CVE-2023-46848 : Security Advisory and Response

An in-depth look at CVE-2023-46848, a denial of service vulnerability in Squid affecting various Linux distributions.

Understanding CVE-2023-46848

This section provides detailed insights into the nature of the vulnerability.

What is CVE-2023-46848?

CVE-2023-46848 highlights a Denial of Service (DoS) vulnerability in Squid. Remote attackers can trigger the DoS by manipulating URLs in HTTP Request messages.

The Impact of CVE-2023-46848

The exploitation of this vulnerability can lead to service disruption and availability issues on affected systems.

Technical Details of CVE-2023-46848

Explore the technical aspects of the CVE for a better understanding.

Vulnerability Description

Squid is susceptible to a DoS attack caused by the mishandling of ftp:// URLs within HTTP Request messages.

Affected Systems and Versions

Squid 6.4: Unaffected
Red Hat Enterprise Linux 9: Affected versions include 7:5.5-5.el9_2.1, 7:5.5-6.el9_3.1
Red Hat Enterprise Linux 9.0 Extended Update Support: Vulnerable version is 7:5.2-1.el9_0.3

Exploitation Mechanism

Attackers can exploit this vulnerability by inserting ftp:// URLs in HTTP Request messages or crafting ftp:// URLs from FTP Native input.

Mitigation and Prevention

Discover the necessary steps to mitigate the impact of CVE-2023-46848.

Immediate Steps to Take

Apply the recommended patches provided by Red Hat immediately.
Implement network-level controls to filter out potentially malicious URLs.

Long-Term Security Practices

Regularly update Squid and operating systems to the latest secure versions.
Conduct security audits and vulnerability assessments periodically.

Patching and Updates

Keep track of security advisories from Red Hat and Squid to stay informed about patches and updates.