CVE-2021-27023 : Security Advisory and Response
Discover the details of CVE-2021-27023 where Puppet Agent and Puppet Server may expose HTTP credentials due to unsafe redirects. Learn about impacts, affected systems, exploitation, and mitigation.
A flaw was discovered in Puppet Agent and Puppet Server that may result in a leak of HTTP credentials when following HTTP redirects to a different host. This vulnerability is similar to CVE-2018-1000007.
Understanding CVE-2021-27023
This section will cover details about the vulnerability, its impact, technical description, affected systems, exploitation mechanism, mitigation, and prevention methods.
What is CVE-2021-27023?
CVE-2021-27023 involves a security issue in Puppet Agent and Puppet Server that could potentially lead to the exposure of HTTP credentials due to unsafe HTTP redirects.
The Impact of CVE-2021-27023
The impact of this CVE is significant as it could allow an attacker to obtain sensitive HTTP credentials by redirecting traffic to a malicious host, compromising the security and integrity of the affected systems.
Technical Details of CVE-2021-27023
Let's delve into the technical specifics of the CVE.
Vulnerability Description
The vulnerability in Puppet Agent and Puppet Server results in the leakage of HTTP credentials during HTTP redirects, posing a risk to the confidentiality of sensitive information.
Affected Systems and Versions
The flaw affects Puppet Enterprise, Puppet Server, and Puppet Agent versions prior to Puppet Enterprise 2019.8.9, Puppet Enterprise 2021.4, Puppet Server 6.17.1, 7.4.2, Puppet Agent 6.25.1, and 7.12.1.
Exploitation Mechanism
Attackers can exploit this vulnerability by leveraging unsafe HTTP redirects to intercept and extract HTTP credentials, leading to potential credential theft.
Mitigation and Prevention
Learn about the steps to mitigate the risks associated with CVE-2021-27023.
Immediate Steps to Take
Users should update Puppet Enterprise, Puppet Server, and Puppet Agent to the fixed versions to prevent HTTP credential leaks. Additionally, monitoring network traffic for suspicious activities is advisable.
Long-Term Security Practices
Implementing secure coding practices, conducting regular security audits, and educating users about safe browsing habits can help enhance overall security posture.
Patching and Updates
Ensure timely installation of security patches and updates released by Puppet to address CVE-2021-27023 and other vulnerabilities, thereby safeguarding systems from potential threats.