Medium severity · published Mar 6, 2023
CVE-2021-20251
A flaw was found in samba
5.9
CVSS
0.8%
EPSS
No
On KEV
Description
A flaw was found in samba. A race condition in the password lockout code may lead to the risk of brute force attacks being successful if special conditions are met.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.8% · higher than 55% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FE
Fedora · Fedoraproject
37 · source: NVD
SA
Samba · Samba
4.1.0 before 4.16.8; 4.17.0 before 4.17.4 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-20251
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-20251
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=1929800
Exploit
https://bugzilla.samba.org/show_bug.cgi?id=14611
security.gentoo.org
https://security.gentoo.org/glsa/202309-06
Third Party Advisory
https://security.netapp.com/advisory/ntap-20230331-0005/
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