CVE-2020-25721

Description

Kerberos acceptors need easy access to stable AD identifiers (eg objectSid). Samba as an AD DC now provides a way for Linux applications to obtain a reliable SID (and samAccountName) in issued tickets.

CVSS Metrics

• v3.1•HIGH•Score: 8.8CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
• v2.0•MEDIUM•Score: 6.5AV:N/AC:L/Au:S/C:P/I:P/A:P

EPSS Trends

Current EPSS score: 0.37%• Percentile: 59%

Techniques & Countermeasures

• CWE-20•Improper Input Validation

  The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

Affected Systems

• samba•samba

  ≥ 4.13.0, < 4.13.14 | ≥ 4.14.0, < 4.14.10 | ≥ 4.15.0, < 4.15.2

References (4)

• https://www.samba.org/samba/security/CVE-2020-25721.html
• https://bugzilla.samba.org/show_bug.cgi?id=14725
• https://bugzilla.redhat.com/show_bug.cgi?id=2021728
• https://security.gentoo.org/glsa/202309-06