CVE-2020-8813 : Security Advisory and Response
Learn about CVE-2020-8813, a critical vulnerability in Cacti 1.2.8 that allows remote attackers to execute arbitrary OS commands. Find out how to mitigate this risk and secure your systems.
CVE-2020-8813 is a vulnerability found in Cacti 1.2.8 that allows remote attackers to execute arbitrary OS commands. This CVE was published on February 22, 2020, by MITRE.
Understanding CVE-2020-8813
This section provides insights into the nature and impact of the CVE.
What is CVE-2020-8813?
CVE-2020-8813 is a security flaw in Cacti 1.2.8 that enables attackers to run unauthorized operating system commands by exploiting shell metacharacters in a cookie. This vulnerability can be exploited if a guest user possesses the graph real-time privilege.
The Impact of CVE-2020-8813
The exploitation of this vulnerability can lead to remote code execution, allowing attackers to compromise the affected system and potentially gain unauthorized access to sensitive information.
Technical Details of CVE-2020-8813
This section delves into the technical aspects of the CVE.
Vulnerability Description
The vulnerability resides in the 'graph_realtime.php' file in Cacti 1.2.8, where remote attackers can leverage shell metacharacters in a cookie to execute arbitrary OS commands.
Affected Systems and Versions
- Vendor: n/a
- Product: n/a
- Versions: All versions are affected.
Exploitation Mechanism
The exploitation of CVE-2020-8813 involves injecting malicious shell metacharacters into a cookie, taking advantage of the graph real-time privilege granted to guest users.
Mitigation and Prevention
Protecting systems from CVE-2020-8813 requires immediate actions and long-term security measures.
Immediate Steps to Take
- Update Cacti to a patched version that addresses the vulnerability.
- Restrict access to the 'graph_realtime.php' file to authorized users only.
- Monitor system logs for any suspicious activities.
Long-Term Security Practices
- Regularly audit and review system configurations and permissions.
- Educate users on safe browsing habits and the importance of avoiding suspicious links or downloads.
Patching and Updates
- Apply security patches provided by Cacti promptly to mitigate the risk of exploitation.