Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Samba | Samba | >= 4.17.0, < 4.17.10 |
| Redhat | Storage | 3.0 |
| Redhat | Enterprise Linux | 8.0 |
| Fedoraproject | Fedora | 38 |
Related Weaknesses (CWE)
References
- https://access.redhat.com/errata/RHSA-2023:4325Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:4328Third Party Advisory
- https://access.redhat.com/security/cve/CVE-2023-3347Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2222792Issue TrackingThird Party Advisory
- https://www.samba.org/samba/security/CVE-2023-3347.htmlVendor Advisory
- https://access.redhat.com/errata/RHSA-2023:4325Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:4328Third Party Advisory
- https://access.redhat.com/security/cve/CVE-2023-3347Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2222792Issue TrackingThird Party Advisory
- https://lists.fedoraproject.org/archives/list/[email protected]
- https://lists.fedoraproject.org/archives/list/[email protected]
- 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.htmlVendor Advisory
FAQ
What is CVE-2023-3347?
CVE-2023-3347 is a vulnerability with a CVSS score of 5.9 (MEDIUM). 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 Control...
How severe is CVE-2023-3347?
CVE-2023-3347 has been rated MEDIUM with a CVSS base score of 5.9/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-3347?
Check the references section above for vendor advisories and patch information. Affected products include: Samba Samba, Redhat Storage, Redhat Enterprise Linux, Fedoraproject Fedora.