CVE catalog
CVE-2023-3347
samba: CVE-2023-3347
- Severity
- Medium · CVSS 6.8
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.44% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | samba | sid | 2:4.25.1+dfsg-1 | fixed |
| Debian | samba | forky | 2:4.25.1+dfsg-1 | fixed |
| Debian | samba | trixie | 2:4.22.11+dfsg-0+deb13u1 | fixed |
| Debian | samba | trixie-security | 2:4.22.10+dfsg-0+deb13u2 | fixed |
| Debian | samba | bookworm | 2:4.17.12+dfsg-0+deb12u4 | fixed |
| Debian | samba | bookworm-security | 2:4.17.12+dfsg-0+deb12u4 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | samba | source | sid | 2:4.18.5+dfsg-1 | not yet assigned | Not reported | Not reported |
| Debian | samba | source | forky | 2:4.18.5+dfsg-1 | not yet assigned | Not reported | Not reported |
| Debian | samba | source | trixie | 2:4.18.5+dfsg-1 | not yet assigned | Not reported | Not reported |
| Debian | samba | source | bookworm | 2:4.17.10+dfsg-0+deb12u1 | not yet assigned | Not reported | Not reported |
OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.
References
- [https://access.redhat.com/errata/RHSA-2023:4325]
- [https://ftp.suse.com/pub/projects/security/csaf/rhsa-2023_4328.json]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2023-3347]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2023-3347]
- [https://security-tracker.debian.org/tracker/CVE-2023-3347]
- [https://wid.cert-bund.de/.well-known/csaf/white/2023/wid-sec-w-2023-1842.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]