Improper Verification of Cryptographic Signature Affecting samba package, versions <2:4.17.10+dfsg-0+deb12u1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.08% (37th percentile)

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  • Snyk IDSNYK-DEBIAN12-SAMBA-5788346
  • published20 Jul 2023
  • disclosed20 Jul 2023

Introduced: 20 Jul 2023

CVE-2023-3347  (opens in a new tab)
CWE-347  (opens in a new tab)
CWE-924  (opens in a new tab)

How to fix?

Upgrade Debian:12 samba to version 2:4.17.10+dfsg-0+deb12u1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream samba package and not the samba package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

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 Scores

version 3.1