USN-6425-2

See a problem?
Please try reporting it to the source first.
Source
https://ubuntu.com/security/notices/USN-6425-2
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-6425-2.json
JSON Data
https://api.osv.dev/v1/vulns/USN-6425-2
Published
2023-10-11T20:11:55Z
Modified
2026-04-22T10:40:34.023967Z
Summary
samba regression
Details

USN-6425-1 fixed vulnerabilities in Samba. Due to a build issue on Ubuntu 20.04 LTS, the update introduced regressions in macro handling and possibly other functionality.

This update fixes the problem. We apologize for the inconvenience.

Original advisory details:

Sri Nagasubramanian discovered that the Samba acl_xattr VFS module incorrectly handled read-only files. When Samba is configured to ignore system ACLs, a remote attacker could possibly use this issue to truncate read-only files. (CVE-2023-4091)

Andrew Bartlett discovered that Samba incorrectly handled the DirSync control. A remote attacker with an RODC DC account could possibly use this issue to obtain all domain secrets. (CVE-2023-4154)

Andrew Bartlett discovered that Samba incorrectly handled the rpcecho development server. A remote attacker could possibly use this issue to cause Samba to stop responding, resulting in a denial of service. (CVE-2023-42669)

Kirin van der Veer discovered that Samba incorrectly handled certain RPC service listeners. A remote attacker could possibly use this issue to cause Samba to start multiple incompatible RPC listeners, resulting in a denial of service. This issue only affected Ubuntu 22.04 LTS, and Ubuntu 23.04. (CVE-2023-42670)

References

Affected packages

Ubuntu:20.04:LTS / samba

Package

Name
samba
Purl
pkg:deb/ubuntu/samba@2:4.15.13+dfsg-0ubuntu0.20.04.7?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2:4.15.13+dfsg-0ubuntu0.20.04.7

Affected versions

2:4.*
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
2:4.15.13+dfsg-0ubuntu0.20.04.3
2:4.15.13+dfsg-0ubuntu0.20.04.4
2:4.15.13+dfsg-0ubuntu0.20.04.5
2:4.15.13+dfsg-0ubuntu0.20.04.6

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.7",
            "binary_name": "ctdb"
        },
        {
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.7",
            "binary_name": "libnss-winbind"
        },
        {
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.7",
            "binary_name": "libpam-winbind"
        },
        {
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.7",
            "binary_name": "libsmbclient"
        },
        {
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.7",
            "binary_name": "libwbclient0"
        },
        {
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.7",
            "binary_name": "python3-samba"
        },
        {
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.7",
            "binary_name": "registry-tools"
        },
        {
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.7",
            "binary_name": "samba"
        },
        {
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.7",
            "binary_name": "samba-common"
        },
        {
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.7",
            "binary_name": "samba-common-bin"
        },
        {
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.7",
            "binary_name": "samba-dsdb-modules"
        },
        {
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.7",
            "binary_name": "samba-libs"
        },
        {
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.7",
            "binary_name": "samba-testsuite"
        },
        {
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.7",
            "binary_name": "samba-vfs-modules"
        },
        {
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.7",
            "binary_name": "smbclient"
        },
        {
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.7",
            "binary_name": "winbind"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-6425-2.json"
cves_map 
{
    "ecosystem": "Ubuntu:20.04:LTS",
    "cves": []
}