CVE-2023-31483 : Security Advisory and Response

A directory traversal vulnerability in Cauldron cbang before bastet-v8.1.17 can lead to remote code execution by allowing an attacker to create or modify files outside the intended directory via a specially crafted tar archive.

Understanding CVE-2023-31483

This section provides insights into the impact and technical details of the CVE.

What is CVE-2023-31483?

CVE-2023-31483 refers to a directory traversal flaw in tar/TarFileReader.cpp in Cauldron cbang before bastet-v8.1.17, enabling an attacker to manipulate files outside the desired directory using a malicious tar archive.

The Impact of CVE-2023-31483

The vulnerability can be exploited by threat actors to compromise the integrity and confidentiality of data, potentially leading to unauthorized access, data modifications, or remote code execution.

Technical Details of CVE-2023-31483

Unpacking the technical specifics of the vulnerability.

Vulnerability Description

The flaw in TarFileReader.cpp permits attackers to traverse directories and tamper with files outside the designated scope, thereby facilitating unauthorized file creation or modification.

Affected Systems and Versions

All Cauldron cbang instances prior to the bastet-v8.1.17 release are susceptible to this vulnerability.

Exploitation Mechanism

By crafting a malicious tar archive, threat actors can trick the vulnerable application into extracting files to unauthorized locations, executing unauthorized code.

Mitigation and Prevention

Guidelines to address and prevent the CVE vulnerability.

Immediate Steps to Take

Update Cauldron cbang to version bastet-v8.1.17 or the latest available patch.
Implement network-level security controls to detect and block anomalous file operations.

Long-Term Security Practices

Regularly monitor security mailing lists and CVE databases for emerging vulnerabilities.
Conduct routine security audits and penetration testing to identify and remediate system weaknesses.

Patching and Updates

Stay vigilant for security updates and patches from Cauldron Development LLC, ensuring timely application to safeguard against known vulnerabilities.