CVE-2022-39173

HIGH

Wolfssl < 5.5.1 - Out-of-Bounds Write

Title source: rule

Description

In wolfSSL before 5.5.1, malicious clients can cause a buffer overflow during a TLS 1.3 handshake. This occurs when an attacker supposedly resumes a previous TLS session. During the resumption Client Hello a Hello Retry Request must be triggered. Both Client Hellos are required to contain a list of duplicate cipher suites to trigger the buffer overflow. In total, two Client Hellos have to be sent: one in the resumed session, and a second one as a response to a Hello Retry Request message.

Scores

CVSS v3 7.5
EPSS 0.0137
EPSS Percentile 80.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-787
Status published
Products (1)
wolfssl/wolfssl < 5.5.1
Published Sep 29, 2022
Tracked Since Feb 18, 2026