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MEDIUM

samba: Man-in-the-middle attacks possible with NTLMSSP authentication

Published Apr 25, 2016

Description

The NTLMSSP authentication implementation in Samba 3.x and 4.x before 4.2.11, 4.3.x before 4.3.8, and 4.4.x before 4.4.2 allows man-in-the-middle attackers to perform protocol-downgrade attacks by modifying the client-server data stream to remove application-layer flags or encryption settings, as demonstrated by clearing the NTLMSSP_NEGOTIATE_SEAL or NTLMSSP_NEGOTIATE_SIGN option to disrupt LDAP security.

Affected products

Remediation

No remediation recorded yet.

Metrics

Weaknesses (2)

References (47)

Change history (0)

No recorded changes yet.

Sources
CVE.org / MITRE
Status PUBLISHED
Assigner redhat
Published Apr 25, 2016
Updated Aug 5, 2024
Reserved Jan 29, 2016
NVD
Status Modified
Modified Jun 17, 2026
Red Hat
Severity Moderate
Public date Apr 12, 2016