• [gentoo-announce] [ GLSA 202107-11 ] OpenDoas: Insufficient environment

    From Sam James@21:1/5 to All on Wed Jul 7 10:10:01 2021
    - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
    Gentoo Linux Security Advisory GLSA 202107-11
    - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
    https://security.gentoo.org/
    - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

    Severity: Normal
    Title: OpenDoas: Insufficient environment filtering
    Date: July 07, 2021
    Bugs: #767781
    ID: 202107-11

    - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

    Synopsis
    ========

    A vulnerability in OpenDoas could lead to privilege escalation.

    Background
    ==========

    OpenDoas allows users to run commands as other users.

    Affected packages
    =================

    -------------------------------------------------------------------
    Package / Vulnerable / Unaffected
    -------------------------------------------------------------------
    1 app-admin/doas < 6.8.1 >= 6.8.1

    Description
    ===========

    OpenDoas does not properly filter the PATH variable from the resulting
    shell after escalating privileges.

    Impact
    ======

    A local attacker with control of a user's PATH variable could escalate privileges if that user uses OpenDoas with a poisoned PATH variable.

    Workaround
    ==========

    There is no known workaround at this time.

    Resolution
    ==========

    All OpenDoas users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=app-admin/doas-6.8.1"

    References
    ==========

    [ 1 ] CVE-2019-25016
    https://nvd.nist.gov/vuln/detail/CVE-2019-25016

    Availability
    ============

    This GLSA and any updates to it are available for viewing at
    the Gentoo Security Website:

    https://security.gentoo.org/glsa/202107-11

    Concerns?
    =========

    Security is a primary focus of Gentoo Linux and ensuring the
    confidentiality and security of our users' machines is of utmost
    importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.

    License
    =======

    Copyright 2021 Gentoo Foundation, Inc; referenced text
    belongs to its owner(s).

    The contents of this document are licensed under the
    Creative Commons - Attribution / Share Alike license.

    https://creativecommons.org/licenses/by-sa/2.5


    -----BEGIN PGP SIGNATURE-----

    iQGTBAEBCgB9FiEEYOpPv/uDUzOcqtTy9JIoEO6gSDsFAmDlX3xfFIAAAAAALgAo aXNzdWVyLWZwckBub3RhdGlvbnMub3BlbnBncC5maWZ0aGhvcnNlbWFuLm5ldDYw RUE0RkJGRkI4MzUzMzM5Q0FBRDRGMkY0OTIyODEwRUVBMDQ4M0IACgkQ9JIoEO6g SDsUmAf9HijRpkey4st6j/nsq28lUaLPySfSbRy4cPzLxQK12eFVny3xsogxETpF jc2YXcMen0vEVQwsRuPNqb3gDXWGkkjKaZjDafG+UvAPEDDVmS9WxOGCJHuRghzr ZRgT9Dik+KVIiO5v2gED5Qd0NF9w4CuNxZJAlHnZvxuXoHQKnCaz7+V5WxYc99TM KLiCasMguXldYkrBVYUU7EKRJPGcD+Nzw703jR1gNQGbuDWIXRVgHkGGYAeE8b79 +0rracL3UoBLPkv6MxnvYjZDkMuwtJJIyUs+pdbVpHXFU4dMDXHXLIMuPCTKsD/w NUJ/Ak3rh+5j4ZcxzK7vnUZA3gHWpQ==
    =YvgT
    -----END PGP SIGNATURE-----

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)