// For flags

CVE-2021-34978

NETGEAR R6260 setupwizard.cgi Stack-based Buffer Overflow Remote Code Execution Vulnerability

Severity Score

8.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R6260 1.1.0.78_1.0.1 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the setupwizard.cgi page. A crafted SOAP request can trigger an overflow of a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-13511.

Esta vulnerabilidad permite a atacantes adyacentes a la red ejecutar código arbitrario en las instalaciones afectadas de los routers NETGEAR R6260 versión 1.1.0.78_1.0.1. No es requerida una autenticación para explotar esta vulnerabilidad. El fallo específico se presenta en la página setupwizard.cgi. Una petición SOAP diseñada puede provocar un desbordamiento de un búfer de longitud fija en la región stack de la memoria. Un atacante puede aprovechar esta vulnerabilidad para ejecutar código en el contexto de root. Fue ZDI-CAN-13511

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R6260 routers. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the setupwizard.cgi page. A crafted SOAP request can trigger an overflow of a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root.

*Credits: Sherman Chann Zhi Shen & Hoang Thach Nguyen (d4rkn3ss)
CVSS Scores
Attack Vector
Adjacent
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Adjacent
Attack Complexity
Low
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-06-17 CVE Reserved
  • 2021-10-28 CVE Published
  • 2024-08-04 CVE Updated
  • 2024-09-28 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • 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
Netgear
Search vendor "Netgear"
 R6260 Firmware
Search vendor "Netgear" for product "R6260 Firmware"
 1.1.0.78_1.0.1
Search vendor "Netgear" for product "R6260 Firmware" and version "1.1.0.78_1.0.1"
-
Affected
in Netgear
Search vendor "Netgear"
 R6260
Search vendor "Netgear" for product "R6260"
--
Safe