// For flags

CVE-2021-26731

spx_restservice modifyUserb_func Command Injection and Multiple Stack-Based Buffer Overflows

Severity Score

9.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

Command injection and multiple stack-based buffer overflows vulnerabilities in the modifyUserb_func function of spx_restservice allow an attacker to execute arbitrary code with the same privileges as the server user (root). This issue affects: Lanner Inc IAC-AST2500A standard firmware version 1.10.0.

Unas vulnerabilidades de inyección de comandos y de desbordamiento del búfer en la región stack de la memoria en la función modifyUserb_func de spx_restservice permiten a un atacante ejecutar código arbitrario con los mismos privilegios que el usuario del servidor (root). Este problema afecta: Lanner Inc IAC-AST2500A versión de firmware estándar 1.10.0

Command injection and multiple stack-based buffer overflows vulnerabilities in the modifyUserb_func function of spx_restservice allow an authenticated attacker to execute arbitrary code with the same privileges as the server user (root). This issue affects: Lanner Inc IAC-AST2500A standard firmware version 1.10.0.

*Credits: Andrea Palanca of Nozomi Networks found this bug during a security research activity.
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-02-05 CVE Reserved
  • 2022-10-24 CVE Published
  • 2024-05-16 EPSS Updated
  • 2024-09-30 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection')
  • CWE-94: Improper Control of Generation of Code ('Code Injection')
  • CWE-121: Stack-based Buffer Overflow
  • CWE-787: Out-of-bounds Write
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Lannerinc
Search vendor "Lannerinc"
 Iac-ast2500a Firmware
Search vendor "Lannerinc" for product "Iac-ast2500a Firmware"
 1.10.0
Search vendor "Lannerinc" for product "Iac-ast2500a Firmware" and version "1.10.0"
-
Affected
in Lannerinc
Search vendor "Lannerinc"
 Iac-ast2500a
Search vendor "Lannerinc" for product "Iac-ast2500a"
--
Safe