USN-6727-1

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    USN-6727-1

    Published: 10 Apr 2024Last Modified: 27 Apr 2026

    Summary: nss vulnerabilities

    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 (CVE-2023-6135) The NSS package contained outdated CA certificates.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.

    References: https://ubuntu.com/security/notices/USN-6727-1, https://ubuntu.com/security/CVE-2023-4421, https://ubuntu.com/security/CVE-2023-5388, https://ubuntu.com/security/CVE-2023-6135

    Affected packages

    Package

    Name: nss

    Purl: pkg:deb/ubuntu/nss@2:3.98-0ubuntu0.20.04.1?arch=source&distro=focal

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -2:3.98-0ubuntu0.20.04.1

    Affected versions

    2:3.45-1ubuntu2

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    USN-6727-1 | CVE-DB