GnuTLS before 3.1.0 does not verify that the RSA PKCS #1 signature algorithm matches the signature algorithm in the certificate, which allows remote attackers to conduct downgrade attacks via unspecified vectors.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade gnutls26 | Jul 30, 2024 | Mar 24, 2015 |
| F5 Big Ip | — | Update F5 BIG-IP to the latest version | Jun 17, 2026 | Sep 28, 2015 |
| Oracle Solaris | — | Upgrade entire/ to version 11.4-11.4.0.0.1.15.0 on Solaris 11.4 | Oct 19, 2018 | Mar 24, 2015 |
| Oracle_linux | — | Upgrade gnutlsUpgrade gnutls-utilsUpgrade gnutls-develUpgrade gnutls-guile | Oct 16, 2024 | Mar 24, 2015 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Mar 11, 2015 |
| Suse | — | Upgrade libgnutls-extra26Upgrade libgnutls26-32bitUpgrade libgnutls-develUpgrade libgnutls-extra-develUpgrade libgnutls26-x86Upgrade gnutlsUpgrade libgnutls26 | Dec 18, 2015 | Mar 24, 2015 |
| Ubuntu | — | Upgrade libgnutls26Upgrade libgnutls-deb0-28 | Nov 8, 2024 | Mar 24, 2015 |
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