PT-2022-12209 · Wolfssl+1 · Wolfssl+1

Chris M. Stone + 5 · CVE-2021-44718 · Published 2021-12-28 · Updated 2023-01-12

Positive Technologies (AI Summary)

CVSS v3.1

5.9

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions wolfSSL versions through 5.0.0

Description The issue allows an attacker to cause a denial of service and infinite loop in the client component by sending crafted traffic from a Machine-in-the-Middle (MITM) position. The root cause is that the client module accepts TLS messages that normally are only sent to TLS servers.

Recommendations For wolfSSL versions through 5.0.0, update to a version later than 5.0.0 to resolve the issue. As a temporary workaround, consider restricting the acceptance of TLS messages in the client module to prevent infinite loops.

Fix

DoS

Infinite Loop

Weakness Enumeration

CWE-835

Related Identifiers

ALT-PU-2021-3641

ALT-PU-2023-1034

CVE-2021-44718

Affected Products

Alt Linux

Wolfssl

References · 13

• https://osv.dev/vulnerability/CVE-2021-44718 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-44718 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2021-44718 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-44718 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-44718 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2021-44718 · Security Note
• https://wolfssl.com/docs/security-vulnerabilities · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-44718 · Security Note
• https://github.com/wolfSSL/wolfssl/releases · Note
• https://github.com/wolfSSL/wolfssl/pull/4629 · Note
• https://t.me/cvenotify/35631 · Telegram Post
• https://t.me/cvenotify/35630 · Telegram Post
• https://t.me/cibsecurity/49237 · Telegram Post