CVE-2022-2031

Description

A flaw was found in Samba. The security vulnerability occurs when KDC and the kpasswd service share a single account and set of keys, allowing them to decrypt each other's tickets. A user who has been requested to change their password, can exploit this flaw to obtain and use tickets to other services.

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

EPSS Trends

Current EPSS score: 1.13%• Percentile: 65%

Techniques & Countermeasures

• CWE-288•Authentication Bypass Using an Alternate Path or Channel

  The product requires authentication, but the product has an alternate path or channel that does not require authentication.

• 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

• alpine•samba

  ≥ 4.15.0, < 4.14.14-r0 | ≥ 4.15.0, < 4.15.12-r0 | ≥ 4.15.0, < 4.15.12-r0 | ≥ 4.15.0, < 4.15.9-r0 | ≥ 4.15.0, < 4.15.9-r0 | ≥ 4.15.0, < 4.15.9-r0 | ≥ 4.15.0, < 4.15.9-r0 | ≥ 4.15.0, < 4.15.9-r0 | ≥ 4.15.0, < 4.15.9-r0 | ≥ 4.15.0, < 4.15.9-r0 | ≥ 4.15.0, < 4.15.9-r0

• debian•samba

  < 2:4.13.13+dfsg-1~deb11u5 | < 2:4.16.4+dfsg-1 | < 2:4.16.4+dfsg-1 | < 2:4.16.4+dfsg-1

• samba•samba

  < 4.14.14 | ≥ 4.15.0, < 4.15.9 | ≥ 4.16.0, < 4.16.4

References (4)

• https://www.samba.org/samba/security/CVE-2022-2031.html
• https://security.gentoo.org/glsa/202309-06
• https://security-tracker.debian.org/tracker/CVE-2022-2031
• https://security.alpinelinux.org/vuln/CVE-2022-2031