// For flags

CVE-2021-23192

samba: Subsequent DCE/RPC fragment injection vulnerability

Severity Score

7.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

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.

Se ha encontrado un fallo en la forma en que samba implementa DCE/RPC. Si un cliente a un servidor Samba enviaba una petición DCE/RPC muy grande, y elegía fragmentarla, un atacante podía reemplazar los fragmentos posteriores con sus propios datos, omitiendo los requisitos de firma

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.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
Partial
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-10-20 CVE Reserved
  • 2021-11-11 CVE Published
  • 2024-08-03 CVE Updated
  • 2024-11-15 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-20: Improper Input Validation
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Samba
Search vendor "Samba"
 Samba
Search vendor "Samba" for product "Samba"
 >= 4.10.0 < 4.13.14
Search vendor "Samba" for product "Samba" and version " >= 4.10.0 < 4.13.14"
-
Affected
Samba
Search vendor "Samba"
 Samba
Search vendor "Samba" for product "Samba"
 >= 4.14.0 < 4.14.10
Search vendor "Samba" for product "Samba" and version " >= 4.14.0 < 4.14.10"
-
Affected
Samba
Search vendor "Samba"
 Samba
Search vendor "Samba" for product "Samba"
 >= 4.15.0 < 4.15.2
Search vendor "Samba" for product "Samba" and version " >= 4.15.0 < 4.15.2"
-
Affected