CVE-2020-6096 Explained : Impact and Mitigation
Learn about CVE-2020-6096, a signed comparison vulnerability in ARMv7 memcpy() of GNU glibc 2.30.9000, potentially leading to remote code execution. Find mitigation steps and affected versions here.
CVE-2020-6096 is a signed comparison vulnerability in the ARMv7 memcpy() implementation of GNU glibc 2.30.9000, potentially leading to remote code execution.
Understanding CVE-2020-6096
What is CVE-2020-6096?
An exploitable signed comparison vulnerability exists in the ARMv7 memcpy() implementation of GNU glibc 2.30.9000. This vulnerability arises when calling memcpy() with a negative value for the 'num' parameter, leading to undefined behavior and potential remote code execution.
The Impact of CVE-2020-6096
This vulnerability could result in writing to out-of-bounds memory, allowing attackers to execute malicious code and continue program execution despite potential crashes.
Technical Details of CVE-2020-6096
Vulnerability Description
The vulnerability stems from a signed comparison issue in the ARMv7 memcpy() implementation of GNU glibc 2.30.9000.
Affected Systems and Versions
- Vendor: GNU glibc
- Product: GNU glibc
- Versions Affected: 2.30.9000
Exploitation Mechanism
- Attackers can underflow the 'num' parameter to memcpy(), leading to undefined behavior and potential remote code execution.
Mitigation and Prevention
Immediate Steps to Take
- Apply the latest security updates provided by the vendor.
- Monitor vendor advisories for patches and mitigation strategies.
Long-Term Security Practices
- Regularly update software and libraries to patched versions.
- Implement secure coding practices to prevent similar vulnerabilities.
Patching and Updates
- Ensure timely installation of security patches released by GNU glibc.