USN-2821-1

    Dashboard / Vulnerabilities / USN-2821-1

    USN-2821-1

    Published: 30 Nov 2015Last Modified: 22 Apr 2026

    Summary: gnutls26 vulnerability

    Details: It was discovered that GnuTLS incorrectly validated the first byte of padding in CBC modes. A remote attacker could possibly use this issue to perform a padding oracle attack.

    References: https://ubuntu.com/security/notices/USN-2821-1, https://launchpad.net/bugs/1510163

    Affected packages

    Package

    Name: gnutls26

    Purl: pkg:deb/ubuntu/[email protected]?arch=source&distro=trusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -2.12.23-12ubuntu2.3

    Affected versions

    2.12.23-1ubuntu4
    2.12.23-1ubuntu5
    2.12.23-12ubuntu1
    2.12.23-12ubuntu2
    2.12.23-12ubuntu2.1
    2.12.23-12ubuntu2.2

    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