CVE-2021-31583 : Security Advisory and Response

Sipwise C5 NGCP WWW Admin version 3.6.7 up to and including platform version NGCP CE 3.0 has multiple authenticated stored and reflected XSS vulnerabilities. This CVE poses a risk due to inadequate sanitization of user-input data.

Understanding CVE-2021-31583

This section delves into the implications, technical details, and mitigation strategies related to CVE-2021-31583.

What is CVE-2021-31583?

CVE-2021-31583 refers to authenticated stored and reflected XSS vulnerabilities in Sipwise C5 NGCP WWW Admin software versions 3.6.7 and below, including NGCP CE 3.0. These vulnerabilities stem from insufficient sanitization of user-supplied data.

The Impact of CVE-2021-31583

The vulnerabilities allow threat actors to execute malicious scripts in the context of legitimate users, potentially leading to unauthorized actions, account compromise, or sensitive data theft.

Technical Details of CVE-2021-31583

This part elucidates the specifics of the vulnerability, affected systems, versions, and exploitation vectors.

Vulnerability Description

The flaw arises from unsanitized input in various scripts, like 'callforward/time/set/save' and 'addressbook'. Malicious users can execute stored and reflected XSS attacks through these entry points.

Affected Systems and Versions

Sipwise C5 NGCP WWW Admin version 3.6.7 and NGCP CE 3.0 are susceptible to these XSS vulnerabilities.

Exploitation Mechanism

Threat actors can exploit the XSS weaknesses by injecting and executing malicious scripts through different parameters in vulnerable scripts.

Mitigation and Prevention

This section outlines immediate steps to secure systems and long-term security practices to mitigate the risks associated with CVE-2021-31583.

Immediate Steps to Take

To remediate the issue, organizations should validate and sanitize user inputs rigorously, apply security patches promptly, and educate users on safe browsing habits.

Long-Term Security Practices

Implementing secure coding practices, conducting regular security audits, and staying updated on security advisories are crucial for enhancing overall cybersecurity posture.

Patching and Updates

Installing security patches released by Sipwise promptly is vital to address the identified vulnerabilities and protect systems from potential exploitation.