CVE-2019-15759 : Exploit Details and Defense Strategies
Learn about CVE-2019-15759, a vulnerability in Binaryen 1.38.32 that can lead to denial-of-service attacks due to a NULL pointer dereference in the wasm::LocalSet::finalize function. Find out how to mitigate this issue.
Binaryen 1.38.32 contains a vulnerability that can lead to a denial-of-service attack due to a NULL pointer dereference in the wasm::LocalSet::finalize function.
Understanding CVE-2019-15759
A problem in Binaryen 1.38.32 can result in a NULL pointer dereference, potentially leading to a denial-of-service vulnerability.
What is CVE-2019-15759?
The vulnerability in Binaryen 1.38.32 allows for a crafted input to trigger segmentation faults, potentially causing denial-of-service attacks.
The Impact of CVE-2019-15759
The vulnerability can be exploited to cause segmentation faults, leading to denial-of-service conditions, as demonstrated by wasm2js.
Technical Details of CVE-2019-15759
Binaryen 1.38.32 vulnerability details.
Vulnerability Description
The issue lies in two visitors in ir/ExpressionManipulator.cpp that can result in a NULL pointer dereference in the wasm::LocalSet::finalize function in wasm/wasm.cpp.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Version: Not applicable
Exploitation Mechanism
- Crafted input can trigger segmentation faults
- Denial-of-service vulnerability demonstrated by wasm2js
Mitigation and Prevention
Steps to address CVE-2019-15759.
Immediate Steps to Take
- Apply patches or updates from the vendor
- Monitor for any unusual system behavior
Long-Term Security Practices
- Regularly update software and dependencies
- Conduct security assessments and code reviews
Patching and Updates
- Check for patches or fixes released by Binaryen
- Apply updates promptly to mitigate the vulnerability