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CVE-2023-3347

CVE-2023-3347 · Samba: smb2 packet signing is not enforced when "server signing = required" is set

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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 5.9 · Medium · EPSS 0.4% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • red hat enterprise linux 8

    Versions
    • ≥ 0:4.17.5-3.el8_8: Not affected (rpm)

    No fix published

  • red hat enterprise linux 9

    Versions
    • ≥ 0:4.17.5-103.el9_2: Not affected (rpm)

    No fix published

  • red hat enterprise linux 6

    No fix published

  • red hat enterprise linux 7

    No fix published

  • red hat storage 3

    No fix published

  • samba Debian:12

    Versions
    • 2:4.17.10+dfsg-0+deb12u1~bpo11+1
    • 2:4.17.8+dfsg-2
    • 2:4.17.8+dfsg-2.1
    • 2:4.17.9+dfsg-0+deb12u1
    • 2:4.17.9+dfsg-0+deb12u2
    • 2:4.17.9+dfsg-0+deb12u3
    • 2:4.17.9+dfsg-0+deb12u3~bpo11+1
    Affected ranges
    • ECOSYSTEM: < 2:4.17.10+dfsg-0+deb12u1

    Update to 2:4.17.10+dfsg-0+deb12u1

  • samba Debian:13

    Affected ranges
    • ECOSYSTEM: < 2:4.18.5+dfsg-1

    Update to 2:4.18.5+dfsg-1

  • samba Debian:14

    Affected ranges
    • ECOSYSTEM: < 2:4.18.5+dfsg-1

    Update to 2:4.18.5+dfsg-1

Original sources

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