CVE-2019-12790 : What You Need to Know
Learn about CVE-2019-12790, a heap-based buffer over-read vulnerability in radare2 versions 3.5.1 and later. Understand the impact, affected systems, exploitation mechanism, and mitigation steps.
From radare2 version 3.5.1 onwards, a heap-based buffer over-read vulnerability exists in the r_egg_lang_parsechar function of the egg_lang.c file. This flaw can be exploited by remote attackers to trigger a denial of service condition, potentially leading to application crashes. The absence of length validation in the libr/egg/egg.c module may result in other unspecified consequences.
Understanding CVE-2019-12790
This CVE involves a vulnerability in radare2 that could allow remote attackers to cause denial of service or other impacts.
What is CVE-2019-12790?
CVE-2019-12790 is a heap-based buffer over-read vulnerability in radare2 versions 3.5.1 and later. It stems from a lack of length validation in specific functions, potentially enabling remote attackers to disrupt services and cause application crashes.
The Impact of CVE-2019-12790
The vulnerability could lead to a denial of service condition, causing application crashes and potentially allowing attackers to execute arbitrary code or access sensitive information.
Technical Details of CVE-2019-12790
This section provides technical insights into the vulnerability.
Vulnerability Description
The vulnerability resides in the r_egg_lang_parsechar function of the egg_lang.c file within radare2, allowing for a heap-based buffer over-read.
Affected Systems and Versions
- Systems running radare2 version 3.5.1 and later are affected.
Exploitation Mechanism
- Remote attackers can exploit this vulnerability to trigger a denial of service condition by sending specially crafted requests that exploit the buffer over-read flaw.
Mitigation and Prevention
Protecting systems from CVE-2019-12790 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Update radare2 to a patched version that addresses the buffer over-read vulnerability.
- Implement network security measures to detect and block malicious traffic targeting this vulnerability.
Long-Term Security Practices
- Regularly update software and apply security patches to prevent known vulnerabilities.
- Conduct security assessments and penetration testing to identify and mitigate potential weaknesses in the system.
Patching and Updates
- Stay informed about security advisories and updates from radare2 to promptly apply patches that address CVE-2019-12790.