CVE-2020-13649 : Exploit Details and Defense Strategies
Learn about CVE-2020-13649 affecting JerryScript 2.2.0, leading to NULL pointer dereference and assertion failure. Find mitigation steps and update recommendations here.
JerryScript 2.2.0 mishandles errors during certain out-of-memory conditions, leading to a NULL pointer dereference and assertion failure.
Understanding CVE-2020-13649
What is CVE-2020-13649?
JerryScript 2.2.0's parser/js/js-scanner.c encounters issues during specific out-of-memory scenarios, resulting in critical errors.
The Impact of CVE-2020-13649
The vulnerability can be exploited to cause a NULL pointer dereference and assertion failure, potentially leading to a denial of service (DoS) condition.
Technical Details of CVE-2020-13649
Vulnerability Description
The vulnerability in JerryScript 2.2.0 occurs in parser/js/js-scanner.c, where errors during out-of-memory conditions are mishandled, causing a NULL pointer dereference and assertion failure.
Affected Systems and Versions
- Affected Version: JerryScript 2.2.0
Exploitation Mechanism
The vulnerability can be exploited by triggering specific out-of-memory conditions, leading to the mentioned NULL pointer dereference and assertion failure.
Mitigation and Prevention
Immediate Steps to Take
- Update to a patched version of JerryScript to mitigate the vulnerability.
- Monitor for any unusual behavior that could indicate exploitation of the vulnerability.
Long-Term Security Practices
- Regularly update software and libraries to ensure the latest security patches are applied.
- Implement proper error handling mechanisms to prevent similar vulnerabilities in the future.
Patching and Updates
Apply the patch provided by JerryScript to address the mishandling of errors during out-of-memory conditions.