CVE-2017-6197 : Vulnerability Insights and Analysis
Learn about CVE-2017-6197, a vulnerability in radare2 version 1.2.1 that allows remote attackers to trigger a denial of service condition by exploiting a NULL pointer dereference, leading to an application crash. Find out how to mitigate this issue.
CVE-2017-6197 was published on February 24, 2017, and affects radare2 version 1.2.1. The vulnerability in the r_read_* functions of radare2 can be exploited by remote attackers to cause a denial of service by triggering a NULL pointer dereference, leading to an application crash.
Understanding CVE-2017-6197
This CVE entry highlights a vulnerability in radare2 version 1.2.1 that can be exploited remotely to trigger a denial of service condition.
What is CVE-2017-6197?
The vulnerability in the r_read_* functions of radare2 version 1.2.1 allows remote attackers to cause a denial of service by exploiting a NULL pointer dereference when processing a specially crafted binary file.
The Impact of CVE-2017-6197
The vulnerability can lead to a denial of service condition, resulting in an application crash due to a NULL pointer dereference triggered by the r_read_le32 function.
Technical Details of CVE-2017-6197
This section provides more technical insights into the vulnerability.
Vulnerability Description
The functions prefixed with r_read_* in the libr/include/r_endian.h file of radare2 version 1.2.1 have a vulnerability that allows remote attackers to trigger a denial of service condition by providing a specially crafted binary file.
Affected Systems and Versions
- Affected Version: radare2 version 1.2.1
- Systems: Not specified
Exploitation Mechanism
The vulnerability can be exploited by providing a specially crafted binary file as input, specifically when using the r_read_le32 function. This triggers a NULL pointer dereference, leading to an application crash.
Mitigation and Prevention
To address CVE-2017-6197, follow these mitigation strategies:
Immediate Steps to Take
- Update radare2 to a patched version.
- Avoid processing untrusted binary files.
Long-Term Security Practices
- Regularly update software and libraries.
- Implement input validation mechanisms.
Patching and Updates
Ensure that radare2 is regularly updated to the latest patched version to mitigate the vulnerability.