Vulnerability Details CVE-2023-3347
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.004
EPSS Ranking 60.9%
CVSS Severity
CVSS v3 Score 5.9
References
- https://access.redhat.com/errata/RHSA-2023:4325
- https://access.redhat.com/errata/RHSA-2023:4328
- https://access.redhat.com/security/cve/CVE-2023-3347
- https://bugzilla.redhat.com/show_bug.cgi?id=2222792
- https://www.samba.org/samba/security/CVE-2023-3347.html
- https://access.redhat.com/errata/RHSA-2023:4325
- https://access.redhat.com/errata/RHSA-2023:4328
- https://access.redhat.com/security/cve/CVE-2023-3347
- https://bugzilla.redhat.com/show_bug.cgi?id=2222792
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BPCSGND7LO467AJGR5DYBGZLTCGTOBCC/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OT74M42E6C36W7PQVY3OS4ZM7DVYB64Z/
- https://security.netapp.com/advisory/ntap-20230731-0010/
- https://www.debian.org/security/2023/dsa-5477
- https://www.samba.org/samba/security/CVE-2023-3347.html
Products affected by CVE-2023-3347
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cpe:2.3:a:redhat:storage:3.0
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cpe:2.3:a:samba:samba:4.17.0
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cpe:2.3:a:samba:samba:4.17.1
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cpe:2.3:a:samba:samba:4.17.2
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cpe:2.3:a:samba:samba:4.17.3
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cpe:2.3:a:samba:samba:4.17.4
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cpe:2.3:a:samba:samba:4.17.5
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cpe:2.3:a:samba:samba:4.17.6
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cpe:2.3:a:samba:samba:4.17.7
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cpe:2.3:a:samba:samba:4.17.8
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cpe:2.3:a:samba:samba:4.17.9
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cpe:2.3:a:samba:samba:4.18.0
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cpe:2.3:a:samba:samba:4.18.1
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cpe:2.3:a:samba:samba:4.18.2
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cpe:2.3:a:samba:samba:4.18.3
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cpe:2.3:a:samba:samba:4.18.4
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cpe:2.3:o:fedoraproject:fedora:38
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cpe:2.3:o:redhat:enterprise_linux:8.0
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cpe:2.3:o:redhat:enterprise_linux:9.0