Attacker Value
Unknown
(0 users assessed)
Exploitability
Unknown
(0 users assessed)
User Interaction
None
Privileges Required
None
Attack Vector
Network
0

CVE-2023-3347

Disclosure Date: July 20, 2023 •
CVE-2023-3347 CVSS v3 Base Score: 5.9
Add MITRE ATT&CK tactics and techniques that apply to this CVE.

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.

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CVSS V3 Severity and Metrics
Base Score:
5.9 Medium
Impact Score:
3.6
Exploitability Score:
2.2
Vector:
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack Vector (AV):
Network
Attack Complexity (AC):
High
Privileges Required (PR):
None
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
None
Integrity (I):
High
Availability (A):
None

General Information

Offensive Application
Unknown
Utility Class
Unknown
Ports
Unknown
OS
Unknown
Vulnerable Versions
Red Hat Enterprise Linux 8 not down converted
Red Hat Enterprise Linux 8 not down converted
Red Hat Enterprise Linux 9 not down converted
Red Hat Enterprise Linux 9 not down converted
Red Hat Enterprise Linux 6 not down converted
Red Hat Enterprise Linux 6 not down converted
Red Hat Enterprise Linux 7 not down converted
Red Hat Storage 3 not down converted
Prerequisites
Unknown
Discovered By
Unknown
PoC Author
Unknown
Metasploit Module
Unknown
Reporter
Unknown

Vendors

  • fedoraproject,
  • redhat,
  • samba

Products

  • enterprise linux 8.0,
  • enterprise linux 9.0,
  • fedora 38,
  • samba,
  • storage 3.0
Technical Analysis