External risk intelligence

Cisco Small Business Routers: Code Execution and Privilege Escalation Risk.

CVE advisoryKnown Exploit

CVE-2022-20701

Multiple vulnerabilities in Cisco Small Business routers could allow an attacker to execute arbitrary code, elevate privileges, or bypass security controls. This impacts affected organizations by risking unauthorized access and service disruption. The business risk involves potential compromise of network infrastructur

4Halo Surface Signal

Out-of-bounds Write

Cisco Rv340 Firmware

1.0.03.24 and earlier

External exposure likelihood

Halo Surface Signal score for CVE-2022-20701

The affected products are Cisco Small Business routers, which are network edge devices frequently deployed as internet-facing gateways to provide connectivity and remote access services for small business environments.

Horizon Alert

Summary of the vulnerability and why it matters

Multiple vulnerabilities exist within Cisco Small Business RV series routers. These flaws could allow an attacker to execute arbitrary code, elevate privileges, or bypass security controls. The potential impact includes unauthorized access and disruption of services for affected organizations.

  • Vulnerable Cisco Small Business routers
  • Flaw allows code execution and privilege escalation
  • Business risk of unauthorized access

Attack Path

How an attacker could exploit the issue

This vulnerability affects Cisco Small Business routers. An attacker could exploit this by leveraging local access to gain unauthorized control over the affected device. This could allow for the execution of arbitrary commands or code, potentially leading to elevated privileges or bypassing security measures.

  • Local attacker gains access.
  • Trigger action to gain control.
  • Execute code or commands.

Live Threat

Current exploitation, exposure, and threat context

Multiple vulnerabilities identified in Cisco Small Business routers could allow an attacker with administrative access to execute arbitrary code, elevate privileges, or cause a denial of service. These issues could impact the confidentiality, integrity, and availability of affected systems, posing a significant business risk. Organizations utilizing these devices should consider these vulnerabilities with urgency to prevent potential exploitation.

  • Likely attacker skill level: Administrator
  • Required access or conditions: Local access required
  • Business risk or urgency: High

Priority actions

Operational Fix

Recommended remediation, mitigation, and detection steps

Multiple vulnerabilities in Cisco Small Business RV Series Routers could enable an attacker to execute arbitrary code, elevate privileges, or cause a denial of service. These vulnerabilities present a risk to organizational security and operational continuity.

  • Identify Cisco RV Series Routers.
  • Isolate affected devices if possible.
  • Apply vendor updates and verify.
  • Monitor for related activity.

Frequently asked questions

What are the primary impacts of vulnerabilities found in Cisco Small Business RV series routers?

These vulnerabilities can allow an attacker to execute arbitrary code, elevate privileges, bypass authentication, fetch and run unsigned software, or cause a denial of service. This could lead to unauthorized access and disruption of services.

What types of weaknesses are present in the Cisco Small Business RV series routers?

The identified weaknesses include CWE-121, which relates to stack-based buffer overflows, and CWE-787, concerning out-of-bounds writes. These can be exploited to achieve code execution and privilege escalation.

How can an attacker exploit these vulnerabilities in Cisco Small Business RV series routers?

An attacker with local access can leverage these flaws to trigger actions that result in code execution or the ability to run arbitrary commands. The scope is limited to the affected device, but it can lead to elevated privileges or bypassing security controls.

What is the significance of the Halo Surface Signal score for these Cisco router vulnerabilities?

The Halo Surface Signal score indicates a 'Likely' threat due to the nature of the affected products. Cisco Small Business routers are often deployed as internet-facing gateways, making them attractive targets for attackers seeking to gain network access or disrupt services.

What steps should be taken to address the vulnerabilities in Cisco Small Business RV series routers?

Organizations should identify all affected Cisco RV Series routers, isolate them if possible, and promptly apply vendor-provided updates. Verifying the successful application of patches and monitoring for any suspicious activity are also crucial steps.

References