CVE-2021-1380 : What You Need to Know

Multiple vulnerabilities in the web-based management interface of Cisco Unified Communications Manager (Unified CM), Cisco Unified Communications Manager IM & Presence Service (Unified CM IM&P), Cisco Unified Communications Manager Session Management Edition (Unified CM SME), and Cisco Unity Connection could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against an interface user. These vulnerabilities exist due to improper validation of user-supplied input.

Understanding CVE-2021-1380

This CVE identifier pertains to multiple XSS vulnerabilities in various Cisco Unified Communications products, where an attacker could execute arbitrary script code through a crafted link.

What is CVE-2021-1380?

The CVE-2021-1380 vulnerability involves multiple XSS vulnerabilities in the web-based management interface of Cisco Unified Communications Manager products, potentially enabling remote attackers to execute arbitrary script code in the context of the affected interface.

The Impact of CVE-2021-1380

The impact of CVE-2021-1380 is rated as medium with a CVSS base score of 6.1. If successfully exploited, attackers can execute arbitrary script code in the context of the affected interface and access sensitive browser-based information.

Technical Details of CVE-2021-1380

These technical details shed light on the vulnerability description, affected systems and versions, as well as the exploitation mechanism.

Vulnerability Description

The vulnerability stems from a lack of proper validation of user-supplied input in the web-based management interface, making it susceptible to XSS attacks through crafted links.

Affected Systems and Versions

The affected product is Cisco Unity Connection, with the specific version being n/a.

Exploitation Mechanism

Attackers can exploit these vulnerabilities by convincing interface users to click on maliciously crafted links, leading to the execution of arbitrary script code.

Mitigation and Prevention

To prevent exploitation of CVE-2021-1380, it is crucial to take immediate steps, adopt long-term security practices, and ensure timely patching and updates.

Immediate Steps to Take

Organizations should educate users about the risks of clicking on unverified links and enhance security awareness to mitigate the risk of exploitation.

Long-Term Security Practices

Implementing strong input validation mechanisms, conducting regular security training, and enhancing incident response capabilities are essential for long-term security.

Patching and Updates

Regularly monitor for security advisories from Cisco and apply patches promptly to mitigate the risk associated with CVE-2021-1380.