Home/CVE/A flaw was found in the way Samba, as an Active Directory Domain Controller, implemented Kerberos name-based authenticat
CVE

CVE-2020-25719

A flaw was found in the way Samba, as an Active Directory Domain Controller, implemented Kerberos name-based authenticat

A flaw was found in the way Samba, as an Active Directory Domain Controller, implemented Kerberos name-based authentication. The Samba AD DC, could become confused about the user a ticket represents if it did not strictly require a Kerberos PAC and always use the SIDs found within. The result could include total domain compromise.

HIGH · CVSS 7.2 EPSS 0.00213
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-287Improper Authentication
CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
▤

Affected Products & Versions

19
samba>= 4.0.0 and < 4.13.14
samba>= 4.14.0 and < 4.14.10
samba>= 4.15.0 and < 4.15.2
debian linuxall versions
fedoraproject fedoraall versions
canonical ubuntu linuxall versions
redhat enterprise linuxall versions
redhat enterprise linux desktopall versions
▣

Scoring & Timeline

7.2
HIGH · CVSS v3.1 · secalert@redhat.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD18 Feb 2022 · 06:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
⚑

Vendor Advisories

10
msrcCVE-2020-25719
suse-csafopenSUSE-SU-2024:11631-1
suse-csafSUSE-SU-2022:0361-1
usnUSN-5142-1
suse-csafopenSUSE-SU-2021:3647-1
🔗

References & Sources

3
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://bugzilla.redhat.com/show_bug.cgi?id=2019732Issue TrackingPatchThird Party Advisory
https://security.gentoo.org/glsa/202309-06
https://www.samba.org/samba/security/CVE-2020-25719.htmlMitigationVendor Advisory
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