USN-3850-1: NSS vulnerabilities

  • USN-3850-1: NSS vulnerabilities

    Ubuntu Security Notices wrote:

    nss vulnerabilities

    A security issue affects these releases of Ubuntu and its derivatives:

    • Ubuntu 18.10
    • Ubuntu 18.04 LTS
    • Ubuntu 16.04 LTS
    • Ubuntu 14.04 LTS

    Summary

    Several security issues were fixed in NSS.

    Software Description

    • nss - Network Security Service library

    Details

    Keegan Ryan discovered that NSS incorrectly handled ECDSA key generation. A local attacker could possibly use this issue to perform a cache-timing attack and recover private ECDSA keys. (CVE-2018-0495)

    It was discovered that NSS incorrectly handled certain v2-compatible ClientHello messages. A remote attacker could possibly use this issue to perform a replay attack. (CVE-2018-12384)

    It was discovered that NSS incorrectly handled certain padding oracles. A remote attacker could possibly use this issue to perform a variant of the Bleichenbacher attack. (CVE-2018-12404)

    Update instructions

    The problem can be corrected by updating your system to the following package versions:

    Ubuntu 18.10
    libnss3 - 2:3.36.1-1ubuntu1.1
    Ubuntu 18.04 LTS
    libnss3 - 2:3.35-2ubuntu2.1
    Ubuntu 16.04 LTS
    libnss3 - 2:3.28.4-0ubuntu0.16.04.4
    Ubuntu 14.04 LTS
    libnss3 - 2:3.28.4-0ubuntu0.14.04.4

    To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

    After a standard system update you need to restart any applications that use NSS, such as Evolution, to make all the necessary changes.

    References

    Source: usn.ubuntu.com/3850-1/