PT-2020-15766 · Wolfssl · Wolfssl

Published 2020-08-24 · Updated 2020-09-02 · CVE-2020-24613

Positive Technologies (AI Summary)

CVSS v3.1

6.8

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions wolfSSL versions prior to 4.5.0

Description The issue is related to an incorrect implementation of the TLS 1.3 client state machine in the wolfSSL library. This allows attackers in a privileged network position to impersonate any TLS 1.3 servers, and read or modify potentially sensitive information between clients using the wolfSSL library and these TLS servers.

Recommendations For versions prior to 4.5.0, update to version 4.5.0 or later to resolve the issue. As a temporary workaround, consider restricting the use of TLS 1.3 until a patch is available.

Exploit

Fix

Improper Certificate Validation

Weakness Enumeration

CWE-295

Related Identifiers

CVE-2020-24613

Affected Products

Wolfssl

References · 9

• 🔥 https://research.nccgroup.com/2020/08/24/technical-advisory-wolfssl-tls-1-3-client-man-in-the-middle-attack · Exploit
• https://cve.org/CVERecord?id=CVE-2020-24613 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2020-24613 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-24613 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-24613 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-24613 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2020-24613 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2020-24613 · Vendor Advisory
• https://t.me/cybersecuritytechnologies/1679 · Telegram Post