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-c++Upgrade gnutls-utilsUpgrade gnutlsUpgrade gnutls-daneUpgrade gnutls-devel | Mar 14, 2023 | Feb 15, 2023 |
| Alpine Linux | — | Upgrade gnutls | Mar 26, 2024 | Feb 15, 2023 |
| Amazon_linux_2023 | — | Upgrade gnutlsUpgrade gnutls-debuginfoUpgrade gnutls-debugsourceUpgrade gnutls-c++-debuginfoUpgrade gnutls-utilsUpgrade gnutls-utils-debuginfoUpgrade gnutls-c++Upgrade gnutls-develUpgrade gnutls-daneUpgrade gnutls-dane-debuginfo | Feb 17, 2025 | Feb 14, 2023 |
| Centos_linux | — | Upgrade gnutls-c++-debuginfoUpgrade gnutls-dane-debuginfoUpgrade gnutls-develUpgrade gnutls-daneUpgrade gnutls-debugsourceUpgrade gnutls-c++Upgrade gnutls-debuginfoUpgrade gnutlsUpgrade gnutls-utils-debuginfoUpgrade gnutls-utils | Mar 9, 2023 | Feb 15, 2023 |
| Debian | — | Upgrade gnutls28 | Feb 16, 2023 | Feb 16, 2023 |
| Freebsd | — | Upgrade mysql-client80Upgrade mysql-client57Upgrade mysql-server57Upgrade mysql-connector-c++Upgrade mysql-server80Upgrade gnutls | 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 gnutls-c++Upgrade gnutls-daneUpgrade gnutls-utilsUpgrade gnutlsUpgrade gnutls-devel | Mar 8, 2023 | Feb 14, 2023 |
| Redhat_linux | — | Upgrade gnutls-daneUpgrade gnutlsUpgrade gnutls-c++Upgrade gnutls-c++-debuginfoUpgrade gnutls-develUpgrade gnutls-debuginfoUpgrade gnutls-utils-debuginfoUpgrade gnutls-utilsUpgrade gnutls-debugsourceUpgrade gnutls-dane-debuginfoNo solution exists | Mar 9, 2023 | Feb 15, 2023 |
| Rocky_linux | — | Upgrade gnutls-dane-debuginfoUpgrade gnutls-daneUpgrade gnutls-develUpgrade gnutls-utils-debuginfoUpgrade gnutls-debuginfoUpgrade gnutlsUpgrade gnutls-utilsUpgrade gnutls-c++Upgrade gnutls-c++-debuginfoUpgrade gnutls-debugsource | Mar 12, 2024 | Feb 15, 2023 |
| Suse | — | Upgrade libgnutls30-hmacUpgrade libgnutlsxx-develUpgrade libgnutls-develUpgrade libgnutlsxx28Upgrade libgnutls30-32bitUpgrade libgnutls-devel-32bitUpgrade gnutlsUpgrade libgnutls30-hmac-32bitUpgrade libgnutls30Upgrade gnutls-guile | 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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