What is CVE-2021-45293?

CVE-2021-45293 is a medium-severity vulnerability in Webassembly Binaryen, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 5.5/10. Published 2021-12-21.

How severe is CVE-2021-45293?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Buffer overflow in Webassembly Binaryen

CVE-2021-45293

A Denial of Service vulnerability exists in Binaryen 103 due to an Invalid memory address dereference in wasm::WasmBinaryBuilder::visitLet.

Vulnerability class: Buffer Overflow

EPSS: 0.008 (52.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

Affected products

Webassembly Binaryen — versions 103
Fedoraproject Fedora — versions 34, 35
N/a — versions n/a

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

References

cve@mitre.org (Exploit, Patch, Third Party Advisory, x_refsource_MISC, Issue Tracking)
cve@mitre.org (x_refsource_FEDORA, vendor-advisory)
cve@mitre.org (x_refsource_FEDORA, vendor-advisory)

Frequently asked questions

What is CVE-2021-45293?: CVE-2021-45293 is a medium-severity vulnerability in Webassembly Binaryen, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 5.5/10. Published 2021-12-21.
How severe is CVE-2021-45293?: Medium severity. CVSS v3 base score is 5.5 out of 10.