libhogweed4: A Bleichenbacher type side-channel based padding oracle attack was found in the way nettle handles endian conversion...
CVE-2018-16869 is fixed in 3 products on 1 platform, first by libhogweed4 3.4.1-0ubuntu0.18.04.1, released June 9, 2021. It is not reported as exploited. Patch Radar priority: Routine.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| libhogweed4 · Ubuntu 18.04.6 LTS (bionic) | 3.4.1-0ubuntu0.18.04.1 | libhogweed4 3.4.1-0ubuntu0.18.04.1 | Jun 9, 2021 |
| libnettle6 · Ubuntu 18.04.6 LTS (bionic) | 3.4.1-0ubuntu0.18.04.1 | libnettle6 3.4.1-0ubuntu0.18.04.1 | Jun 9, 2021 |
| nettle-bin · Ubuntu 18.04.6 LTS (bionic) | 3.4.1-0ubuntu0.18.04.1 | nettle-bin 3.4.1-0ubuntu0.18.04.1 | Jun 9, 2021 |
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