The remote Ubuntu 20.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-5142-1 advisory.

    Stefan Metzmacher discovered that Samba incorrectly handled SMB1 client connections. A remote attacker     could possibly use this issue to downgrade connections to plaintext authentication. (CVE-2016-2124)

    Andrew Bartlett discovered that Samba incorrectly mapping domain users to local users. An authenticated     attacker could possibly use this issue to become root on domain members. (CVE-2020-25717)

    Andrew Bartlett discovered that Samba did not correctly sandbox Kerberos tickets issues by an RODC. An     RODC could print administrator tickets, contrary to expectations. (CVE-2020-25718)

    Andrew Bartlett discovered that Samba incorrectly handled Kerberos tickets. Delegated administrators could     possibly use this issue to impersonate accounts, leading to total domain compromise. (CVE-2020-25719)

    Andrew Bartlett discovered that Samba did not provide stable AD identifiers to Kerberos acceptors.
    (CVE-2020-25721)

    Andrew Bartlett discovered that Samba did not properly check sensitive attributes. An authenticated     attacker could possibly use this issue to escalate privileges. (CVE-2020-25722)

    Stefan Metzmacher discovered that Samba incorrectly handled certain large DCE/RPC requests. A remote     attacker could possibly use this issue to bypass signature requirements. (CVE-2021-23192)

    William Ross discovered that Samba incorrectly handled memory. A remote attacker could use this issue to     cause Samba to crash, resulting in a denial of service, or possibly escalate privileges. (CVE-2021-3738)

    Joseph Sutton discovered that Samba incorrectly handled certain TGS requests. An authenticated attacker     could possibly use this issue to cause Samba to crash, resulting in a denial of service. (CVE-2021-3671)

    The fix for CVE-2020-25717 results in possible behaviour changes that could affect certain environments.
    Please see the upstream advisory for more information:

    https://www.samba.org/samba/security/CVE-2020-25717.html

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Detections

Analytics

Ubuntu 20.04 LTS : Samba vulnerabilities (USN-5142-1)

high Nessus Plugin ID 155297

Version 1.13

Version 1.12

Version 1.11

Version 1.10

Version 1.9

Version 1.8

Version 1.13 Aug 28, 2024, 7:43 PM CVSS metrics ("Cvssv4 score" set to 0.0) CVSSv2 severity (based on None, severity decreased from "High" to "Low") Detection (updated detection logic) Plugin metadata Plugin Feed: 202408281943
Version 1.12 Oct 21, 2023, 5:06 AM Detection Exploit attributes ("Exploit available" set to "False") Plugin metadata Plugin Feed: 202310210506
Version 1.11 Mar 21, 2023, 7:30 PM Plugin metadata Plugin Feed: 202303211930
Version 1.10 Jan 18, 2023, 9:01 AM Logic Changes (Added support for s390x) Plugin Feed: 202301180901
Version 1.9 Jan 4, 2023, 7:50 PM Regenerated based on advisory update Plugin Feed: 202301041950
Version 1.8 Nov 28, 2022, 5:58 PM IAVM reference Plugin Feed: 202211281758