CVE-2022-1240 : What You Need to Know

Heap buffer overflow vulnerability in libr/bin/format/mach0/mach0.c in radareorg/radare2 prior to version 5.8.6 can lead to remote code execution. Find out more about its impact, technical details, and mitigation steps.

Understanding CVE-2022-1240

This CVE involves a heap buffer overflow vulnerability in radareorg/radare2 before version 5.8.6.

What is CVE-2022-1240?

The vulnerability is located in the mach0.c file within the radareorg/radare2 GitHub repository. When compiled with address sanitizer disabled, the issue triggers the

r_str_ncpy

function, potentially leading to exploitation.

The Impact of CVE-2022-1240

With a CVSS base score of 7.6, this vulnerability has a high severity rating. It can result in a heap-based buffer overflow, allowing attackers to execute arbitrary code remotely. The attack vector is through the network, with high availability impact.

Technical Details of CVE-2022-1240

Let's dive into the specifics of this vulnerability.

Vulnerability Description

The vulnerability stems from a heap buffer overflow in the mach0.c file of radareorg/radare2 prior to version 5.8.6. This flaw can be exploited for remote code execution.

Affected Systems and Versions

Systems running radareorg/radare2 versions earlier than 5.8.6 are vulnerable to this exploit.

Exploitation Mechanism

By disabling address sanitizer during compilation, an attacker can utilize the

r_str_ncpy

function to exploit this heap buffer overflow.

Mitigation and Prevention

Learn how to protect your systems from CVE-2022-1240.

Immediate Steps to Take

Update radareorg/radare2 to version 5.8.6 or later to patch the vulnerability.
Enable address sanitizer during compilation to reduce the risk of heap buffer overflows.

Long-Term Security Practices

Implement secure coding practices and conduct regular security audits to detect and mitigate similar vulnerabilities in your codebase.

Patching and Updates

Stay informed about security updates for radareorg/radare2 to address any future vulnerabilities.