========================================================================== Ubuntu Security Notice USN-6727-2 April 11, 2024
nss regression ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 22.04 LTS - Ubuntu 20.04 LTS Summary: USN-6727-1 introduced a regression in NSS. Software Description: - nss: Network Security Service library Details: USN-6727-1 fixed vulnerabilities in NSS. The update introduced a regression when trying to load security modules on Ubuntu 20.04 LTS and Ubuntu 22.04 LTS. This update fixes the problem. We apologize for the inconvenience. Original advisory details: It was discovered that NSS incorrectly handled padding when checking PKCS#1 certificates. A remote attacker could possibly use this issue to perform Bleichenbacher-like attacks and recover private data. This issue only affected Ubuntu 20.04 LTS. (CVE-2023-4421) It was discovered that NSS had a timing side-channel when performing RSA decryption. A remote attacker could possibly use this issue to recover private data. (CVE-2023-5388) It was discovered that NSS had a timing side-channel when using certain NIST curves. A remote attacker could possibly use this issue to recover private data. (CVE-2023-6135) The NSS package contained outdated CA certificates. This update refreshes the NSS package to version 3.98 which includes the latest CA certificate bundle and other security improvements. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 22.04 LTS: libnss3 2:3.98-0ubuntu0.22.04.2 Ubuntu 20.04 LTS: libnss3 2:3.98-0ubuntu0.20.04.2 In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-6727-2 https://ubuntu.com/security/notices/USN-6727-1 https://launchpad.net/bugs/2060906 Package Information: https://launchpad.net/ubuntu/+source/nss/2:3.98-0ubuntu0.22.04.2 https://launchpad.net/ubuntu/+source/nss/2:3.98-0ubuntu0.20.04.2
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Description: OpenPGP digital signature
