CVE-2021-25313 : Security Advisory and Response
Learn about CVE-2021-25313, a high-severity Cross-Site Scripting vulnerability in Rancher versions prior to 2.5.6. Understand its impact, technical details, and mitigation strategies for enhanced security.
A detailed overview of CVE-2021-25313, a Cross-Site Scripting (XSS) vulnerability in Rancher affecting versions prior to 2.5.6.
Understanding CVE-2021-25313
This section delves into what CVE-2021-25313 entails in terms of impact, technical details, and mitigation strategies.
What is CVE-2021-25313?
The CVE-2021-25313 vulnerability involves an 'Improper Neutralization of Input During Web Page Generation' (Cross-Site Scripting) issue in Rancher software. Attackers can execute JavaScript through malicious links, affecting SUSE Rancher versions before 2.5.6.
The Impact of CVE-2021-25313
The impact of this vulnerability is rated as HIGH severity, with a CVSS base score of 7.1. It has a significant confidentiality impact and requires user interaction for exploitation.
Technical Details of CVE-2021-25313
This section provides technical insights into the vulnerability, including its description, affected systems, and exploitation mechanisms.
Vulnerability Description
The vulnerability allows remote attackers to inject malicious JavaScript via crafted links, leading to potential data theft or unauthorized actions within the system.
Affected Systems and Versions
SUSE Rancher versions prior to 2.5.6 are susceptible to this XSS vulnerability, making it crucial for users to upgrade to the secure version.
Exploitation Mechanism
By exploiting the XSS flaw, threat actors can trick users into clicking on specially crafted links, thus executing malicious scripts on the victim's browser.
Mitigation and Prevention
This section emphasizes the steps to mitigate the CVE-2021-25313 vulnerability and prevent future security risks.
Immediate Steps to Take
Users are advised to update Rancher to version 2.5.6 or newer to mitigate the XSS vulnerability and enhance system security.
Long-Term Security Practices
Implementing secure coding practices, regular security audits, and employee training on identifying phishing attempts can help fortify defense against XSS attacks.
Patching and Updates
Regularly monitor security advisories from Rancher and apply patches promptly to address any identified vulnerabilities and ensure system integrity.