CVE-2022-36040 : What You Need to Know
Get insights into CVE-2022-36040, an out-of-bounds write vulnerability in Rizin affecting versions up to 0.4.0. Learn about the impact, mitigation steps, and long-term security practices.
This article provides detailed information about the Rizin Out-of-bounds Write vulnerability in pyc/marshal.c.
Understanding CVE-2022-36040
Rizin is a UNIX-like reverse engineering framework and command-line toolset. Versions 0.4.0 and prior are vulnerable to an out-of-bounds write when getting data from PYC (python) files. A user opening a malicious PYC file could be affected by this vulnerability, allowing an attacker to execute code on the user's machine. Commit number 68948017423a12786704e54227b8b2f918c2fd27 contains a patch.
What is CVE-2022-36040?
CVE-2022-36040 is an out-of-bounds write vulnerability in Rizin versions 0.4.0 and earlier when processing PYC files. It could lead to remote code execution on the user's machine by an attacker.
The Impact of CVE-2022-36040
The vulnerability poses a high impact, with a CVSS base score of 7.8 (High severity) based on the CVSS v3.1 metrics. It has a high impact on confidentiality, integrity, and availability of the affected systems.
Technical Details of CVE-2022-36040
Vulnerability Description
The vulnerability arises due to improper bounds checking when processing data from PYC files, leading to an out-of-bounds write scenario.
Affected Systems and Versions
The vulnerability affects Rizin versions up to and including 0.4.0.
Exploitation Mechanism
An attacker can exploit this vulnerability by crafting a specially designed malicious PYC file, tricking a user into opening the file, leading to potential code execution.
Mitigation and Prevention
Immediate Steps to Take
Users are advised to update Rizin to the latest version (post-patch commit 68948017423a12786704e54227b8b2f918c2fd27) to mitigate the vulnerability.
Long-Term Security Practices
To enhance security, users should exercise caution when handling files from untrusted sources and maintain updated security measures.
Patching and Updates
Regularly check for security advisories and updates from Rizin to address known vulnerabilities and apply patches promptly.