| Centos_linux | — | Upgrade gnutlsUpgrade gnutls-utilsUpgrade gnutls-debuginfoUpgrade gnutls-debugsourceUpgrade gnutls-utils-debuginfoUpgrade gnutls-c++Upgrade gnutls-develUpgrade gnutls-dane-debuginfoUpgrade gnutls-c++-debuginfoUpgrade gnutls-dane | Mar 9, 2023 | Feb 15, 2023 |
| Debian | — | Upgrade gnutls28 | Feb 16, 2023 | Feb 16, 2023 |
| Freebsd | — | Upgrade gnutlsUpgrade mysql-connector-c++Upgrade mysql-server80Upgrade mysql-client57Upgrade mysql-client80Upgrade mysql-server57 | Aug 17, 2023 | Aug 17, 2023 |
| Gentoo Linux | — | Upgrade net-libs/gnutls. | Jul 2, 2025 | Feb 15, 2023 |
| Huawei Euleros 2_0_sp10 | — | Upgrade gnutlsUpgrade gnutls-utils | May 18, 2023 | Feb 15, 2023 |
| Huawei Euleros 2_0_sp11 | — | Upgrade gnutlsUpgrade gnutls-utils | 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 gnutls-c++Upgrade gnutls-develUpgrade gnutls-daneUpgrade gnutlsUpgrade gnutls-utils | Mar 8, 2023 | Feb 14, 2023 |
| Redhat_linux | — | Upgrade gnutls-develUpgrade gnutls-utilsUpgrade gnutls-c++Upgrade gnutls-debuginfoUpgrade gnutlsUpgrade gnutls-debugsourceUpgrade gnutls-utils-debuginfoUpgrade gnutls-c++-debuginfoUpgrade gnutls-daneUpgrade gnutls-dane-debuginfoNo solution exists | Mar 9, 2023 | Feb 15, 2023 |
| Rocky_linux | — | Upgrade gnutls-utilsUpgrade gnutlsUpgrade gnutls-debuginfoUpgrade gnutls-c++Upgrade gnutls-utils-debuginfoUpgrade gnutls-c++-debuginfoUpgrade gnutls-debugsourceUpgrade gnutls-develUpgrade gnutls-dane-debuginfoUpgrade gnutls-dane | Mar 12, 2024 | Feb 15, 2023 |
| Suse | — | Upgrade gnutlsUpgrade libgnutls30Upgrade libgnutls-devel-32bitUpgrade gnutls-guileUpgrade libgnutls30-hmac-32bitUpgrade libgnutls30-32bitUpgrade libgnutlsxx28Upgrade libgnutls30-hmacUpgrade libgnutls-develUpgrade libgnutlsxx-devel | 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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