CVE-2020-18378 : Security Advisory and Response
Learn about CVE-2020-18378, a vulnerability in Binaryen 1.38.26 that can lead to denial-of-service attacks. Find out how to mitigate and prevent this issue.
A NULL pointer dereference vulnerability in Binaryen 1.38.26 can lead to denial-of-service attacks.
Understanding CVE-2020-18378
What is CVE-2020-18378?
CVE-2020-18378 is a vulnerability found in SExpressionWasmBuilder::makeBlock in wasm/wasm-s-parser.c in Binaryen 1.38.26. An attacker can exploit this issue using a crafted wasm input to cause a segmentation fault, resulting in a denial-of-service condition.
The Impact of CVE-2020-18378
This vulnerability can be exploited by an attacker to crash the application, leading to a denial of service.
Technical Details of CVE-2020-18378
Vulnerability Description
A NULL pointer dereference was discovered in SExpressionWasmBuilder::makeBlock in wasm/wasm-s-parser.c in Binaryen 1.38.26. This can be triggered by a specially crafted wasm input.
Affected Systems and Versions
- Vendor: n/a
- Product: n/a
- Versions: 1.38.26
Exploitation Mechanism
The vulnerability can be exploited by an attacker using a specifically crafted wasm input to trigger a segmentation fault.
Mitigation and Prevention
Immediate Steps to Take
- Apply the latest security patches provided by the vendor.
- Monitor security advisories for updates on this vulnerability.
Long-Term Security Practices
- Regularly update software and dependencies to prevent known vulnerabilities.
- Implement proper input validation to mitigate similar issues.
Patching and Updates
Ensure that Binaryen is updated to a version that contains a fix for this vulnerability.