What is CVE-2019-7703?

CVE-2019-7703 is a medium-severity vulnerability in Webassembly Binaryen, classified under Use After Free. CVSS score: 6.5/10. Published 2019-02-10.

How severe is CVE-2019-7703?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Use After Free in Webassembly Binaryen

CVE-2019-7703

In Binaryen 1.38.22, there is a use-after-free problem in wasm::WasmBinaryBuilder::visitCall in wasm-binary.cpp. Remote attackers could leverage this vulnerability to cause a denial-of-service via a wasm file, as demonstrated by wasm-merge.

Vulnerability class: Use-After-Free

EPSS: 0.015 (70.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

Affected products

Webassembly Binaryen
N/a — versions n/a

Weakness classification (CWE)

CWE-416 — Use After Free

References

cve@mitre.org (Exploit, Patch, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2019-7703?: CVE-2019-7703 is a medium-severity vulnerability in Webassembly Binaryen, classified under Use After Free. CVSS score: 6.5/10. Published 2019-02-10.
How severe is CVE-2019-7703?: Medium severity. CVSS v3 base score is 6.5 out of 10.