USN-4931-1

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Source
https://ubuntu.com/security/notices/USN-4931-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4931-1.json
JSON Data
https://api.osv.dev/v1/vulns/USN-4931-1
Upstream
Related
Published
2021-05-03T20:44:00.774074Z
Modified
2025-07-16T08:32:58.152600Z
Summary
samba vulnerabilities
Details

Steven French discovered that Samba incorrectly handled ChangeNotify permissions. A remote attacker could possibly use this issue to obtain file name information. (CVE-2020-14318)

Bas Alberts discovered that Samba incorrectly handled certain winbind requests. A remote attacker could possibly use this issue to cause winbind to crash, resulting in a denial of service. (CVE-2020-14323)

Francis Brosnan Blázquez discovered that Samba incorrectly handled certain invalid DNS records. A remote attacker could possibly use this issue to cause the DNS server to crash, resulting in a denial of service. (CVE-2020-14383)

Peter Eriksson discovered that Samba incorrectly handled certain negative idmap cache entries. This issue could result in certain users gaining unauthorized access to files, contrary to expected behaviour. (CVE-2021-20254)

References

Affected packages

Ubuntu:Pro:14.04:LTS / samba

Package

Name
samba
Purl
pkg:deb/ubuntu/samba@2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11?arch=source&distro=trusty/esm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11

Affected versions

2:3.*

2:3.6.18-1ubuntu3

2:4.*

2:4.0.10+dfsg-4ubuntu2
2:4.0.13+dfsg-1ubuntu1
2:4.1.3+dfsg-2ubuntu2
2:4.1.3+dfsg-2ubuntu3
2:4.1.3+dfsg-2ubuntu4
2:4.1.3+dfsg-2ubuntu5
2:4.1.6+dfsg-1ubuntu1
2:4.1.6+dfsg-1ubuntu2
2:4.1.6+dfsg-1ubuntu2.14.04.1
2:4.1.6+dfsg-1ubuntu2.14.04.2
2:4.1.6+dfsg-1ubuntu2.14.04.3
2:4.1.6+dfsg-1ubuntu2.14.04.4
2:4.1.6+dfsg-1ubuntu2.14.04.5
2:4.1.6+dfsg-1ubuntu2.14.04.7
2:4.1.6+dfsg-1ubuntu2.14.04.8
2:4.1.6+dfsg-1ubuntu2.14.04.9
2:4.1.6+dfsg-1ubuntu2.14.04.11
2:4.1.6+dfsg-1ubuntu2.14.04.12
2:4.1.6+dfsg-1ubuntu2.14.04.13
2:4.3.8+dfsg-0ubuntu0.14.04.2
2:4.3.9+dfsg-0ubuntu0.14.04.1
2:4.3.9+dfsg-0ubuntu0.14.04.3
2:4.3.11+dfsg-0ubuntu0.14.04.1
2:4.3.11+dfsg-0ubuntu0.14.04.2
2:4.3.11+dfsg-0ubuntu0.14.04.3
2:4.3.11+dfsg-0ubuntu0.14.04.4
2:4.3.11+dfsg-0ubuntu0.14.04.6
2:4.3.11+dfsg-0ubuntu0.14.04.7
2:4.3.11+dfsg-0ubuntu0.14.04.8
2:4.3.11+dfsg-0ubuntu0.14.04.9
2:4.3.11+dfsg-0ubuntu0.14.04.10
2:4.3.11+dfsg-0ubuntu0.14.04.11
2:4.3.11+dfsg-0ubuntu0.14.04.12
2:4.3.11+dfsg-0ubuntu0.14.04.13
2:4.3.11+dfsg-0ubuntu0.14.04.14
2:4.3.11+dfsg-0ubuntu0.14.04.16
2:4.3.11+dfsg-0ubuntu0.14.04.17
2:4.3.11+dfsg-0ubuntu0.14.04.19
2:4.3.11+dfsg-0ubuntu0.14.04.20
2:4.3.11+dfsg-0ubuntu0.14.04.20+esm2
2:4.3.11+dfsg-0ubuntu0.14.04.20+esm3
2:4.3.11+dfsg-0ubuntu0.14.04.20+esm4
2:4.3.11+dfsg-0ubuntu0.14.04.20+esm6
2:4.3.11+dfsg-0ubuntu0.14.04.20+esm7
2:4.3.11+dfsg-0ubuntu0.14.04.20+esm8
2:4.3.11+dfsg-0ubuntu0.14.04.20+esm9

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "libnss-winbind",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11"
        },
        {
            "binary_name": "libnss-winbind-dbgsym",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11"
        },
        {
            "binary_name": "libpam-smbpass",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11"
        },
        {
            "binary_name": "libpam-smbpass-dbgsym",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11"
        },
        {
            "binary_name": "libpam-winbind",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11"
        },
        {
            "binary_name": "libpam-winbind-dbgsym",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11"
        },
        {
            "binary_name": "libparse-pidl-perl",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11"
        },
        {
            "binary_name": "libparse-pidl-perl-dbgsym",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11"
        },
        {
            "binary_name": "libsmbclient",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11"
        },
        {
            "binary_name": "libsmbclient-dbgsym",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11"
        },
        {
            "binary_name": "libsmbclient-dev",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11"
        },
        {
            "binary_name": "libsmbclient-dev-dbgsym",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11"
        },
        {
            "binary_name": "libsmbsharemodes-dev",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11"
        },
        {
            "binary_name": "libsmbsharemodes-dev-dbgsym",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11"
        },
        {
            "binary_name": "libsmbsharemodes0",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11"
        },
        {
            "binary_name": "libsmbsharemodes0-dbgsym",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11"
        },
        {
            "binary_name": "libwbclient-dev",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11"
        },
        {
            "binary_name": "libwbclient-dev-dbgsym",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11"
        },
        {
            "binary_name": "libwbclient0",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11"
        },
        {
            "binary_name": "libwbclient0-dbgsym",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11"
        },
        {
            "binary_name": "python-samba",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11"
        },
        {
            "binary_name": "python-samba-dbgsym",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11"
        },
        {
            "binary_name": "registry-tools",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11"
        },
        {
            "binary_name": "registry-tools-dbgsym",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11"
        },
        {
            "binary_name": "samba",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11"
        },
        {
            "binary_name": "samba-common",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11"
        },
        {
            "binary_name": "samba-common-bin",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11"
        },
        {
            "binary_name": "samba-common-bin-dbgsym",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11"
        },
        {
            "binary_name": "samba-dbg",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11"
        },
        {
            "binary_name": "samba-dbgsym",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11"
        },
        {
            "binary_name": "samba-dev",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11"
        },
        {
            "binary_name": "samba-dev-dbgsym",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11"
        },
        {
            "binary_name": "samba-doc",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11"
        },
        {
            "binary_name": "samba-dsdb-modules",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11"
        },
        {
            "binary_name": "samba-dsdb-modules-dbgsym",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11"
        },
        {
            "binary_name": "samba-libs",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11"
        },
        {
            "binary_name": "samba-libs-dbgsym",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11"
        },
        {
            "binary_name": "samba-testsuite",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11"
        },
        {
            "binary_name": "samba-testsuite-dbgsym",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11"
        },
        {
            "binary_name": "samba-vfs-modules",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11"
        },
        {
            "binary_name": "samba-vfs-modules-dbgsym",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11"
        },
        {
            "binary_name": "smbclient",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11"
        },
        {
            "binary_name": "smbclient-dbgsym",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11"
        },
        {
            "binary_name": "winbind",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11"
        },
        {
            "binary_name": "winbind-dbgsym",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11"
        }
    ]
}