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  • libssh vulnerability

    From bugz_ubuntu@21:4/110 to Ubuntu Users on Tuesday, December 10, 2019 16:10:03
    libssh vulnerability

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

    * Ubuntu 19.10
    * Ubuntu 19.04
    * Ubuntu 18.04 LTS
    * Ubuntu 16.04 LTS

    Summary

    libssh could be made to run programs under certain conditions.

    Software Description

    * libssh - A tiny C SSH library

    Details

    It was discovered that libssh incorrectly handled certain scp
    commands. If a user or automated system were tricked into using a
    specially-crafted scp command, a remote attacker could execute
    arbitrary commands on the server.

    Update instructions

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

    Ubuntu 19.10
    libssh-4 - 0.9.0-1ubuntu1.3

    Ubuntu 19.04
    libssh-4 - 0.8.6-3ubuntu0.3

    Ubuntu 18.04 LTS
    libssh-4 - 0.8.0~20170825.94fa1e38-1ubuntu0.5

    Ubuntu 16.04 LTS
    libssh-4 - 0.6.3-4.3ubuntu0.5

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

    In general, a standard system update will make all the necessary
    changes.

    References

    * CVE-2019-14889

    --- Mystic BBS v1.12 A43 (Linux/64)
    * Origin: BZ&BZ BBS (21:4/110)
  • From bugz_ubuntu@21:4/110 to Ubuntu Users on Thursday, April 09, 2020 12:10:07
    libssh vulnerability

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

    * Ubuntu 19.10
    * Ubuntu 18.04 LTS

    Summary

    libssh could be made to crash if it received specially crafted
    network traffic.

    Software Description

    * libssh - A tiny C SSH library

    Details

    Yasheng Yang discovered that libssh incorrectly handled AES-CTR
    ciphers. A remote attacker could possibly use this issue to cause
    libssh to crash, resulting in a denial of service.

    Update instructions

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

    Ubuntu 19.10
    libssh-4 - 0.9.0-1ubuntu1.4

    Ubuntu 18.04 LTS
    libssh-4 - 0.8.0~20170825.94fa1e38-1ubuntu0.6

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

    In general, a standard system update will make all the necessary
    changes.

    References

    * CVE-2020-1730

    --- Mystic BBS v1.12 A45 (Linux/64)
    * Origin: BZ&BZ BBS (21:4/110)
  • From bugz_ubuntu@21:4/110 to Ubuntu Users on Tuesday, August 04, 2020 16:10:06
    libssh vulnerability

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

    * Ubuntu 20.04 LTS
    * Ubuntu 18.04 LTS
    * Ubuntu 16.04 LTS

    Summary

    libssh could be made to crash if it received a specially crafted
    request.

    Software Description

    * libssh - None

    Details

    It was discovered that libssh incorrectly handled certain
    requests. An attacker could possibly use this issue to cause a
    denial of service.

    Update instructions

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

    Ubuntu 20.04 LTS
    libssh-4 - 0.9.3-2ubuntu2.1

    Ubuntu 18.04 LTS
    libssh-4 - 0.8.0~20170825.94fa1e38-1ubuntu0.7

    Ubuntu 16.04 LTS
    libssh-4 - 0.6.3-4.3ubuntu0.6

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

    In general, a standard system update will make all the necessary
    changes.

    References

    * CVE-2020-16135

    --- Mystic BBS v1.12 A46 (Linux/64)
    * Origin: BZ&BZ BBS (21:4/110)