CVE-2023-3347
MediumCVSS 5.9Exploitation Probability (EPSS)
Low risk31th percentile - higher than 31% of all known CVEs
Summary
A vulnerability was found in Samba's SMB2 packet signing mechanism. 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.
Risk Assessment
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.
Recommendation
It is recommended that administrators ensure SMB2 packet signing is properly configured and enforced to protect against potential attacks.
Original NVD description (English source)
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.