CVE-2021-46489 : Exploit Details and Defense Strategies
Learn about CVE-2021-46489, a heap-use-after-free vulnerability in Jsish v3.5.0 that could lead to a Denial of Service (DoS) attack. Find out about the impact, affected systems, exploitation, and mitigation steps.
Jsish v3.5.0 contains a heap-use-after-free vulnerability that can lead to a Denial of Service (DoS).
Understanding CVE-2021-46489
What is CVE-2021-46489?
Jsish v3.5.0 was found to have a heap-use-after-free vulnerability through Jsi_DecrRefCount in src/jsiValue.c, potentially resulting in a DoS attack.
The Impact of CVE-2021-46489
This vulnerability could allow an attacker to cause a system crash or disrupt services, leading to a denial of service.
Technical Details of CVE-2021-46489
Vulnerability Description
The issue lies in Jsish v3.5.0 due to improper handling of memory after it has been freed, which could be exploited by attackers.
Affected Systems and Versions
- Affected Version: Jsish v3.5.0
Exploitation Mechanism
Attackers can exploit this vulnerability by triggering a use-after-free condition, potentially causing a system crash or service disruption.
Mitigation and Prevention
Immediate Steps to Take
- Update Jsish to the latest version available.
- Monitor for any unusual system behavior that might indicate a DoS attack.
Long-Term Security Practices
- Regularly monitor and update software to patch known vulnerabilities.
- Implement proper input validation and memory management practices.
Patching and Updates
Update Jsish to the latest version that includes a patch for CVE-2021-46489.