Vulnerabilities > CVE-2023-3347 - Improper Enforcement of Message Integrity During Transmission in a Communication Channel vulnerability in multiple products
Attack vector
NETWORK Attack complexity
HIGH Privileges required
NONE Confidentiality impact
NONE Integrity impact
HIGH Availability impact
NONE Summary
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.
Vulnerable Configurations
| Part | Description | Count |
|---|---|---|
| Application | 24 | |
| Application | 1 | |
| OS | 2 | |
| OS | 1 |
Common Weakness Enumeration (CWE)
References
- https://access.redhat.com/errata/RHSA-2023:4325
- https://access.redhat.com/errata/RHSA-2023:4325
- https://access.redhat.com/errata/RHSA-2023:4328
- https://access.redhat.com/errata/RHSA-2023:4328
- https://access.redhat.com/security/cve/CVE-2023-3347
- https://access.redhat.com/security/cve/CVE-2023-3347
- https://bugzilla.redhat.com/show_bug.cgi?id=2222792
- https://bugzilla.redhat.com/show_bug.cgi?id=2222792
- https://lists.fedoraproject.org/archives/list/[email protected]/message/BPCSGND7LO467AJGR5DYBGZLTCGTOBCC/
- https://lists.fedoraproject.org/archives/list/[email protected]/message/OT74M42E6C36W7PQVY3OS4ZM7DVYB64Z/
- https://security.netapp.com/advisory/ntap-20230731-0010/
- https://www.debian.org/security/2023/dsa-5477
- https://www.samba.org/samba/security/CVE-2023-3347.html
- https://www.samba.org/samba/security/CVE-2023-3347.html