UBUNTU-CVE-2020-10745

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Source
https://ubuntu.com/security/CVE-2020-10745
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-10745.json
JSON Data
https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2020-10745
Upstream
Downstream
Related
Published
2020-07-02T00:00:00Z
Modified
2025-10-14T16:49:27Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

A flaw was found in all Samba versions before 4.10.17, before 4.11.11 and before 4.12.4 in the way it processed NetBios over TCP/IP. This flaw allows a remote attacker could to cause the Samba server to consume excessive CPU use, resulting in a denial of service. This highest threat from this vulnerability is to system availability.

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+esm7?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+esm7

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

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+esm7",
            "binary_name": "libnss-winbind"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm7",
            "binary_name": "libpam-smbpass"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm7",
            "binary_name": "libpam-winbind"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm7",
            "binary_name": "libparse-pidl-perl"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm7",
            "binary_name": "libsmbclient"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm7",
            "binary_name": "libsmbclient-dev"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm7",
            "binary_name": "libsmbsharemodes-dev"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm7",
            "binary_name": "libsmbsharemodes0"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm7",
            "binary_name": "libwbclient-dev"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm7",
            "binary_name": "libwbclient0"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm7",
            "binary_name": "python-samba"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm7",
            "binary_name": "registry-tools"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm7",
            "binary_name": "samba"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm7",
            "binary_name": "samba-common"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm7",
            "binary_name": "samba-common-bin"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm7",
            "binary_name": "samba-dev"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm7",
            "binary_name": "samba-dsdb-modules"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm7",
            "binary_name": "samba-libs"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm7",
            "binary_name": "samba-testsuite"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm7",
            "binary_name": "samba-vfs-modules"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm7",
            "binary_name": "smbclient"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm7",
            "binary_name": "winbind"
        }
    ]
}

Ubuntu:16.04:LTS / samba

Package

Name
samba
Purl
pkg:deb/ubuntu/samba@2:4.3.11+dfsg-0ubuntu0.16.04.28?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2:4.3.11+dfsg-0ubuntu0.16.04.28

Affected versions

2:4.*

2:4.1.17+dfsg-4ubuntu2
2:4.1.20+dfsg-1ubuntu1
2:4.1.20+dfsg-1ubuntu2
2:4.1.20+dfsg-1ubuntu3
2:4.1.20+dfsg-1ubuntu5
2:4.3.3+dfsg-1ubuntu1
2:4.3.3+dfsg-1ubuntu2
2:4.3.3+dfsg-1ubuntu3
2:4.3.6+dfsg-1ubuntu1
2:4.3.8+dfsg-0ubuntu1
2:4.3.9+dfsg-0ubuntu0.16.04.1
2:4.3.9+dfsg-0ubuntu0.16.04.2
2:4.3.9+dfsg-0ubuntu0.16.04.3
2:4.3.11+dfsg-0ubuntu0.16.04.1
2:4.3.11+dfsg-0ubuntu0.16.04.3
2:4.3.11+dfsg-0ubuntu0.16.04.5
2:4.3.11+dfsg-0ubuntu0.16.04.6
2:4.3.11+dfsg-0ubuntu0.16.04.7
2:4.3.11+dfsg-0ubuntu0.16.04.8
2:4.3.11+dfsg-0ubuntu0.16.04.9
2:4.3.11+dfsg-0ubuntu0.16.04.10
2:4.3.11+dfsg-0ubuntu0.16.04.11
2:4.3.11+dfsg-0ubuntu0.16.04.12
2:4.3.11+dfsg-0ubuntu0.16.04.13
2:4.3.11+dfsg-0ubuntu0.16.04.15
2:4.3.11+dfsg-0ubuntu0.16.04.16
2:4.3.11+dfsg-0ubuntu0.16.04.17
2:4.3.11+dfsg-0ubuntu0.16.04.18
2:4.3.11+dfsg-0ubuntu0.16.04.19
2:4.3.11+dfsg-0ubuntu0.16.04.20
2:4.3.11+dfsg-0ubuntu0.16.04.21
2:4.3.11+dfsg-0ubuntu0.16.04.23
2:4.3.11+dfsg-0ubuntu0.16.04.24
2:4.3.11+dfsg-0ubuntu0.16.04.25
2:4.3.11+dfsg-0ubuntu0.16.04.26
2:4.3.11+dfsg-0ubuntu0.16.04.27

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.28",
            "binary_name": "ctdb"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.28",
            "binary_name": "libnss-winbind"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.28",
            "binary_name": "libpam-winbind"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.28",
            "binary_name": "libparse-pidl-perl"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.28",
            "binary_name": "libsmbclient"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.28",
            "binary_name": "libsmbclient-dev"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.28",
            "binary_name": "libwbclient-dev"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.28",
            "binary_name": "libwbclient0"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.28",
            "binary_name": "python-samba"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.28",
            "binary_name": "registry-tools"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.28",
            "binary_name": "samba"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.28",
            "binary_name": "samba-common"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.28",
            "binary_name": "samba-common-bin"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.28",
            "binary_name": "samba-dev"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.28",
            "binary_name": "samba-dsdb-modules"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.28",
            "binary_name": "samba-libs"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.28",
            "binary_name": "samba-testsuite"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.28",
            "binary_name": "samba-vfs-modules"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.28",
            "binary_name": "smbclient"
        },
        {
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.28",
            "binary_name": "winbind"
        }
    ]
}

Ubuntu:18.04:LTS / samba

Package

Name
samba
Purl
pkg:deb/ubuntu/samba@2:4.7.6+dfsg~ubuntu-0ubuntu2.17?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2:4.7.6+dfsg~ubuntu-0ubuntu2.17

Affected versions

2:4.*

2:4.6.7+dfsg-1ubuntu3
2:4.7.1+dfsg-1ubuntu1
2:4.7.3+dfsg-1ubuntu1
2:4.7.4+dfsg-1ubuntu1
2:4.7.6+dfsg~ubuntu-0ubuntu1
2:4.7.6+dfsg~ubuntu-0ubuntu2
2:4.7.6+dfsg~ubuntu-0ubuntu2.2
2:4.7.6+dfsg~ubuntu-0ubuntu2.4
2:4.7.6+dfsg~ubuntu-0ubuntu2.5
2:4.7.6+dfsg~ubuntu-0ubuntu2.6
2:4.7.6+dfsg~ubuntu-0ubuntu2.7
2:4.7.6+dfsg~ubuntu-0ubuntu2.9
2:4.7.6+dfsg~ubuntu-0ubuntu2.10
2:4.7.6+dfsg~ubuntu-0ubuntu2.11
2:4.7.6+dfsg~ubuntu-0ubuntu2.13
2:4.7.6+dfsg~ubuntu-0ubuntu2.14
2:4.7.6+dfsg~ubuntu-0ubuntu2.15
2:4.7.6+dfsg~ubuntu-0ubuntu2.16

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.17",
            "binary_name": "ctdb"
        },
        {
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.17",
            "binary_name": "libnss-winbind"
        },
        {
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.17",
            "binary_name": "libpam-winbind"
        },
        {
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.17",
            "binary_name": "libparse-pidl-perl"
        },
        {
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.17",
            "binary_name": "libsmbclient"
        },
        {
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.17",
            "binary_name": "libsmbclient-dev"
        },
        {
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.17",
            "binary_name": "libwbclient-dev"
        },
        {
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.17",
            "binary_name": "libwbclient0"
        },
        {
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.17",
            "binary_name": "python-samba"
        },
        {
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.17",
            "binary_name": "registry-tools"
        },
        {
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.17",
            "binary_name": "samba"
        },
        {
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.17",
            "binary_name": "samba-common"
        },
        {
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.17",
            "binary_name": "samba-common-bin"
        },
        {
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.17",
            "binary_name": "samba-dev"
        },
        {
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.17",
            "binary_name": "samba-dsdb-modules"
        },
        {
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.17",
            "binary_name": "samba-libs"
        },
        {
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.17",
            "binary_name": "samba-testsuite"
        },
        {
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.17",
            "binary_name": "samba-vfs-modules"
        },
        {
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.17",
            "binary_name": "smbclient"
        },
        {
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.17",
            "binary_name": "winbind"
        }
    ]
}

Ubuntu:20.04:LTS / samba

Package

Name
samba
Purl
pkg:deb/ubuntu/samba@2:4.11.6+dfsg-0ubuntu1.3?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2:4.11.6+dfsg-0ubuntu1.3

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

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "2:4.11.6+dfsg-0ubuntu1.3",
            "binary_name": "ctdb"
        },
        {
            "binary_version": "2:4.11.6+dfsg-0ubuntu1.3",
            "binary_name": "libnss-winbind"
        },
        {
            "binary_version": "2:4.11.6+dfsg-0ubuntu1.3",
            "binary_name": "libpam-winbind"
        },
        {
            "binary_version": "2:4.11.6+dfsg-0ubuntu1.3",
            "binary_name": "libsmbclient"
        },
        {
            "binary_version": "2:4.11.6+dfsg-0ubuntu1.3",
            "binary_name": "libsmbclient-dev"
        },
        {
            "binary_version": "2:4.11.6+dfsg-0ubuntu1.3",
            "binary_name": "libwbclient-dev"
        },
        {
            "binary_version": "2:4.11.6+dfsg-0ubuntu1.3",
            "binary_name": "libwbclient0"
        },
        {
            "binary_version": "2:4.11.6+dfsg-0ubuntu1.3",
            "binary_name": "python3-samba"
        },
        {
            "binary_version": "2:4.11.6+dfsg-0ubuntu1.3",
            "binary_name": "registry-tools"
        },
        {
            "binary_version": "2:4.11.6+dfsg-0ubuntu1.3",
            "binary_name": "samba"
        },
        {
            "binary_version": "2:4.11.6+dfsg-0ubuntu1.3",
            "binary_name": "samba-common"
        },
        {
            "binary_version": "2:4.11.6+dfsg-0ubuntu1.3",
            "binary_name": "samba-common-bin"
        },
        {
            "binary_version": "2:4.11.6+dfsg-0ubuntu1.3",
            "binary_name": "samba-dev"
        },
        {
            "binary_version": "2:4.11.6+dfsg-0ubuntu1.3",
            "binary_name": "samba-dsdb-modules"
        },
        {
            "binary_version": "2:4.11.6+dfsg-0ubuntu1.3",
            "binary_name": "samba-libs"
        },
        {
            "binary_version": "2:4.11.6+dfsg-0ubuntu1.3",
            "binary_name": "samba-testsuite"
        },
        {
            "binary_version": "2:4.11.6+dfsg-0ubuntu1.3",
            "binary_name": "samba-vfs-modules"
        },
        {
            "binary_version": "2:4.11.6+dfsg-0ubuntu1.3",
            "binary_name": "smbclient"
        },
        {
            "binary_version": "2:4.11.6+dfsg-0ubuntu1.3",
            "binary_name": "winbind"
        }
    ]
}