CVE-2023-3347

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Source
https://cve.org/CVERecord?id=CVE-2023-3347
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-3347.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2023-3347
Downstream
Related
Published
2023-07-20T14:54:05.525Z
Modified
2026-06-18T03:56:30.422076210Z
Severity
  • 5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N CVSS Calculator
Summary
Samba: smb2 packet signing is not enforced when "server signing = required" is set
Details

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.

Database specific 
{
    "cna_assigner": "redhat",
    "cwe_ids": [
        "CWE-347"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/3xxx/CVE-2023-3347.json"
}
References

Affected packages

Git / github.com/samba-team/samba

Affected ranges

Type
GIT
Repo
https://github.com/samba-team/samba
Events
Introduced
fbec737d9d3d992b54f52defcba62a304efef8f7
Fixed
5eceb0dfb4a6490da3e7fc58f4b527b16b934195
Introduced
a597a8767fabfe85ee0bcf869407e770a0c3e184
Fixed
50a9b496556c08a451d8f18707fa709de69942ec
Database specific 
{
    "source": "CPE_RANGE",
    "extracted_events": [
        {
            "introduced": "4.17.0"
        },
        {
            "fixed": "4.17.10"
        },
        {
            "introduced": "4.18.0"
        },
        {
            "fixed": "4.18.5"
        }
    ],
    "cpe": "cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*"
}

Affected versions

ldb-2.*
ldb-2.6.2
ldb-2.7.2
samba-4.*
samba-4.17.0
samba-4.17.1
samba-4.17.2
samba-4.17.4
samba-4.17.5
samba-4.17.6
samba-4.17.7
samba-4.17.8
samba-4.17.9
samba-4.18.0
samba-4.18.1
samba-4.18.2
samba-4.18.3
samba-4.18.4

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-3347.json"