CVEvulnerability

CVE-2020-24613

6.8 MEDIUM Published 2020-08-24 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2020-08-24
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
6.8 MEDIUM — CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
CVSS 2.0 ([email protected])
4.9 MEDIUM — AV:N/AC:M/Au:S/C:P/I:P/A:N
Weaknesses
CWE-295

Description

wolfSSL before 4.5.0 mishandles TLS 1.3 server data in the WAIT_CERT_CR state, within SanityCheckTls13MsgReceived() in tls13.c. This is an incorrect implementation of the TLS 1.3 client state machine. This allows attackers in a privileged network position to completely impersonate any TLS 1.3 servers, and read or modify potentially sensitive information between clients using the wolfSSL library and these TLS servers.

Affected configurations

• wolfssl wolfssl (< 4.5.0)

Related

Weakness · CWE (1)

  • CWE-295 Improper Certificate Validation weakness

References