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CVE-2023-3347

Samba: smb2 packet signing is not enforced when "server signing = required" is set

Published: Jul 20, 2023Updated: Dec 6, 2024 Sources: CVE List NVD BDUCWE-347
NVD MITRE
5.9CVSSMEDIUM
EPSS Score
0.4%
Top 69.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

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 Vector Breakdown

AV:NAC:HPR:NUI:NS:UC:NI:HA:N
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:HIntegrity
High
A:NAvailability
None
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Weaknesses

CWE-347NVD-CWE-noinfoCWE-924

Affected Products

Red Hat Enterprise Linux 8Red Hat
On-premOS
Operating Systems / linux-distro
Red Hat Enterprise Linux 9Red Hat
On-premOS
Operating Systems / linux-distro
Red Hat Enterprise Linux 6Red Hat
On-premOS
Operating Systems / linux-distro
Red Hat Enterprise Linux 7Red Hat
On-premOS
Operating Systems / linux-distro
Red Hat Storage 3Red Hat
On-prem
Operating Systems / linux-distro
red hatcommercialUSOperating Systemsaka red hat
and 10 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Collection
View detailed technique mapping

References

https://access.redhat.com/errata/RHSA-2023:4325
access.redhat.com
https://access.redhat.com/errata/RHSA-2023:4328
access.redhat.com
https://access.redhat.com/security/cve/CVE-2023-3347
access.redhat.com
and 11 more references View all →

Timeline

Published
Jul 20, 2023
Last Updated
Dec 6, 2024

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