PT-2021-22234 · Wasm3 · Wasm3

Published 2021-08-12 · Updated 2021-08-20 · CVE-2021-38592

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Wasm3 version 0.5.0

Description The issue is a heap-based buffer overflow in the op Const64 function, which is called from EvaluateExpression and m3 LoadModule.

Recommendations For Wasm3 version 0.5.0, consider disabling the op Const64 function as a temporary workaround until a patch is available. Restrict access to the EvaluateExpression and m3 LoadModule functions to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

CVE-2021-38592

Affected Products

Wasm3

References · 7

• https://nvd.nist.gov/vuln/detail/CVE-2021-38592 · Security Note
• https://osv.dev/vulnerability/CVE-2021-38592 · Vendor Advisory
• https://github.com/google/oss-fuzz-vulns/blob/main/vulns/wasm3/OSV-2021-676.yaml · Note
• https://t.me/cibsecurity/27208 · Telegram Post
• https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=33554 · Note
• https://t.me/cvenotify/19192 · Telegram Post
• https://t.me/cvenotify/19820 · Telegram Post