High severity · published Mar 2, 2022
CVE-2021-23192
A flaw was found in the way samba implemented DCE/RPC
7.5
CVSS
2%
EPSS
No
On KEV
Description
A flaw was found in the way samba implemented DCE/RPC. If a client to a Samba server sent a very large DCE/RPC request, and chose to fragment it, an attacker could replace later fragments with their own data, bypassing the signature requirements.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.0% · higher than 80% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SA
Samba · Samba
4.10.0 before 4.13.14; 4.14.0 before 4.14.10; 4.15.0 before 4.15.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-23192
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-23192
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=2019666
security.gentoo.org
https://security.gentoo.org/glsa/202309-06
Third Party Advisory
https://ubuntu.com/security/CVE-2021-23192
Patch
https://www.samba.org/samba/security/CVE-2021-23192.html
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