CVE-2022-38152

 

Published at: - 31-08-2022 07:15

Last modified: - 20-01-2023 08:15

Total changes: - 3

Description

An issue was discovered in wolfSSL before 5.5.0. When a TLS 1.3 client connects to a wolfSSL server and SSL_clear is called on its session, the server crashes with a segmentation fault. This occurs in the second session, which is created through TLS session resumption and reuses the initial struct WOLFSSL. If the server reuses the previous session structure (struct WOLFSSL) by calling wolfSSL_clear(WOLFSSL* ssl) on it, the next received Client Hello (that resumes the previous session) crashes the server. Note that this bug is only triggered when resuming sessions using TLS session resumption. Only servers that use wolfSSL_clear instead of the recommended SSL_free; SSL_new sequence are affected. Furthermore, wolfSSL_clear is part of wolfSSL's compatibility layer and is not enabled by default. It is not part of wolfSSL's native API.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

 

Verification logic

 

Reference

• https://github.com/tlspuffin/tlspuffin
• https://www.wolfssl.com/docs/security-vulnerabilities/
• https://github.com/wolfSSL/wolfssl/releases
• https://github.com/wolfSSL/wolfssl/pull/5468
• 20230119 wolfSSL before 5.5.0: Denial-of-service with session resumption-
• http://packetstormsecurity.com/files/170604/wolfSSL-Session-Resumption-Denial-Of-Service.html

 

Keywords

NVD

 

CVE-2022-38152

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures