CVE-2018-11383 : Security Advisory and Response

A vulnerability has been discovered in version 2.5.0 of radare2 that allows remote attackers to trigger a denial of service attack by exploiting a specific function.

Understanding CVE-2018-11383

This CVE involves a vulnerability in radare2 version 2.5.0 that can lead to a denial of service attack.

What is CVE-2018-11383?

The vulnerability in radare2 version 2.5.0 allows remote attackers to cause a denial of service by exploiting the r_strbuf_fini() function.

The Impact of CVE-2018-11383

By exploiting this vulnerability, remote attackers can trigger a denial of service attack, resulting in an invalid free and subsequent application crash.

Technical Details of CVE-2018-11383

This section provides technical details about the vulnerability.

Vulnerability Description

The vulnerability is caused by an uninitialized variable in the CPSE handler within the libr/anal/p/anal_avr.c component of radare2 version 2.5.0.

Affected Systems and Versions

Affected Version: 2.5.0 of radare2
Other versions may also be affected if they contain the same code.

Exploitation Mechanism

Remote attackers can exploit the r_strbuf_fini() function by providing a specifically crafted ELF file.

Mitigation and Prevention

To address CVE-2018-11383, follow these mitigation and prevention steps:

Immediate Steps to Take

Update radare2 to a patched version that addresses the vulnerability.
Avoid opening untrusted ELF files with radare2 until the patch is applied.

Long-Term Security Practices

Regularly update software to the latest versions to prevent known vulnerabilities.
Implement proper input validation mechanisms to prevent exploitation of similar vulnerabilities.

Patching and Updates

Apply patches provided by radare2 to fix the vulnerability.