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    Ubuntu 4552-3: Pam-python regression

    Date 28 Oct 2020
    Posted By LinuxSecurity Advisories
    USN-4552-1 and USN-4552-2 introduced a regression in Pam-python
    Ubuntu Security Notice USN-4552-3
    October 28, 2020
    pam-python regression
    A security issue affects these releases of Ubuntu and its derivatives:
    - Ubuntu 18.04 LTS
    - Ubuntu 16.04 LTS
    USN-4552-1 and USN-4552-2 introduced a regression in Pam-python
    Software Description:
    - pam-python: Enables PAM modules to be written in Python
    USN-4552-1 and USN-4552-2 fixed a vulnerability in Pam-python. The update
    introduced a regression which prevented PAM modules written in Python from
    importing python modules from site-specific directories.
    We apologize for the inconvenience.
    Original advisory details:
     Malte Kraus discovered that Pam-python mishandled certain environment variables.
     A local attacker could potentially use this vulnerability to execute programs
     as root.
    Update instructions:
    The problem can be corrected by updating your system to the following
    package versions:
    Ubuntu 18.04 LTS:
      libpam-python                   1.0.6-1.1+deb10u1ubuntu0.1
    Ubuntu 16.04 LTS:
      libpam-python                   1.0.4-1.1+deb8u1ubuntu0.1
    In general, a standard system update will make all the necessary changes.
    Package Information:

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