CVE-2019-12829 : Exploit Details and Defense Strategies

The RParse API in radare2 versions up to 3.5.1 has a mishandling issue that can be exploited by remote attackers, potentially leading to a denial of service or other impacts.

Understanding CVE-2019-12829

This CVE involves a vulnerability in radare2 that affects the RParse API, potentially resulting in a denial of service.

What is CVE-2019-12829?

The vulnerability in radare2 versions up to 3.5.1 allows remote attackers to exploit the RParse API, leading to a denial of service, application crashes, or other unspecified impacts. The issue specifically involves newstr buffer overflows during replace operations in files libr/asm/asm.c and libr/parse/parse.c.

The Impact of CVE-2019-12829

The vulnerability can result in a denial of service, causing application crashes and potentially leading to other unspecified impacts.

Technical Details of CVE-2019-12829

This section provides technical details about the vulnerability.

Vulnerability Description

The mishandling issue in the RParse API of radare2 versions up to 3.5.1 allows remote attackers to trigger newstr buffer overflows during replace operations, potentially causing a denial of service.

Affected Systems and Versions

Affected versions: radare2 up to 3.5.1
Affected files: libr/asm/asm.c and libr/parse/parse.c

Exploitation Mechanism

Remote attackers can exploit the vulnerability by triggering buffer overflows in the newstr during replace operations, leading to a denial of service.

Mitigation and Prevention

To address CVE-2019-12829, follow these mitigation strategies:

Immediate Steps to Take

Update radare2 to a version beyond 3.5.1 to mitigate the vulnerability.
Monitor for any unusual activities that could indicate an exploit attempt.

Long-Term Security Practices

Regularly update software and libraries to the latest versions to prevent known vulnerabilities.
Implement network security measures to detect and block malicious activities.

Patching and Updates

Apply patches provided by radare2 promptly to address the vulnerability and enhance system security.