UBUNTU-CVE-2023-42670

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Source
https://ubuntu.com/security/notices/UBUNTU-CVE-2023-42670
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-42670.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2023-42670
Related
Published
2023-10-10T00:00:00Z
Modified
2023-10-10T00:00:00Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

A flaw was found in Samba. It is susceptible to a vulnerability where multiple incompatible RPC listeners can be initiated, causing disruptions in the AD DC service. When Samba's RPC server experiences a high load or unresponsiveness, servers intended for non-AD DC purposes (for example, NT4-emulation "classic DCs") can erroneously start and compete for the same unix domain sockets. This issue leads to partial query responses from the AD DC, causing issues such as "The procedure number is out of range" when using tools like Active Directory Users. This flaw allows an attacker to disrupt AD DC services.

References

Affected packages

Ubuntu:22.04:LTS / samba

Package

Name
samba
Purl
pkg:deb/ubuntu/samba@2:4.15.13+dfsg-0ubuntu1.5?arch=src?distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2:4.15.13+dfsg-0ubuntu1.5

Affected versions

2:4.*

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
2:4.15.13+dfsg-0ubuntu1.2
2:4.15.13+dfsg-0ubuntu1.3
2:4.15.13+dfsg-0ubuntu1.4

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "medium",
    "binaries": [
        {
            "libwbclient-dev": "2:4.15.13+dfsg-0ubuntu1.5",
            "samba-libs": "2:4.15.13+dfsg-0ubuntu1.5",
            "registry-tools": "2:4.15.13+dfsg-0ubuntu1.5",
            "samba-common-bin": "2:4.15.13+dfsg-0ubuntu1.5",
            "libwbclient0-dbgsym": "2:4.15.13+dfsg-0ubuntu1.5",
            "samba-dsdb-modules-dbgsym": "2:4.15.13+dfsg-0ubuntu1.5",
            "libpam-winbind-dbgsym": "2:4.15.13+dfsg-0ubuntu1.5",
            "libnss-winbind-dbgsym": "2:4.15.13+dfsg-0ubuntu1.5",
            "python3-samba-dbgsym": "2:4.15.13+dfsg-0ubuntu1.5",
            "winbind": "2:4.15.13+dfsg-0ubuntu1.5",
            "samba-vfs-modules": "2:4.15.13+dfsg-0ubuntu1.5",
            "samba-dbgsym": "2:4.15.13+dfsg-0ubuntu1.5",
            "samba-common-bin-dbgsym": "2:4.15.13+dfsg-0ubuntu1.5",
            "samba-testsuite": "2:4.15.13+dfsg-0ubuntu1.5",
            "smbclient-dbgsym": "2:4.15.13+dfsg-0ubuntu1.5",
            "libsmbclient": "2:4.15.13+dfsg-0ubuntu1.5",
            "samba": "2:4.15.13+dfsg-0ubuntu1.5",
            "libsmbclient-dev": "2:4.15.13+dfsg-0ubuntu1.5",
            "libwbclient0": "2:4.15.13+dfsg-0ubuntu1.5",
            "samba-dsdb-modules": "2:4.15.13+dfsg-0ubuntu1.5",
            "python3-samba": "2:4.15.13+dfsg-0ubuntu1.5",
            "samba-vfs-modules-dbgsym": "2:4.15.13+dfsg-0ubuntu1.5",
            "registry-tools-dbgsym": "2:4.15.13+dfsg-0ubuntu1.5",
            "ctdb": "2:4.15.13+dfsg-0ubuntu1.5",
            "libnss-winbind": "2:4.15.13+dfsg-0ubuntu1.5",
            "libsmbclient-dbgsym": "2:4.15.13+dfsg-0ubuntu1.5",
            "samba-libs-dbgsym": "2:4.15.13+dfsg-0ubuntu1.5",
            "winbind-dbgsym": "2:4.15.13+dfsg-0ubuntu1.5",
            "samba-testsuite-dbgsym": "2:4.15.13+dfsg-0ubuntu1.5",
            "samba-common": "2:4.15.13+dfsg-0ubuntu1.5",
            "libpam-winbind": "2:4.15.13+dfsg-0ubuntu1.5",
            "smbclient": "2:4.15.13+dfsg-0ubuntu1.5",
            "samba-dev": "2:4.15.13+dfsg-0ubuntu1.5",
            "ctdb-dbgsym": "2:4.15.13+dfsg-0ubuntu1.5"
        }
    ]
}