CVE-2023-46847 : Vulnerability Insights and Analysis
Learn about CVE-2023-46847, a Critical vulnerability in Squid that enables a remote attacker to trigger a Denial of Service attack via buffer overflow in HTTP digest authentication.
Squid: denial of service in HTTP digest authentication vulnerability is assigned CVE-2023-46847. It allows a remote attacker to trigger a Denial of Service (DoS) attack through buffer overflow in Squid when configured with HTTP Digest Authentication.
Understanding CVE-2023-46847
This section delves into what CVE-2023-46847 entails, its impact, technical details, and mitigation strategies.
What is CVE-2023-46847?
CVE-2023-46847 is a Critical vulnerability in Squid that enables a remote attacker to exploit buffer overflow, potentially causing a Denial of Service in systems using HTTP digest authentication.
The Impact of CVE-2023-46847
The vulnerability poses a HIGH risk due to a remote attacker's ability to write up to 2 MB of arbitrary data to heap memory. Understanding the potential impact is crucial for effective risk management.
Technical Details of CVE-2023-46847
Let's explore the specific technical aspects of CVE-2023-46847 to comprehend the vulnerability better.
Vulnerability Description
Squid is susceptible to a Denial of Service attack, allowing a remote attacker to exploit buffer overflow by writing significant data to heap memory.
Affected Systems and Versions
Red Hat Enterprise Linux systems, including 6, 7, 8, 8.1, 8.2, 8.4, 8.6, and Fedora, are affected. Specific versions of Squid in these environments require attention to mitigate the risk.
Exploitation Mechanism
The vulnerability can be exploited remotely by writing excessive data to heap memory through Squid's HTTP Digest Authentication setup.
Mitigation and Prevention
Understanding how to address CVE-2023-46847 is crucial in securing systems and reducing potential risks.
Immediate Steps to Take
Implement immediate measures such as applying security patches provided by Red Hat to mitigate the vulnerability's exploitation.
Long-Term Security Practices
Enhance overall system security through regular assessments, network segmentation, and intrusion detection mechanisms to prevent similar vulnerabilities.
Patching and Updates
Regularly check for security updates from Red Hat for Squid to address known vulnerabilities and safeguard systems against potential threats.