USN-4931-1
- 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.test.osv.dev/v1/vulns/USN-4931-1
- Upstream
- Related
- Published
- 2021-05-03T20:44:00.774074Z
- Modified
- 2025-10-14T16:38:12Z
- 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
-
Introduced0Unknown introduced version / All previous versions are affectedFixed2:4.3.11+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+esm1
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_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11",
"binary_name": "libnss-winbind"
},
{
"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-winbind"
},
{
"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": "libsmbclient"
},
{
"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": "libsmbsharemodes-dev"
},
{
"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": "libwbclient-dev"
},
{
"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": "python-samba"
},
{
"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": "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-dev"
},
{
"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-libs"
},
{
"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-vfs-modules"
},
{
"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": "winbind"
}
]
}
Database specific
cves_map
{
"cves": [
{
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"id": "CVE-2020-14318"
},
{
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"id": "CVE-2020-14323"
},
{
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"id": "CVE-2020-14383"
},
{
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"id": "CVE-2021-20254"
}
],
"ecosystem": "Ubuntu:Pro:14.04:LTS"
}