CVE-2020-25721
samba: Kerberos acceptors need easy access to stable AD identifiers (eg objectSid)
CVE-2020-25721 is fixed in 16 products on 1 platform, first by ctdb 2:4.13.14+dfsg-0ubuntu0.20.04.1, released November 8, 2021. It is not reported as exploited. Patch Radar priority: High.
High
CVSS
8.8
high
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0220
82nd percentile
Kerberos acceptors need easy access to stable AD identifiers (eg objectSid). Samba as an AD DC now provides a way for Linux applications to obtain a reliable SID (and samAccountName) in issued tickets.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| ctdb · Ubuntu 20.04 LTS (focal) | 2:4.13.14+dfsg-0ubuntu0.20.04.1 | ctdb 2:4.13.14+dfsg-0ubuntu0.20.04.1 | Nov 8, 2021 |
| ctdb · Ubuntu 22.04.1 LTS (jammy) | 2:4.13.14+dfsg-0ubuntu1 | ctdb 2:4.13.14+dfsg-0ubuntu1 | Nov 8, 2021 |
| libnss-winbind · Ubuntu 20.04 LTS (focal) | 2:4.13.14+dfsg-0ubuntu0.20.04.1 | libnss-winbind 2:4.13.14+dfsg-0ubuntu0.20.04.1 | Nov 8, 2021 |
| libnss-winbind · Ubuntu 22.04.1 LTS (jammy) | 2:4.13.14+dfsg-0ubuntu1 | libnss-winbind 2:4.13.14+dfsg-0ubuntu1 | Nov 8, 2021 |
| libpam-winbind · Ubuntu 20.04 LTS (focal) | 2:4.13.14+dfsg-0ubuntu0.20.04.1 | libpam-winbind 2:4.13.14+dfsg-0ubuntu0.20.04.1 | Nov 8, 2021 |
| libpam-winbind · Ubuntu 22.04.1 LTS (jammy) | 2:4.13.14+dfsg-0ubuntu1 | libpam-winbind 2:4.13.14+dfsg-0ubuntu1 | Nov 8, 2021 |
| libsmbclient · Ubuntu 20.04 LTS (focal) | 2:4.13.14+dfsg-0ubuntu0.20.04.1 | libsmbclient 2:4.13.14+dfsg-0ubuntu0.20.04.1 | Nov 8, 2021 |
| libsmbclient · Ubuntu 22.04.1 LTS (jammy) | 2:4.13.14+dfsg-0ubuntu1 | libsmbclient 2:4.13.14+dfsg-0ubuntu1 | Nov 8, 2021 |
| libwbclient0 · Ubuntu 20.04 LTS (focal) | 2:4.13.14+dfsg-0ubuntu0.20.04.1 | libwbclient0 2:4.13.14+dfsg-0ubuntu0.20.04.1 | Nov 8, 2021 |
| libwbclient0 · Ubuntu 22.04.1 LTS (jammy) | 2:4.13.14+dfsg-0ubuntu1 | libwbclient0 2:4.13.14+dfsg-0ubuntu1 | Nov 8, 2021 |
| python3-samba · Ubuntu 20.04 LTS (focal) | 2:4.13.14+dfsg-0ubuntu0.20.04.1 | python3-samba 2:4.13.14+dfsg-0ubuntu0.20.04.1 | Nov 8, 2021 |
| python3-samba · Ubuntu 22.04.1 LTS (jammy) | 2:4.13.14+dfsg-0ubuntu1 | python3-samba 2:4.13.14+dfsg-0ubuntu1 | Nov 8, 2021 |
| registry-tools · Ubuntu 20.04 LTS (focal) | 2:4.13.14+dfsg-0ubuntu0.20.04.1 | registry-tools 2:4.13.14+dfsg-0ubuntu0.20.04.1 | Nov 8, 2021 |
| registry-tools · Ubuntu 22.04.1 LTS (jammy) | 2:4.13.14+dfsg-0ubuntu1 | registry-tools 2:4.13.14+dfsg-0ubuntu1 | Nov 8, 2021 |
| samba · Debian 12.15 (bookworm) | 2:4.13.14+dfsg-1 | DEBIAN-CVE-2020-25721 | Mar 16, 2022 |
| samba · Debian 13.5 (trixie) | 2:4.13.14+dfsg-1 | DEBIAN-CVE-2020-25721 | Mar 16, 2022 |
| samba · Debian 14 | 2:4.13.14+dfsg-1 | DEBIAN-CVE-2020-25721 | Mar 16, 2022 |
| samba · Ubuntu 20.04 LTS (focal) | 2:4.13.14+dfsg-0ubuntu0.20.04.1 | samba 2:4.13.14+dfsg-0ubuntu0.20.04.1 | Nov 8, 2021 |
| samba · Ubuntu 22.04.1 LTS (jammy) | 2:4.13.14+dfsg-0ubuntu1 | samba 2:4.13.14+dfsg-0ubuntu1 | Nov 8, 2021 |
| samba-common · Ubuntu 20.04 LTS (focal) | 2:4.13.14+dfsg-0ubuntu0.20.04.1 | samba-common 2:4.13.14+dfsg-0ubuntu0.20.04.1 | Nov 8, 2021 |
| samba-common · Ubuntu 22.04.1 LTS (jammy) | 2:4.13.14+dfsg-0ubuntu1 | samba-common 2:4.13.14+dfsg-0ubuntu1 | Nov 8, 2021 |
| samba-common-bin · Ubuntu 20.04 LTS (focal) | 2:4.13.14+dfsg-0ubuntu0.20.04.1 | samba-common-bin 2:4.13.14+dfsg-0ubuntu0.20.04.1 | Nov 8, 2021 |
| samba-common-bin · Ubuntu 22.04.1 LTS (jammy) | 2:4.13.14+dfsg-0ubuntu1 | samba-common-bin 2:4.13.14+dfsg-0ubuntu1 | Nov 8, 2021 |
| samba-dsdb-modules · Ubuntu 20.04 LTS (focal) | 2:4.13.14+dfsg-0ubuntu0.20.04.1 | samba-dsdb-modules 2:4.13.14+dfsg-0ubuntu0.20.04.1 | Nov 8, 2021 |
| samba-dsdb-modules · Ubuntu 22.04.1 LTS (jammy) | 2:4.13.14+dfsg-0ubuntu1 | samba-dsdb-modules 2:4.13.14+dfsg-0ubuntu1 | Nov 8, 2021 |
| samba-libs · Ubuntu 20.04 LTS (focal) | 2:4.13.14+dfsg-0ubuntu0.20.04.1 | samba-libs 2:4.13.14+dfsg-0ubuntu0.20.04.1 | Nov 8, 2021 |
| samba-libs · Ubuntu 22.04.1 LTS (jammy) | 2:4.13.14+dfsg-0ubuntu1 | samba-libs 2:4.13.14+dfsg-0ubuntu1 | Nov 8, 2021 |
| samba-testsuite · Ubuntu 20.04 LTS (focal) | 2:4.13.14+dfsg-0ubuntu0.20.04.1 | samba-testsuite 2:4.13.14+dfsg-0ubuntu0.20.04.1 | Nov 8, 2021 |
| samba-testsuite · Ubuntu 22.04.1 LTS (jammy) | 2:4.13.14+dfsg-0ubuntu1 | samba-testsuite 2:4.13.14+dfsg-0ubuntu1 | Nov 8, 2021 |
| samba-vfs-modules · Ubuntu 20.04 LTS (focal) | 2:4.13.14+dfsg-0ubuntu0.20.04.1 | samba-vfs-modules 2:4.13.14+dfsg-0ubuntu0.20.04.1 | Nov 8, 2021 |
| samba-vfs-modules · Ubuntu 22.04.1 LTS (jammy) | 2:4.13.14+dfsg-0ubuntu1 | samba-vfs-modules 2:4.13.14+dfsg-0ubuntu1 | Nov 8, 2021 |
| smbclient · Ubuntu 20.04 LTS (focal) | 2:4.13.14+dfsg-0ubuntu0.20.04.1 | smbclient 2:4.13.14+dfsg-0ubuntu0.20.04.1 | Nov 8, 2021 |
| smbclient · Ubuntu 22.04.1 LTS (jammy) | 2:4.13.14+dfsg-0ubuntu1 | smbclient 2:4.13.14+dfsg-0ubuntu1 | Nov 8, 2021 |
| winbind · Ubuntu 20.04 LTS (focal) | 2:4.13.14+dfsg-0ubuntu0.20.04.1 | winbind 2:4.13.14+dfsg-0ubuntu0.20.04.1 | Nov 8, 2021 |
| winbind · Ubuntu 22.04.1 LTS (jammy) | 2:4.13.14+dfsg-0ubuntu1 | winbind 2:4.13.14+dfsg-0ubuntu1 | Nov 8, 2021 |
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