CVEvulnerability

CVE-2023-3347

5.9 MEDIUM Published 2023-07-20 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2023-07-20
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
5.9 MEDIUM — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
CVSS 3.1 ([email protected])
5.9 MEDIUM — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Weaknesses
CWE-347, CWE-924

Description

A vulnerability was found in Samba's SMB2 packet signing mechanism. The SMB2 packet signing is not enforced if an admin configured "server signing = required" or for SMB2 connections to Domain Controllers where SMB2 packet signing is mandatory. This flaw allows an attacker to perform attacks, such as a man-in-the-middle attack, by intercepting the network traffic and modifying the SMB2 messages between client and server, affecting the integrity of the data.

Affected configurations

• samba samba (>= 4.17.0 < 4.17.10) • samba samba (>= 4.18.0 < 4.18.5) • redhat storage 3.0 • redhat enterprise linux 8.0 • redhat enterprise linux 9.0 • fedoraproject fedora 38

Related

Weakness · CWE (2)

  • CWE-347 Improper Verification of Cryptographic Signature weakness
  • CWE-924 Improper Enforcement of Message Integrity During Transmission in a Communication Channel weakness

References