Vulnerability-Lookup

UBUNTU-CVE-2023-3347 (CVE-2023-3347)

Vulnerability from osv_ubuntu – Published: 2023-07-19 00:00 – Updated: 2025-07-16 05:08 – Source website

Withdrawn 2025-07-18

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.

Severity

5.9 (Medium)


                    
                      CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

5.9 (Medium)


                    
                      CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2023-3347	REPORT
	https://www.samba.org/samba/security/CVE-2023-3347.html	REPORT
	https://ubuntu.com/security/notices/USN-6238-1	ADVISORY
	https://www.cve.org/CVERecord?id=CVE-2023-3347	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "ctdb",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.2"
          },
          {
            "binary_name": "ctdb-dbgsym",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.2"
          },
          {
            "binary_name": "libnss-winbind",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.2"
          },
          {
            "binary_name": "libnss-winbind-dbgsym",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.2"
          },
          {
            "binary_name": "libpam-winbind",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.2"
          },
          {
            "binary_name": "libpam-winbind-dbgsym",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.2"
          },
          {
            "binary_name": "libsmbclient",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.2"
          },
          {
            "binary_name": "libsmbclient-dbgsym",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.2"
          },
          {
            "binary_name": "libsmbclient-dev",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.2"
          },
          {
            "binary_name": "libwbclient-dev",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.2"
          },
          {
            "binary_name": "libwbclient0",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.2"
          },
          {
            "binary_name": "libwbclient0-dbgsym",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.2"
          },
          {
            "binary_name": "python3-samba",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.2"
          },
          {
            "binary_name": "python3-samba-dbgsym",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.2"
          },
          {
            "binary_name": "registry-tools",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.2"
          },
          {
            "binary_name": "registry-tools-dbgsym",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.2"
          },
          {
            "binary_name": "samba",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.2"
          },
          {
            "binary_name": "samba-common",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.2"
          },
          {
            "binary_name": "samba-common-bin",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.2"
          },
          {
            "binary_name": "samba-common-bin-dbgsym",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.2"
          },
          {
            "binary_name": "samba-dbgsym",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.2"
          },
          {
            "binary_name": "samba-dev",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.2"
          },
          {
            "binary_name": "samba-dsdb-modules",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.2"
          },
          {
            "binary_name": "samba-dsdb-modules-dbgsym",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.2"
          },
          {
            "binary_name": "samba-libs",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.2"
          },
          {
            "binary_name": "samba-libs-dbgsym",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.2"
          },
          {
            "binary_name": "samba-testsuite",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.2"
          },
          {
            "binary_name": "samba-testsuite-dbgsym",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.2"
          },
          {
            "binary_name": "samba-vfs-modules",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.2"
          },
          {
            "binary_name": "samba-vfs-modules-dbgsym",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.2"
          },
          {
            "binary_name": "smbclient",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.2"
          },
          {
            "binary_name": "smbclient-dbgsym",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.2"
          },
          {
            "binary_name": "winbind",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.2"
          },
          {
            "binary_name": "winbind-dbgsym",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "samba",
        "purl": "pkg:deb/ubuntu/samba@2:4.15.13+dfsg-0ubuntu0.20.04.2?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:4.15.13+dfsg-0ubuntu0.20.04.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2:4.10.7+dfsg-0ubuntu2",
        "2:4.10.7+dfsg-0ubuntu3",
        "2:4.11.1+dfsg-3ubuntu1",
        "2:4.11.1+dfsg-3ubuntu2",
        "2:4.11.1+dfsg-3ubuntu4",
        "2:4.11.5+dfsg-1ubuntu1",
        "2:4.11.5+dfsg-1ubuntu2",
        "2:4.11.6+dfsg-0ubuntu1",
        "2:4.11.6+dfsg-0ubuntu1.1",
        "2:4.11.6+dfsg-0ubuntu1.2",
        "2:4.11.6+dfsg-0ubuntu1.3",
        "2:4.11.6+dfsg-0ubuntu1.4",
        "2:4.11.6+dfsg-0ubuntu1.5",
        "2:4.11.6+dfsg-0ubuntu1.6",
        "2:4.11.6+dfsg-0ubuntu1.8",
        "2:4.11.6+dfsg-0ubuntu1.9",
        "2:4.11.6+dfsg-0ubuntu1.10",
        "2:4.13.14+dfsg-0ubuntu0.20.04.1",
        "2:4.13.14+dfsg-0ubuntu0.20.04.2",
        "2:4.13.14+dfsg-0ubuntu0.20.04.3",
        "2:4.13.14+dfsg-0ubuntu0.20.04.4",
        "2:4.13.17~dfsg-0ubuntu0.21.04.1",
        "2:4.13.17~dfsg-0ubuntu0.21.04.2",
        "2:4.13.17~dfsg-0ubuntu1.20.04.1",
        "2:4.13.17~dfsg-0ubuntu1.20.04.2",
        "2:4.13.17~dfsg-0ubuntu1.20.04.4",
        "2:4.13.17~dfsg-0ubuntu1.20.04.5",
        "2:4.15.13+dfsg-0ubuntu0.20.04.1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "ctdb",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.1"
          },
          {
            "binary_name": "ctdb-dbgsym",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.1"
          },
          {
            "binary_name": "libnss-winbind",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.1"
          },
          {
            "binary_name": "libnss-winbind-dbgsym",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.1"
          },
          {
            "binary_name": "libpam-winbind",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.1"
          },
          {
            "binary_name": "libpam-winbind-dbgsym",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.1"
          },
          {
            "binary_name": "libsmbclient",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.1"
          },
          {
            "binary_name": "libsmbclient-dbgsym",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.1"
          },
          {
            "binary_name": "libsmbclient-dev",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.1"
          },
          {
            "binary_name": "libwbclient-dev",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.1"
          },
          {
            "binary_name": "libwbclient0",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.1"
          },
          {
            "binary_name": "libwbclient0-dbgsym",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.1"
          },
          {
            "binary_name": "python3-samba",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.1"
          },
          {
            "binary_name": "python3-samba-dbgsym",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.1"
          },
          {
            "binary_name": "registry-tools",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.1"
          },
          {
            "binary_name": "registry-tools-dbgsym",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.1"
          },
          {
            "binary_name": "samba",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.1"
          },
          {
            "binary_name": "samba-common",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.1"
          },
          {
            "binary_name": "samba-common-bin",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.1"
          },
          {
            "binary_name": "samba-common-bin-dbgsym",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.1"
          },
          {
            "binary_name": "samba-dbgsym",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.1"
          },
          {
            "binary_name": "samba-dev",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.1"
          },
          {
            "binary_name": "samba-dsdb-modules",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.1"
          },
          {
            "binary_name": "samba-dsdb-modules-dbgsym",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.1"
          },
          {
            "binary_name": "samba-libs",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.1"
          },
          {
            "binary_name": "samba-libs-dbgsym",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.1"
          },
          {
            "binary_name": "samba-testsuite",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.1"
          },
          {
            "binary_name": "samba-testsuite-dbgsym",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.1"
          },
          {
            "binary_name": "samba-vfs-modules",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.1"
          },
          {
            "binary_name": "samba-vfs-modules-dbgsym",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.1"
          },
          {
            "binary_name": "smbclient",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.1"
          },
          {
            "binary_name": "smbclient-dbgsym",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.1"
          },
          {
            "binary_name": "winbind",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.1"
          },
          {
            "binary_name": "winbind-dbgsym",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "samba",
        "purl": "pkg:deb/ubuntu/samba@2:4.15.13+dfsg-0ubuntu1.1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:4.15.13+dfsg-0ubuntu1.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2:4.13.5+dfsg-2ubuntu2",
        "2:4.13.5+dfsg-2ubuntu3",
        "2:4.13.14+dfsg-0ubuntu1",
        "2:4.13.14+dfsg-0ubuntu2",
        "2:4.15.5~dfsg-0ubuntu1",
        "2:4.15.5~dfsg-0ubuntu2",
        "2:4.15.5~dfsg-0ubuntu4",
        "2:4.15.5~dfsg-0ubuntu5",
        "2:4.15.5~dfsg-0ubuntu5.1",
        "2:4.15.9+dfsg-0ubuntu0.2",
        "2:4.15.9+dfsg-0ubuntu0.3",
        "2:4.15.13+dfsg-0ubuntu1"
      ]
    }
  ],
  "aliases": [],
  "details": "A vulnerability was found in Samba\u0027s 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.",
  "id": "UBUNTU-CVE-2023-3347",
  "modified": "2025-07-16T05:08:48Z",
  "published": "2023-07-19T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2023-3347"
    },
    {
      "type": "REPORT",
      "url": "https://www.samba.org/samba/security/CVE-2023-3347.html"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-6238-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2023-3347"
    }
  ],
  "related": [
    "USN-6238-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2023-3347"
  ],
  "withdrawn": "2025-07-18T16:54:02Z"
}

CVE-2023-3347 (GCVE-0-2023-3347)

Vulnerability from cvelistv5 – Published: 2023-07-20 14:54 – Updated: 2025-11-20 17:26

Title

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

Summary

Severity

5.9 (Medium)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-04-25 13:37 UTC

CWE

CWE-347 - Improper Verification of Cryptographic Signature
CWE-924 - Improper Enforcement of Message Integrity During Transmission in a Communication Channel

Assigner

redhat redhat root

References

9 references

URL	Tags
https://access.redhat.com/errata/RHSA-2023:4325	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2023:4328	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2023-3347	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2222792	issue-trackingx_refsource_REDHAT
https://www.samba.org/samba/security/CVE-2023-3347.html
https://lists.fedoraproject.org/archives/list/pac…	x_transferred
https://lists.fedoraproject.org/archives/list/pac…	x_transferred
https://security.netapp.com/advisory/ntap-2023073…	x_transferred
https://www.debian.org/security/2023/dsa-5477	x_transferred

Impacted products

5 products

Vendor	Product	Version
Red Hat	Red Hat Enterprise Linux 8	Unaffected: 0:4.17.5-3.el8_8 , < * (rpm) cpe:/o:redhat:enterprise_linux:8::baseos cpe:/a:redhat:enterprise_linux:8::appstream cpe:/a:redhat:enterprise_linux:8::crb
Red Hat	Red Hat Enterprise Linux 9	Unaffected: 0:4.17.5-103.el9_2 , < * (rpm) cpe:/a:redhat:enterprise_linux:9::appstream cpe:/o:redhat:enterprise_linux:9::baseos cpe:/a:redhat:enterprise_linux:9::crb cpe:/a:redhat:enterprise_linux:9::resilientstorage
Red Hat	Red Hat Enterprise Linux 6	cpe:/o:redhat:enterprise_linux:6
Red Hat	Red Hat Enterprise Linux 7	cpe:/o:redhat:enterprise_linux:7
Red Hat	Red Hat Storage 3	cpe:/a:redhat:storage:3

Date Public

2023-07-19 00:00

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2023-3347",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-04-25T13:37:21.160351Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-924",
                "description": "CWE-924 Improper Enforcement of Message Integrity During Transmission in a Communication Channel",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-06-04T17:17:36.560Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T06:55:03.149Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "RHSA-2023:4325",
            "tags": [
              "vendor-advisory",
              "x_refsource_REDHAT",
              "x_transferred"
            ],
            "url": "https://access.redhat.com/errata/RHSA-2023:4325"
          },
          {
            "name": "RHSA-2023:4328",
            "tags": [
              "vendor-advisory",
              "x_refsource_REDHAT",
              "x_transferred"
            ],
            "url": "https://access.redhat.com/errata/RHSA-2023:4328"
          },
          {
            "tags": [
              "vdb-entry",
              "x_refsource_REDHAT",
              "x_transferred"
            ],
            "url": "https://access.redhat.com/security/cve/CVE-2023-3347"
          },
          {
            "name": "RHBZ#2222792",
            "tags": [
              "issue-tracking",
              "x_refsource_REDHAT",
              "x_transferred"
            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2222792"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BPCSGND7LO467AJGR5DYBGZLTCGTOBCC/"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OT74M42E6C36W7PQVY3OS4ZM7DVYB64Z/"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://security.netapp.com/advisory/ntap-20230731-0010/"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://www.debian.org/security/2023/dsa-5477"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://www.samba.org/samba/security/CVE-2023-3347.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:8::baseos",
            "cpe:/a:redhat:enterprise_linux:8::appstream",
            "cpe:/a:redhat:enterprise_linux:8::crb"
          ],
          "defaultStatus": "affected",
          "packageName": "samba",
          "product": "Red Hat Enterprise Linux 8",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "0:4.17.5-3.el8_8",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:8::baseos",
            "cpe:/a:redhat:enterprise_linux:8::appstream",
            "cpe:/a:redhat:enterprise_linux:8::crb"
          ],
          "defaultStatus": "affected",
          "packageName": "samba",
          "product": "Red Hat Enterprise Linux 8",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "0:4.17.5-3.el8_8",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:enterprise_linux:9::appstream",
            "cpe:/o:redhat:enterprise_linux:9::baseos",
            "cpe:/a:redhat:enterprise_linux:9::crb",
            "cpe:/a:redhat:enterprise_linux:9::resilientstorage"
          ],
          "defaultStatus": "affected",
          "packageName": "samba",
          "product": "Red Hat Enterprise Linux 9",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "0:4.17.5-103.el9_2",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:enterprise_linux:9::appstream",
            "cpe:/o:redhat:enterprise_linux:9::baseos",
            "cpe:/a:redhat:enterprise_linux:9::crb",
            "cpe:/a:redhat:enterprise_linux:9::resilientstorage"
          ],
          "defaultStatus": "affected",
          "packageName": "samba",
          "product": "Red Hat Enterprise Linux 9",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "0:4.17.5-103.el9_2",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:6"
          ],
          "defaultStatus": "unaffected",
          "packageName": "samba",
          "product": "Red Hat Enterprise Linux 6",
          "vendor": "Red Hat"
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:6"
          ],
          "defaultStatus": "unaffected",
          "packageName": "samba4",
          "product": "Red Hat Enterprise Linux 6",
          "vendor": "Red Hat"
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:7"
          ],
          "defaultStatus": "unaffected",
          "packageName": "samba",
          "product": "Red Hat Enterprise Linux 7",
          "vendor": "Red Hat"
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:storage:3"
          ],
          "defaultStatus": "unknown",
          "packageName": "samba",
          "product": "Red Hat Storage 3",
          "vendor": "Red Hat"
        }
      ],
      "datePublic": "2023-07-19T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability was found in Samba\u0027s 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."
        }
      ],
      "metrics": [
        {
          "other": {
            "content": {
              "namespace": "https://access.redhat.com/security/updates/classification/",
              "value": "Moderate"
            },
            "type": "Red Hat severity rating"
          }
        },
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.9,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N",
            "version": "3.1"
          },
          "format": "CVSS"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-347",
              "description": "Improper Verification of Cryptographic Signature",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-11-20T17:26:17.194Z",
        "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "shortName": "redhat"
      },
      "references": [
        {
          "name": "RHSA-2023:4325",
          "tags": [
            "vendor-advisory",
            "x_refsource_REDHAT"
          ],
          "url": "https://access.redhat.com/errata/RHSA-2023:4325"
        },
        {
          "name": "RHSA-2023:4328",
          "tags": [
            "vendor-advisory",
            "x_refsource_REDHAT"
          ],
          "url": "https://access.redhat.com/errata/RHSA-2023:4328"
        },
        {
          "tags": [
            "vdb-entry",
            "x_refsource_REDHAT"
          ],
          "url": "https://access.redhat.com/security/cve/CVE-2023-3347"
        },
        {
          "name": "RHBZ#2222792",
          "tags": [
            "issue-tracking",
            "x_refsource_REDHAT"
          ],
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2222792"
        },
        {
          "url": "https://www.samba.org/samba/security/CVE-2023-3347.html"
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2023-07-13T00:00:00.000Z",
          "value": "Reported to Red Hat."
        },
        {
          "lang": "en",
          "time": "2023-07-19T00:00:00.000Z",
          "value": "Made public."
        }
      ],
      "title": "Samba: smb2 packet signing is not enforced when \"server signing = required\" is set",
      "x_redhatCweChain": "CWE-347: Improper Verification of Cryptographic Signature"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
    "assignerShortName": "redhat",
    "cveId": "CVE-2023-3347",
    "datePublished": "2023-07-20T14:54:05.525Z",
    "dateReserved": "2023-06-21T04:43:49.434Z",
    "dateUpdated": "2025-11-20T17:26:17.194Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

USN-6238-1 (UBUNTU-CVE-2022-2127)

Vulnerability from osv_ubuntu – Published: 2023-07-19 14:45 – Updated: 2026-04-27 14:11 – Source website

Summary

samba vulnerabilities

Details

It was discovered that Samba incorrectly handled Winbind NTLM authentication responses. An attacker could possibly use this issue to cause Samba to crash, resulting in a denial of service. (CVE-2022-2127)

Andreas Schneider discovered that Samba incorrectly enforced SMB2 packet signing. A remote attacker could possibly use this issue to obtain or modify sensitive information. This issue only affected Ubuntu 23.04. (CVE-2023-3347)

Florent Saudel and Arnaud Gatignolof discovered that Samba incorrectly handled certain Spotlight requests. A remote attacker could possibly use this issue to cause Samba to consume resources, leading to a denial of service. (CVE-2023-34966, CVE-2023-34967)

Ralph Boehme and Stefan Metzmacher discovered that Samba incorrectly handled paths returned by Spotlight requests. A remote attacker could possibly use this issue to obtain sensitive information. (CVE-2023-34968)

References

URL

Type

	https://ubuntu.com/security/notices/USN-6238-1	ADVISORY
	https://ubuntu.com/security/CVE-2022-2127	REPORT
	https://ubuntu.com/security/CVE-2023-3347	REPORT
	https://ubuntu.com/security/CVE-2023-34966	REPORT
	https://ubuntu.com/security/CVE-2023-34967	REPORT
	https://ubuntu.com/security/CVE-2023-34968	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2022-2127",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2023-34966",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2023-34967",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2023-34968",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:20.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "ctdb",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.3"
          },
          {
            "binary_name": "libnss-winbind",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.3"
          },
          {
            "binary_name": "libpam-winbind",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.3"
          },
          {
            "binary_name": "libsmbclient",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.3"
          },
          {
            "binary_name": "libwbclient0",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.3"
          },
          {
            "binary_name": "python3-samba",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.3"
          },
          {
            "binary_name": "registry-tools",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.3"
          },
          {
            "binary_name": "samba",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.3"
          },
          {
            "binary_name": "samba-common",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.3"
          },
          {
            "binary_name": "samba-common-bin",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.3"
          },
          {
            "binary_name": "samba-dsdb-modules",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.3"
          },
          {
            "binary_name": "samba-libs",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.3"
          },
          {
            "binary_name": "samba-testsuite",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.3"
          },
          {
            "binary_name": "samba-vfs-modules",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.3"
          },
          {
            "binary_name": "smbclient",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.3"
          },
          {
            "binary_name": "winbind",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "samba",
        "purl": "pkg:deb/ubuntu/samba@2:4.15.13+dfsg-0ubuntu0.20.04.3?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:4.15.13+dfsg-0ubuntu0.20.04.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2:4.10.7+dfsg-0ubuntu2",
        "2:4.10.7+dfsg-0ubuntu3",
        "2:4.11.1+dfsg-3ubuntu1",
        "2:4.11.1+dfsg-3ubuntu2",
        "2:4.11.1+dfsg-3ubuntu4",
        "2:4.11.5+dfsg-1ubuntu1",
        "2:4.11.5+dfsg-1ubuntu2",
        "2:4.11.6+dfsg-0ubuntu1",
        "2:4.11.6+dfsg-0ubuntu1.1",
        "2:4.11.6+dfsg-0ubuntu1.2",
        "2:4.11.6+dfsg-0ubuntu1.3",
        "2:4.11.6+dfsg-0ubuntu1.4",
        "2:4.11.6+dfsg-0ubuntu1.5",
        "2:4.11.6+dfsg-0ubuntu1.6",
        "2:4.11.6+dfsg-0ubuntu1.8",
        "2:4.11.6+dfsg-0ubuntu1.9",
        "2:4.11.6+dfsg-0ubuntu1.10",
        "2:4.13.14+dfsg-0ubuntu0.20.04.1",
        "2:4.13.14+dfsg-0ubuntu0.20.04.2",
        "2:4.13.14+dfsg-0ubuntu0.20.04.3",
        "2:4.13.14+dfsg-0ubuntu0.20.04.4",
        "2:4.13.17~dfsg-0ubuntu0.21.04.1",
        "2:4.13.17~dfsg-0ubuntu0.21.04.2",
        "2:4.13.17~dfsg-0ubuntu1.20.04.1",
        "2:4.13.17~dfsg-0ubuntu1.20.04.2",
        "2:4.13.17~dfsg-0ubuntu1.20.04.4",
        "2:4.13.17~dfsg-0ubuntu1.20.04.5",
        "2:4.15.13+dfsg-0ubuntu0.20.04.1",
        "2:4.15.13+dfsg-0ubuntu0.20.04.2"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2022-2127",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2023-34966",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2023-34967",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2023-34968",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:22.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "ctdb",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.2"
          },
          {
            "binary_name": "libnss-winbind",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.2"
          },
          {
            "binary_name": "libpam-winbind",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.2"
          },
          {
            "binary_name": "libsmbclient",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.2"
          },
          {
            "binary_name": "libwbclient0",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.2"
          },
          {
            "binary_name": "python3-samba",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.2"
          },
          {
            "binary_name": "registry-tools",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.2"
          },
          {
            "binary_name": "samba",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.2"
          },
          {
            "binary_name": "samba-common",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.2"
          },
          {
            "binary_name": "samba-common-bin",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.2"
          },
          {
            "binary_name": "samba-dsdb-modules",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.2"
          },
          {
            "binary_name": "samba-libs",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.2"
          },
          {
            "binary_name": "samba-testsuite",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.2"
          },
          {
            "binary_name": "samba-vfs-modules",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.2"
          },
          {
            "binary_name": "smbclient",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.2"
          },
          {
            "binary_name": "winbind",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "samba",
        "purl": "pkg:deb/ubuntu/samba@2:4.15.13+dfsg-0ubuntu1.2?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:4.15.13+dfsg-0ubuntu1.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2:4.13.5+dfsg-2ubuntu2",
        "2:4.13.5+dfsg-2ubuntu3",
        "2:4.13.14+dfsg-0ubuntu1",
        "2:4.13.14+dfsg-0ubuntu2",
        "2:4.15.5~dfsg-0ubuntu1",
        "2:4.15.5~dfsg-0ubuntu2",
        "2:4.15.5~dfsg-0ubuntu4",
        "2:4.15.5~dfsg-0ubuntu5",
        "2:4.15.5~dfsg-0ubuntu5.1",
        "2:4.15.9+dfsg-0ubuntu0.2",
        "2:4.15.9+dfsg-0ubuntu0.3",
        "2:4.15.13+dfsg-0ubuntu1",
        "2:4.15.13+dfsg-0ubuntu1.1"
      ]
    }
  ],
  "aliases": [],
  "details": "It was discovered that Samba incorrectly handled Winbind NTLM\nauthentication responses. An attacker could possibly use this issue to\ncause Samba to crash, resulting in a denial of service. (CVE-2022-2127)\n\nAndreas Schneider discovered that Samba incorrectly enforced SMB2 packet\nsigning. A remote attacker could possibly use this issue to obtain or\nmodify sensitive information. This issue only affected Ubuntu 23.04.\n(CVE-2023-3347)\n\nFlorent Saudel and Arnaud Gatignolof discovered that Samba incorrectly\nhandled certain Spotlight requests. A remote attacker could possibly use\nthis issue to cause Samba to consume resources, leading to a denial of\nservice. (CVE-2023-34966, CVE-2023-34967)\n\nRalph Boehme and Stefan Metzmacher discovered that Samba incorrectly\nhandled paths returned by Spotlight requests. A remote attacker could\npossibly use this issue to obtain sensitive information. (CVE-2023-34968)\n",
  "id": "USN-6238-1",
  "modified": "2026-04-27T14:11:31Z",
  "published": "2023-07-19T14:45:02Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-6238-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2022-2127"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2023-3347"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2023-34966"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2023-34967"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2023-34968"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "samba vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2022-2127",
    "UBUNTU-CVE-2023-3347",
    "UBUNTU-CVE-2023-34966",
    "UBUNTU-CVE-2023-34967",
    "UBUNTU-CVE-2023-34968"
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

UBUNTU-CVE-2023-3347 (CVE-2023-3347)

CVE-2023-3347 (GCVE-0-2023-3347)

USN-6238-1 (UBUNTU-CVE-2022-2127)

Tags

Sightings

Nomenclature

Related by attack behaviour