SB2021082201 - Remote code execution in Cisco Small Business Routers UPnP service 

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Main Vulnerability Database SB2021082201

SB2021082201 - Remote code execution in Cisco Small Business Routers UPnP service

Published: August 22, 2021 Updated: September 30, 2021

Security Bulletin ID SB2021082201
Severity
Critical
Patch available
NO
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

Critical 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 security vulnerability.


1) Stack-based buffer overflow (CVE-ID: CVE-2021-34730)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in the Universal Plug-and-Play (UPnP) service. A remote unauthenticated attacker can send a specially crafted UPnP request to an affected device, trigger stack-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


Remediation

Cybersecurity Help is not aware of any official remediation provided by the vendor.

References