CVE-2017-7716 Explained : Impact and Mitigation

A denial of service (DoS) vulnerability has been discovered in radare2 version 1.3.0, allowing remote attackers to exploit the read_u32_leb128 function and cause a heap-based buffer over-read and application crash.

Understanding CVE-2017-7716

This CVE identifies a specific vulnerability in radare2 version 1.3.0 that can be exploited remotely.

What is CVE-2017-7716?

The vulnerability lies in the read_u32_leb128 function within the libr/util/uleb128.c file of radare2 version 1.3.0. Attackers can trigger a denial of service by using a specially crafted Web Assembly file.

The Impact of CVE-2017-7716

Exploiting this vulnerability can lead to a heap-based buffer over-read, potentially resulting in an application crash.

Technical Details of CVE-2017-7716

This section delves into the technical aspects of the vulnerability.

Vulnerability Description

The read_u32_leb128 function in radare2 1.3.0 allows remote attackers to cause a denial of service through a crafted Web Assembly file.

Affected Systems and Versions

Affected Version: 1.3.0
Product: radare2
Vendor: N/A

Exploitation Mechanism

Attackers can exploit this vulnerability remotely by utilizing a specially crafted Web Assembly file.

Mitigation and Prevention

Protecting systems from CVE-2017-7716 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update radare2 to a patched version if available.
Implement network security measures to prevent remote exploitation.

Long-Term Security Practices

Regularly update software and apply security patches.
Conduct security assessments and penetration testing to identify vulnerabilities.

Patching and Updates

Stay informed about security updates for radare2 and promptly apply patches to mitigate the risk of exploitation.