DEBIAN-CVE-2023-3347

Advisory lineage Upstream: 1 Downstream: 1
Upstream
CVE-2023-3347
Downstream
DSA-5477-1
Published: 20 Jul 2023, 15:15
Last modified:28 Apr 2026, 20:26

Vulnerability Summary

Overall Risk (default)
low
24/100
CVSS Score
5.9 MEDIUM
3.1 (osv_debian)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

20 Jul 2023, 15:15
Published
Vulnerability first disclosed
28 Apr 2026, 20:26
Last Modified
Vulnerability information updated

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 Metrics

  • v3.1•MEDIUM•Score: 5.9CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Affected Systems

  • debian•samba

    < 2:4.17.10+dfsg-0+deb12u1 | < 2:4.18.5+dfsg-1 | < 2:4.18.5+dfsg-1

References (1)