A Bleichenbacher type side-channel based padding oracle attack was found in the way nettle handles endian conversion of RSA decrypted PKCS#1 v1.5 data. An attacker who is able to run a process on the same physical core as the victim process, could use this flaw extract plaintext or in some cases downgrade any TLS connections to a vulnerable server.
CVSS Details
- CVSS 3.1 Base Score: 5.7
- CVSS 3.1 Vector: (CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:N)
- CVSS 3.0 Base Score: 4.7
- CVSS 3.0 Vector: (CVSS:3.0/AV:P/AC:H/PR:H/UI:N/S:C/C:H/I:N/A:N)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade nettle | Jul 30, 2024 | Dec 3, 2018 |
| F5 Big Ip | — | Update F5 BIG-IP to the latest version | Jun 17, 2026 | Jan 8, 2019 |
| Huawei Euleros 2_0_sp2 | — | Upgrade nettle-develUpgrade nettle | Nov 3, 2020 | Dec 3, 2018 |
| Huawei Euleros 2_0_sp3 | — | Upgrade nettleUpgrade nettle-devel | Sep 28, 2020 | Dec 3, 2018 |
| Huawei Euleros 2_0_sp5 | — | Upgrade nettleUpgrade nettle-devel | Mar 24, 2020 | Dec 3, 2018 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Dec 3, 2018 |
| Suse | — | Upgrade libnettle-develUpgrade nettleUpgrade libnettle6-32bitUpgrade libnettle6Upgrade libhogweed4-32bitUpgrade libnettle-devel-32bitUpgrade libhogweed4 | Dec 23, 2018 | Dec 3, 2018 |
| Ubuntu | — | Upgrade libnettle7Upgrade libnettle8Upgrade libnettle6 | Jun 18, 2021 | Dec 3, 2018 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jan 20, 2025 | Dec 3, 2018 |
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