CVE-2020-18378: Null Pointer Dereference
First published: Tue Aug 22 2023(Updated: )
A NULL pointer dereference was discovered in SExpressionWasmBuilder::makeBlock in wasm/wasm-s-parser.c in Binaryen 1.38.26. A crafted wasm input can cause a segmentation fault, leading to denial-of-service, as demonstrated by wasm-as.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Webassembly Binaryen | =1.38.26 |
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Reference Links
Frequently Asked Questions
What is CVE-2020-18378?
CVE-2020-18378 is a vulnerability discovered in Binaryen 1.38.26 that allows for a NULL pointer dereference in SExpressionWasmBuilder::makeBlock in wasm/wasm-s-parser.c, leading to denial-of-service.
How severe is CVE-2020-18378?
CVE-2020-18378 has a severity score of 6.5 (medium).
What software is affected by CVE-2020-18378?
Webassembly Binaryen version 1.38.26 is affected by CVE-2020-18378.
How can CVE-2020-18378 be exploited?
A crafted wasm input can cause a segmentation fault, leading to denial-of-service.
Is there a fix available for CVE-2020-18378?
To fix CVE-2020-18378, it is recommended to update to a version of Binaryen that contains the fix.
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