CVE-2020-27793 : Security Advisory and Response
Learn about CVE-2020-27793, an off-by-one overflow flaw in radare2 that could lead to a denial of service attack. Find out how to mitigate and prevent exploitation of this vulnerability.
An off-by-one overflow flaw in radare2 could lead to a denial of service attack.
Understanding CVE-2020-27793
An off-by-one overflow flaw in radare2 could allow an attacker to crash the system and perform a denial of service attack.
What is CVE-2020-27793?
This CVE identifies an off-by-one overflow flaw in radare2 due to a mismatched array length in core_java.c.
The Impact of CVE-2020-27793
The vulnerability could be exploited by an attacker to cause a system crash and execute a denial of service attack.
Technical Details of CVE-2020-27793
The following are the technical details of CVE-2020-27793:
Vulnerability Description
An off-by-one overflow flaw was found in radare2 due to a mismatched array length in core_java.c.
Affected Systems and Versions
- Product: radare2
- Vendor: n/a
- Versions Affected: Fixed in v4.4.0
Exploitation Mechanism
The vulnerability could be exploited by an attacker to cause a crash and perform a denial of service attack.
Mitigation and Prevention
Here are the steps to mitigate and prevent exploitation of CVE-2020-27793:
Immediate Steps to Take
- Apply the patch provided by radare2 to fix the vulnerability.
- Monitor for any unusual system behavior that could indicate an attack.
Long-Term Security Practices
- Regularly update radare2 to the latest version to ensure all security patches are applied.
- Conduct security audits and code reviews to identify and address potential vulnerabilities.
Patching and Updates
Ensure that radare2 is regularly updated to the latest version to patch any known vulnerabilities.