CVE-2021-43690 : What You Need to Know
Learn about CVE-2021-43690, a Cross Site Scripting (XSS) vulnerability in YurunProxy v0.01. Understand the impact, technical details, and mitigation steps to secure your systems.
YurunProxy v0.01 is affected by a Cross Site Scripting (XSS) vulnerability in src/Client.php. The exit function will terminate the script and print a message that has values from the socket_read.
Understanding CVE-2021-43690
YurunProxy v0.01 has a security vulnerability that could lead to a Cross Site Scripting (XSS) attack.
What is CVE-2021-43690?
CVE-2021-43690 refers to a Cross Site Scripting (XSS) vulnerability present in YurunProxy v0.01, particularly in src/Client.php. Exploiting this vulnerability could allow an attacker to execute malicious scripts on the victim's browser.
The Impact of CVE-2021-43690
This vulnerability could result in unauthorized script execution on the victim's browser, leading to potential data theft, session hijacking, or unauthorized actions performed on behalf of the user.
Technical Details of CVE-2021-43690
YurunProxy v0.01 being affected by a Cross Site Scripting (XSS) vulnerability has the following technical details:
Vulnerability Description
The vulnerability exists in src/Client.php, where the exit function is utilized to terminate the script and print a message containing values from the socket_read method.
Affected Systems and Versions
- Affected Version: v0.01
- Affected Component: src/Client.php
- Vendor: n/a
Exploitation Mechanism
The vulnerability can be exploited through crafted input provided through the socket_read function, allowing malicious scripts to be injected and executed.
Mitigation and Prevention
To mitigate the CVE-2021-43690 vulnerability, follow these steps:
Immediate Steps to Take
- Update YurunProxy to the latest version.
- Avoid input of untrusted data into the socket_read function.
- Implement input validation to sanitize user inputs.
Long-Term Security Practices
- Conduct regular security audits and code reviews.
- Provide security awareness training to developers to prevent similar vulnerabilities.
Patching and Updates
- Monitor security advisories for YurunProxy and apply patches promptly to address known vulnerabilities.