CVE-2020-14383
ctdb: A flaw was found in samba's DNS server
CVE-2020-14383 is fixed in 18 products on 1 platform, first by ctdb 2:4.7.6+dfsg~ubuntu-0ubuntu2.21, released October 28, 2020. It is not reported as exploited. Patch Radar priority: Routine.
Routine
CVSS
n/a
Medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0221
82nd percentile
A flaw was found in samba's DNS server. An authenticated user could use this flaw to the RPC server to crash. This RPC server, which also serves protocols other than dnsserver, will be restarted after a short delay, but it is easy for an authenticated non administrative attacker to crash it again as soon as it returns. The Samba DNS server itself will continue to operate, but many RPC services will not.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| ctdb · Ubuntu 18.04.6 LTS (bionic) | 2:4.7.6+dfsg~ubuntu-0ubuntu2.21 | ctdb 2:4.7.6+dfsg~ubuntu-0ubuntu2.21 | Oct 28, 2020 |
| ctdb · Ubuntu 20.04 LTS (focal) | 2:4.11.6+dfsg-0ubuntu1.6 | ctdb 2:4.11.6+dfsg-0ubuntu1.6 | Oct 28, 2020 |
| libnss-winbind · Ubuntu 18.04.6 LTS (bionic) | 2:4.7.6+dfsg~ubuntu-0ubuntu2.21 | libnss-winbind 2:4.7.6+dfsg~ubuntu-0ubuntu2.21 | Oct 28, 2020 |
| libnss-winbind · Ubuntu 20.04 LTS (focal) | 2:4.11.6+dfsg-0ubuntu1.6 | libnss-winbind 2:4.11.6+dfsg-0ubuntu1.6 | Oct 28, 2020 |
| libpam-winbind · Ubuntu 18.04.6 LTS (bionic) | 2:4.7.6+dfsg~ubuntu-0ubuntu2.21 | libpam-winbind 2:4.7.6+dfsg~ubuntu-0ubuntu2.21 | Oct 28, 2020 |
| libpam-winbind · Ubuntu 20.04 LTS (focal) | 2:4.11.6+dfsg-0ubuntu1.6 | libpam-winbind 2:4.11.6+dfsg-0ubuntu1.6 | Oct 28, 2020 |
| libparse-pidl-perl · Ubuntu 18.04.6 LTS (bionic) | 2:4.7.6+dfsg~ubuntu-0ubuntu2.21 | libparse-pidl-perl 2:4.7.6+dfsg~ubuntu-0ubuntu2.21 | Oct 28, 2020 |
| libsmbclient · Ubuntu 18.04.6 LTS (bionic) | 2:4.7.6+dfsg~ubuntu-0ubuntu2.21 | libsmbclient 2:4.7.6+dfsg~ubuntu-0ubuntu2.21 | Oct 28, 2020 |
| libsmbclient · Ubuntu 20.04 LTS (focal) | 2:4.11.6+dfsg-0ubuntu1.6 | libsmbclient 2:4.11.6+dfsg-0ubuntu1.6 | Oct 28, 2020 |
| libwbclient0 · Ubuntu 18.04.6 LTS (bionic) | 2:4.7.6+dfsg~ubuntu-0ubuntu2.21 | libwbclient0 2:4.7.6+dfsg~ubuntu-0ubuntu2.21 | Oct 28, 2020 |
| libwbclient0 · Ubuntu 20.04 LTS (focal) | 2:4.11.6+dfsg-0ubuntu1.6 | libwbclient0 2:4.11.6+dfsg-0ubuntu1.6 | Oct 28, 2020 |
| python-samba · Ubuntu 18.04.6 LTS (bionic) | 2:4.7.6+dfsg~ubuntu-0ubuntu2.21 | python-samba 2:4.7.6+dfsg~ubuntu-0ubuntu2.21 | Oct 28, 2020 |
| python3-samba · Ubuntu 20.04 LTS (focal) | 2:4.11.6+dfsg-0ubuntu1.6 | python3-samba 2:4.11.6+dfsg-0ubuntu1.6 | Oct 28, 2020 |
| registry-tools · Ubuntu 18.04.6 LTS (bionic) | 2:4.7.6+dfsg~ubuntu-0ubuntu2.21 | registry-tools 2:4.7.6+dfsg~ubuntu-0ubuntu2.21 | Oct 28, 2020 |
| registry-tools · Ubuntu 20.04 LTS (focal) | 2:4.11.6+dfsg-0ubuntu1.6 | registry-tools 2:4.11.6+dfsg-0ubuntu1.6 | Oct 28, 2020 |
| samba · Ubuntu 18.04.6 LTS (bionic) | 2:4.7.6+dfsg~ubuntu-0ubuntu2.21 | samba 2:4.7.6+dfsg~ubuntu-0ubuntu2.21 | Oct 28, 2020 |
| samba · Ubuntu 20.04 LTS (focal) | 2:4.11.6+dfsg-0ubuntu1.6 | samba 2:4.11.6+dfsg-0ubuntu1.6 | Oct 28, 2020 |
| samba-common · Ubuntu 18.04.6 LTS (bionic) | 2:4.7.6+dfsg~ubuntu-0ubuntu2.21 | samba-common 2:4.7.6+dfsg~ubuntu-0ubuntu2.21 | Oct 28, 2020 |
| samba-common · Ubuntu 20.04 LTS (focal) | 2:4.11.6+dfsg-0ubuntu1.6 | samba-common 2:4.11.6+dfsg-0ubuntu1.6 | Oct 28, 2020 |
| samba-common-bin · Ubuntu 18.04.6 LTS (bionic) | 2:4.7.6+dfsg~ubuntu-0ubuntu2.21 | samba-common-bin 2:4.7.6+dfsg~ubuntu-0ubuntu2.21 | Oct 28, 2020 |
| samba-common-bin · Ubuntu 20.04 LTS (focal) | 2:4.11.6+dfsg-0ubuntu1.6 | samba-common-bin 2:4.11.6+dfsg-0ubuntu1.6 | Oct 28, 2020 |
| samba-dsdb-modules · Ubuntu 18.04.6 LTS (bionic) | 2:4.7.6+dfsg~ubuntu-0ubuntu2.21 | samba-dsdb-modules 2:4.7.6+dfsg~ubuntu-0ubuntu2.21 | Oct 28, 2020 |
| samba-dsdb-modules · Ubuntu 20.04 LTS (focal) | 2:4.11.6+dfsg-0ubuntu1.6 | samba-dsdb-modules 2:4.11.6+dfsg-0ubuntu1.6 | Oct 28, 2020 |
| samba-libs · Ubuntu 18.04.6 LTS (bionic) | 2:4.7.6+dfsg~ubuntu-0ubuntu2.21 | samba-libs 2:4.7.6+dfsg~ubuntu-0ubuntu2.21 | Oct 28, 2020 |
| samba-libs · Ubuntu 20.04 LTS (focal) | 2:4.11.6+dfsg-0ubuntu1.6 | samba-libs 2:4.11.6+dfsg-0ubuntu1.6 | Oct 28, 2020 |
| samba-testsuite · Ubuntu 18.04.6 LTS (bionic) | 2:4.7.6+dfsg~ubuntu-0ubuntu2.21 | samba-testsuite 2:4.7.6+dfsg~ubuntu-0ubuntu2.21 | Oct 28, 2020 |
| samba-testsuite · Ubuntu 20.04 LTS (focal) | 2:4.11.6+dfsg-0ubuntu1.6 | samba-testsuite 2:4.11.6+dfsg-0ubuntu1.6 | Oct 28, 2020 |
| samba-vfs-modules · Ubuntu 18.04.6 LTS (bionic) | 2:4.7.6+dfsg~ubuntu-0ubuntu2.21 | samba-vfs-modules 2:4.7.6+dfsg~ubuntu-0ubuntu2.21 | Oct 28, 2020 |
| samba-vfs-modules · Ubuntu 20.04 LTS (focal) | 2:4.11.6+dfsg-0ubuntu1.6 | samba-vfs-modules 2:4.11.6+dfsg-0ubuntu1.6 | Oct 28, 2020 |
| smbclient · Ubuntu 18.04.6 LTS (bionic) | 2:4.7.6+dfsg~ubuntu-0ubuntu2.21 | smbclient 2:4.7.6+dfsg~ubuntu-0ubuntu2.21 | Oct 28, 2020 |
| smbclient · Ubuntu 20.04 LTS (focal) | 2:4.11.6+dfsg-0ubuntu1.6 | smbclient 2:4.11.6+dfsg-0ubuntu1.6 | Oct 28, 2020 |
| winbind · Ubuntu 18.04.6 LTS (bionic) | 2:4.7.6+dfsg~ubuntu-0ubuntu2.21 | winbind 2:4.7.6+dfsg~ubuntu-0ubuntu2.21 | Oct 28, 2020 |
| winbind · Ubuntu 20.04 LTS (focal) | 2:4.11.6+dfsg-0ubuntu1.6 | winbind 2:4.11.6+dfsg-0ubuntu1.6 | Oct 28, 2020 |
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