CVE-2021-1153 : Security Advisory and Response

Multiple vulnerabilities in the web-based management interface of Cisco Small Business RV series routers could allow an authenticated, remote attacker to conduct cross-site scripting attacks. The vulnerabilities are a result of insufficient input validation, potentially enabling attackers to execute arbitrary script code or access sensitive information with administrator credentials.

Understanding CVE-2021-1153

This CVE highlights multiple vulnerabilities in Cisco Small Business RV series routers' web-based management interface, potentially exploitable by remote attackers with valid administrator credentials.

What is CVE-2021-1153?

The CVE-2021-1153 vulnerability pertains to cross-site scripting (XSS) flaws in the web-based management interface of Cisco Small Business RV series routers, allowing attackers to execute malicious scripts in the context of the affected interface.

The Impact of CVE-2021-1153

The impact of CVE-2021-1153 includes the ability for attackers to perform XSS attacks against users of the interface. If successfully exploited, attackers can execute arbitrary scripts or access sensitive information.

Technical Details of CVE-2021-1153

The technical details of CVE-2021-1153 shed light on the vulnerability description, affected systems and versions, as well as the exploitation mechanism.

Vulnerability Description

The vulnerabilities in the web-based management interface of Cisco Small Business RV series routers are due to insufficient input validation, enabling attackers to send crafted HTTP requests and potentially execute arbitrary script code.

Affected Systems and Versions

This vulnerability affects Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers with unspecified versions.

Exploitation Mechanism

Attackers with valid administrator credentials can exploit these vulnerabilities by sending crafted HTTP requests to the affected devices, allowing for the execution of arbitrary script code.

Mitigation and Prevention

Understanding how to mitigate and prevent CVE-2021-1153 is crucial to ensuring the security of affected systems and devices.

Immediate Steps to Take

Immediate steps to take include applying security patches provided by Cisco, monitoring network traffic for signs of exploitation, and restricting access to vulnerable interfaces.

Long-Term Security Practices

Adopting long-term security practices such as regular security updates, network segmentation, and security awareness training can help prevent similar vulnerabilities.

Patching and Updates

Regularly checking for patches and updates from Cisco, as well as staying informed about security advisories, is essential for maintaining the security of network devices.