CVE-2020-25719

Advisory lineage Upstream: 0 Downstream: 14
Modified
Published: 18 Feb 2022, 00:00
Last modified:04 Aug 2024, 15:40

Vulnerability Summary

Overall Risk (default)
high
70/100
CVSS Score
9 HIGH
v2.0 (nvd)
EPSS Score
0.21% LOW
0% probability -0.03%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

18 Feb 2022, 00:00
Published
Vulnerability first disclosed
04 Aug 2024, 15:40
Last Modified
Vulnerability information updated

Description

A flaw was found in the way Samba, as an Active Directory Domain Controller, implemented Kerberos name-based authentication. The Samba AD DC, could become confused about the user a ticket represents if it did not strictly require a Kerberos PAC and always use the SIDs found within. The result could include total domain compromise.

CVSS Metrics

  • v3.1•HIGH•Score: 7.2CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
  • v2.0•HIGH•Score: 9AV:N/AC:L/Au:S/C:C/I:C/A:C

EPSS Trends

Current EPSS score: 0.21%• Percentile: 44%

Techniques & Countermeasures

  • CWE-362•Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

    The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.

  • CWE-287•Improper Authentication

    When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.

Affected Systems

  • canonical•ubuntu_linux

    20.04 | 21.04 | 21.10

  • debian•debian_linux

    9.0 | 10.0

  • fedoraproject•fedora

    33 | 34 | 35

  • redhat•enterprise_linux

    7.0 | 8.0

  • redhat•enterprise_linux_desktop

    7.0

  • redhat•enterprise_linux_eus

    8.2 | 8.4

  • redhat•enterprise_linux_for_ibm_z_systems

    7.0 | 8.0

  • redhat•enterprise_linux_for_ibm_z_systems_eus

    8.2 | 8.4

  • redhat•enterprise_linux_for_power_big_endian

    7.0

  • redhat•enterprise_linux_for_power_little_endian

    7.0 | 8.0

  • redhat•enterprise_linux_for_power_little_endian_eus

    8.2 | 8.4

  • redhat•enterprise_linux_for_scientific_computing

    7.0

  • redhat•enterprise_linux_server_aus

    8.2 | 8.4

  • redhat•enterprise_linux_server_tus

    8.2 | 8.4

  • redhat•enterprise_linux_server_update_services_for_sap_solutions

    8.2 | 8.4

  • redhat•enterprise_linux_workstation

    7.0

  • samba•samba

    ≥ 4.0.0, < 4.13.14 | ≥ 4.14.0, < 4.14.10 | ≥ 4.15.0, < 4.15.2

References (3)