CVE-2017-6415 : What You Need to Know

A crafted DEX file can be used to trigger a denial of service in radare2 1.2.1 through the dex_parse_debug_item function in libr/bin/p/bin_dex.c. This can be done by causing a null pointer dereference and subsequent application crash.

Understanding CVE-2017-6415

The dex_parse_debug_item function in libr/bin/p/bin_dex.c in radare2 1.2.1 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a crafted DEX file.

What is CVE-2017-6415?

The vulnerability in radare2 1.2.1 allows for a denial of service attack by exploiting a crafted DEX file, leading to a null pointer dereference and application crash.

The Impact of CVE-2017-6415

This vulnerability can be exploited remotely by attackers to cause a denial of service, potentially disrupting the availability of the affected system.

Technical Details of CVE-2017-6415

The technical details of the CVE-2017-6415 vulnerability in radare2 1.2.1 are as follows:

Vulnerability Description

A crafted DEX file triggers a denial of service through the dex_parse_debug_item function.

Affected Systems and Versions

Affected Version: radare2 1.2.1

Exploitation Mechanism

Attackers can exploit this vulnerability remotely by using a specially crafted DEX file to trigger a null pointer dereference, leading to an application crash.

Mitigation and Prevention

To address CVE-2017-6415, consider the following mitigation strategies:

Immediate Steps to Take

Update radare2 to a non-vulnerable version.
Avoid opening untrusted DEX files.

Long-Term Security Practices

Regularly update software and libraries to patch known vulnerabilities.
Implement network security measures to prevent remote exploitation.

Patching and Updates

Apply patches provided by radare2 to fix the vulnerability and prevent exploitation.