CVE-2021-30648 : Security Advisory and Response
Learn about CVE-2021-30648 affecting ASG and ProxySG, allowing unauthenticated access to execute commands and manipulate settings. Take immediate steps to secure your systems.
Symantec Advanced Secure Gateway (ASG) and ProxySG web management consoles are affected by an authentication bypass vulnerability, allowing unauthenticated attackers to execute arbitrary CLI commands and manipulate appliance configurations.
Understanding CVE-2021-30648
This CVE identifies a critical security flaw in Symantec Advanced Secure Gateway (ASG) and ProxySG products.
What is CVE-2021-30648?
The vulnerability in ASG and ProxySG consoles enables unauthorized users to bypass authentication, execute malicious commands, and control appliance settings.
The Impact of CVE-2021-30648
Attackers can exploit this flaw to gain unauthorized access, modify configurations, policies, and even disrupt the appliance's operation by initiating shutdown or restart commands.
Technical Details of CVE-2021-30648
The following details outline the specific technical aspects of this CVE.
Vulnerability Description
The issue allows unauthenticated individuals to perform a range of unauthorized activities through the affected web management consoles of ASG and ProxySG.
Affected Systems and Versions
ASG versions 6.6, 6.7 (prior to 6.7.4.17 or 6.7.5.12), 7.2 (prior to 7.2.7.2), 7.3 (prior to 7.3.3.3), and ProxySG versions 6.5 (prior to 6.5.10.16), 6.6 (prior to 6.6.5.19), 6.7 (prior to 6.7.3.15, 6.7.4.17, or 6.7.5.12), 7.2 (prior to 7.2.7.2), 7.3 (prior to 7.3.3.3) are vulnerable to this security issue.
Exploitation Mechanism
By leveraging the authentication bypass vulnerability, attackers can gain unauthorized access to ASG and ProxySG consoles, leading to potential data breaches and system disruption.
Mitigation and Prevention
To protect systems from CVE-2021-30648, it is imperative to take immediate action and implement robust security measures.
Immediate Steps to Take
Organizations should apply security patches, closely monitor appliance logs for any suspicious activities, and restrict access to the vulnerable consoles.
Long-Term Security Practices
Regularly update ASG and ProxySG systems, conduct security audits, and enhance user authentication mechanisms to prevent similar exploits in the future.
Patching and Updates
Symantec or Broadcom, the parent company, may release security patches to address the vulnerability. Ensure timely installation of these updates to mitigate the risk of exploitation.