CVE-2023-3347
5.9
MEDIUM
CVSS 3.1
EPSS 0.45%
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.
How to fix CVE-2023-3347
To remediate CVE-2023-3347, upgrade the affected package to a fixed version below.
- —upgrade to 2:4.17.10+dfsg-0+deb12u1 or later
Is CVE-2023-3347 being exploited?
Low — EPSS is 0.4%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 2:4.17.10+dfsg-0+deb12u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.9 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N |