CVE-2021-46020 : What You Need to Know
Learn about CVE-2021-46020, an untrusted pointer dereference vulnerability in mrb_vm_exec() of mruby v3.0.0 that can lead to a segmentation fault or application crash. Find mitigation steps and prevention measures.
An untrusted pointer dereference in mrb_vm_exec() of mruby v3.0.0 can lead to a segmentation fault or application crash.
Understanding CVE-2021-46020
This CVE involves a vulnerability in the mruby v3.0.0 version that can result in a segmentation fault or application crash.
What is CVE-2021-46020?
The CVE-2021-46020 is an untrusted pointer dereference vulnerability in mrb_vm_exec() of mruby v3.0.0.
The Impact of CVE-2021-46020
The vulnerability can lead to a segmentation fault or application crash, potentially disrupting the normal operation of affected systems.
Technical Details of CVE-2021-46020
The technical details of this CVE are as follows:
Vulnerability Description
The vulnerability involves an untrusted pointer dereference in mrb_vm_exec() function of mruby v3.0.0.
Affected Systems and Versions
- Affected Version: mruby v3.0.0
- Affected Products: Not applicable
- Affected Vendor: Not applicable
Exploitation Mechanism
The vulnerability can be exploited by leveraging the untrusted pointer to execute malicious code, causing a segmentation fault or application crash.
Mitigation and Prevention
To address CVE-2021-46020, consider the following:
Immediate Steps to Take
- Patch mruby to the latest version that includes a fix for the vulnerability.
- Implement proper input validation mechanisms to prevent untrusted pointer dereference.
Long-Term Security Practices
- Regularly update software and libraries to prevent known vulnerabilities.
- Conduct security audits and code reviews to identify and address potential vulnerabilities.
Patching and Updates
Ensure timely patching of software and apply updates provided by the mruby project to mitigate the vulnerability.