========================================================================== Ubuntu Security Notice USN-6727-1 April 10, 2024
nss vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 23.10 - Ubuntu 22.04 LTS - Ubuntu 20.04 LTS Summary: Several security issues were fixed in NSS. Software Description: - nss: Network Security Service library 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 (CVE-2023-6135) The NSS package contained outdated CA certificates.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 23.10: libnss3 2:3.98-0ubuntu0.23.10.1 Ubuntu 22.04 LTS: libnss3 2:3.98-0ubuntu0.22.04.1 Ubuntu 20.04 LTS: libnss3 2:3.98-0ubuntu0.20.04.1 This update uses a new upstream release, which includes additional bug fixes. In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-6727-1 CVE-2023-4421, CVE-2023-5388, CVE-2023-6135 Package Information: https://launchpad.net/ubuntu/+source/nss/2:3.98-0ubuntu0.23.10.1 https://launchpad.net/ubuntu/+source/nss/2:3.98-0ubuntu0.22.04.1 https://launchpad.net/ubuntu/+source/nss/2:3.98-0ubuntu0.20.04.1
OpenPGP_signature.asc
Description: OpenPGP digital signature
