CVE-2021-46825 : What You Need to Know
Learn about CVE-2021-46825 affecting Symantec Advanced Secure Gateway & ProxySG, with a high severity rating of 8.1. Take immediate steps to patch and secure the affected systems.
Symantec Advanced Secure Gateway (ASG) and ProxySG are susceptible to an HTTP desync vulnerability allowing remote unauthenticated attackers to forward web server responses to unintended clients.
Understanding CVE-2021-46825
What is CVE-2021-46825?
The vulnerability in Symantec ASG and ProxySG enables attackers to exploit an HTTP desync issue, potentially leading to information disclosure.
The Impact of CVE-2021-46825
The vulnerability is rated with a CVSSv3 score of 8.1 (High), posing risks of confidential data exposure and integrity compromise.
Technical Details of CVE-2021-46825
Vulnerability Description
- Attackers can send crafted HTTP requests through the proxy, causing it to forward server responses to unintended clients.
Affected Systems and Versions
- Products: Advance Secure Gateway and ProxySG
- Versions: 6.7, 7.3
Exploitation Mechanism
- By exploiting the HTTP desync vulnerability, remote unauthenticated attackers can intercept sensitive information.
Mitigation and Prevention
Immediate Steps to Take
- Update to the latest patched versions of Advance Secure Gateway and ProxySG.
- Monitor network traffic for unusual patterns.
Long-Term Security Practices
- Implement strict access controls and authentication mechanisms.
- Regularly conduct security assessments and audits.
Patching and Updates
- Stay informed about security advisories and promptly apply vendor-supplied patches.