CVE-2021-46498 : Security Advisory and Response
Learn about CVE-2021-46498, a heap-use-after-free vulnerability in Jsish v3.5.0 that could lead to a Denial of Service attack. Find mitigation steps and preventive measures.
Jsish v3.5.0 was discovered to contain a heap-use-after-free vulnerability that can lead to a Denial of Service (DoS).
Understanding CVE-2021-46498
What is CVE-2021-46498?
CVE-2021-46498 is a vulnerability found in Jsish v3.5.0 due to a heap-use-after-free issue in jsi_wswebsocketObjFree in src/jsiWebSocket.c, potentially resulting in a Denial of Service.
The Impact of CVE-2021-46498
This vulnerability could be exploited by attackers to cause a DoS, disrupting the normal functioning of the affected system.
Technical Details of CVE-2021-46498
Vulnerability Description
Jsish v3.5.0 is affected by a heap-use-after-free vulnerability via jsi_wswebsocketObjFree, located in src/jsiWebSocket.c, which could be leveraged for a DoS attack.
Affected Systems and Versions
- Product: Jsish
- Version: 3.5.0
Exploitation Mechanism
The vulnerability can be exploited by manipulating the websocket object in a way that triggers the use-after-free condition, leading to a DoS situation.
Mitigation and Prevention
Immediate Steps to Take
- Apply the vendor-supplied patches for Jsish promptly.
- Monitor official sources for security advisories related to Jsish.
Long-Term Security Practices
- Regularly update Jsish to the latest version to mitigate known vulnerabilities.
- Employ secure coding practices to prevent similar heap-use-after-free issues.
Patching and Updates
Ensure timely application of security patches and updates for Jsish to address this vulnerability.