UBUNTU-CVE-2016-2110
- Source
- https://ubuntu.com/security/CVE-2016-2110
- Import Source
- https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2016/UBUNTU-CVE-2016-2110.json
- JSON Data
- https://api.osv.dev/v1/vulns/UBUNTU-CVE-2016-2110
- Upstream
- Downstream
- Related
- Published
- 2016-04-12T00:00:00Z
- Modified
- 2025-09-08T16:43:37Z
- Severity
-
- 5.9 (Medium) CVSS_V3 - CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N CVSS Calculator
- Ubuntu - medium
- Summary
- [none]
- Details
-
The NTLMSSP authentication implementation in Samba 3.x and 4.x before 4.2.11, 4.3.x before 4.3.8, and 4.4.x before 4.4.2 allows man-in-the-middle attackers to perform protocol-downgrade attacks by modifying the client-server data stream to remove application-layer flags or encryption settings, as demonstrated by clearing the NTLMSSPNEGOTIATESEAL or NTLMSSPNEGOTIATESIGN option to disrupt LDAP security.
- References
Affected packages
Ubuntu:14.04:LTS / samba
Package
- Name
- samba
- Purl
- pkg:deb/ubuntu/samba@2:4.3.8+dfsg-0ubuntu0.14.04.2?arch=source&distro=trusty
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed2:4.3.8+dfsg-0ubuntu0.14.04.2
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
Ecosystem specific
{
"binaries": [
{
"binary_version": "2:4.3.8+dfsg-0ubuntu0.14.04.2",
"binary_name": "libnss-winbind"
},
{
"binary_version": "2:4.3.8+dfsg-0ubuntu0.14.04.2",
"binary_name": "libpam-smbpass"
},
{
"binary_version": "2:4.3.8+dfsg-0ubuntu0.14.04.2",
"binary_name": "libpam-winbind"
},
{
"binary_version": "2:4.3.8+dfsg-0ubuntu0.14.04.2",
"binary_name": "libparse-pidl-perl"
},
{
"binary_version": "2:4.3.8+dfsg-0ubuntu0.14.04.2",
"binary_name": "libsmbclient"
},
{
"binary_version": "2:4.3.8+dfsg-0ubuntu0.14.04.2",
"binary_name": "libsmbclient-dev"
},
{
"binary_version": "2:4.3.8+dfsg-0ubuntu0.14.04.2",
"binary_name": "libsmbsharemodes-dev"
},
{
"binary_version": "2:4.3.8+dfsg-0ubuntu0.14.04.2",
"binary_name": "libsmbsharemodes0"
},
{
"binary_version": "2:4.3.8+dfsg-0ubuntu0.14.04.2",
"binary_name": "libwbclient-dev"
},
{
"binary_version": "2:4.3.8+dfsg-0ubuntu0.14.04.2",
"binary_name": "libwbclient0"
},
{
"binary_version": "2:4.3.8+dfsg-0ubuntu0.14.04.2",
"binary_name": "python-samba"
},
{
"binary_version": "2:4.3.8+dfsg-0ubuntu0.14.04.2",
"binary_name": "registry-tools"
},
{
"binary_version": "2:4.3.8+dfsg-0ubuntu0.14.04.2",
"binary_name": "samba"
},
{
"binary_version": "2:4.3.8+dfsg-0ubuntu0.14.04.2",
"binary_name": "samba-common"
},
{
"binary_version": "2:4.3.8+dfsg-0ubuntu0.14.04.2",
"binary_name": "samba-common-bin"
},
{
"binary_version": "2:4.3.8+dfsg-0ubuntu0.14.04.2",
"binary_name": "samba-dev"
},
{
"binary_version": "2:4.3.8+dfsg-0ubuntu0.14.04.2",
"binary_name": "samba-dsdb-modules"
},
{
"binary_version": "2:4.3.8+dfsg-0ubuntu0.14.04.2",
"binary_name": "samba-libs"
},
{
"binary_version": "2:4.3.8+dfsg-0ubuntu0.14.04.2",
"binary_name": "samba-testsuite"
},
{
"binary_version": "2:4.3.8+dfsg-0ubuntu0.14.04.2",
"binary_name": "samba-vfs-modules"
},
{
"binary_version": "2:4.3.8+dfsg-0ubuntu0.14.04.2",
"binary_name": "smbclient"
},
{
"binary_version": "2:4.3.8+dfsg-0ubuntu0.14.04.2",
"binary_name": "winbind"
}
],
"availability": "No subscription required"
}
Ubuntu:16.04:LTS / samba
Package
- Name
- samba
- Purl
- pkg:deb/ubuntu/samba@2:4.3.8+dfsg-0ubuntu1?arch=source&distro=xenial
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed2:4.3.8+dfsg-0ubuntu1
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
Ecosystem specific
{
"binaries": [
{
"binary_version": "2:4.3.8+dfsg-0ubuntu1",
"binary_name": "ctdb"
},
{
"binary_version": "2:4.3.8+dfsg-0ubuntu1",
"binary_name": "libnss-winbind"
},
{
"binary_version": "2:4.3.8+dfsg-0ubuntu1",
"binary_name": "libpam-winbind"
},
{
"binary_version": "2:4.3.8+dfsg-0ubuntu1",
"binary_name": "libparse-pidl-perl"
},
{
"binary_version": "2:4.3.8+dfsg-0ubuntu1",
"binary_name": "libsmbclient"
},
{
"binary_version": "2:4.3.8+dfsg-0ubuntu1",
"binary_name": "libsmbclient-dev"
},
{
"binary_version": "2:4.3.8+dfsg-0ubuntu1",
"binary_name": "libwbclient-dev"
},
{
"binary_version": "2:4.3.8+dfsg-0ubuntu1",
"binary_name": "libwbclient0"
},
{
"binary_version": "2:4.3.8+dfsg-0ubuntu1",
"binary_name": "python-samba"
},
{
"binary_version": "2:4.3.8+dfsg-0ubuntu1",
"binary_name": "registry-tools"
},
{
"binary_version": "2:4.3.8+dfsg-0ubuntu1",
"binary_name": "samba"
},
{
"binary_version": "2:4.3.8+dfsg-0ubuntu1",
"binary_name": "samba-common"
},
{
"binary_version": "2:4.3.8+dfsg-0ubuntu1",
"binary_name": "samba-common-bin"
},
{
"binary_version": "2:4.3.8+dfsg-0ubuntu1",
"binary_name": "samba-dev"
},
{
"binary_version": "2:4.3.8+dfsg-0ubuntu1",
"binary_name": "samba-dsdb-modules"
},
{
"binary_version": "2:4.3.8+dfsg-0ubuntu1",
"binary_name": "samba-libs"
},
{
"binary_version": "2:4.3.8+dfsg-0ubuntu1",
"binary_name": "samba-testsuite"
},
{
"binary_version": "2:4.3.8+dfsg-0ubuntu1",
"binary_name": "samba-vfs-modules"
},
{
"binary_version": "2:4.3.8+dfsg-0ubuntu1",
"binary_name": "smbclient"
},
{
"binary_version": "2:4.3.8+dfsg-0ubuntu1",
"binary_name": "winbind"
}
],
"availability": "No subscription required"
}