CVE-2020-27794 : Exploit Details and Defense Strategies

A double free vulnerability was discovered in radare2 that could potentially lead to memory corruption and system crashes.

Understanding CVE-2020-27794

This CVE involves a double free issue in radare2, which could be exploited to modify memory locations unexpectedly, possibly resulting in a system crash.

What is CVE-2020-27794?

CVE-2020-27794 is a vulnerability in radare2 that allows attackers to trigger a double free issue, leading to potential memory corruption and system instability.

The Impact of CVE-2020-27794

Exploiting this vulnerability could result in unauthorized modification of memory locations, potentially causing system crashes or other unexpected behavior.

Technical Details of CVE-2020-27794

This section provides technical details about the vulnerability.

Vulnerability Description

The vulnerability exists in radare2 in cmd_info.c:cmd_info(), where a double free issue can be triggered.

Affected Systems and Versions

Product: radare2
Version: Fixed in v4.4.0

Exploitation Mechanism

Successful exploitation of this vulnerability could allow an attacker to manipulate memory locations, leading to potential system crashes.

Mitigation and Prevention

Protecting systems from CVE-2020-27794 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply the patch provided by radare2 to fix the vulnerability.
Monitor for any unusual system behavior that could indicate exploitation.

Long-Term Security Practices

Regularly update software and apply security patches promptly.
Conduct security assessments and audits to identify and address vulnerabilities proactively.

Patching and Updates

Ensure that radare2 is updated to version 4.4.0 to mitigate the CVE-2020-27794 vulnerability.