Vulnerability Monitor

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CVE-2022-38152

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.

Security Impact Summary

This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 7.5, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts and availability (service disruption) for affected systems. Impacting 1 product from wolfssl organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2022, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.

Published

2022-08-31T17:15:08.297

Last Modified

2024-11-21T07:15:54.057

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.5 (HIGH)

Weaknesses

Type: Primary
CWE-754

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	wolfssl	wolfssl	< 5.5.0	Yes

References

http://packetstormsecurity.com/files/170604/wolfSSL-Session-Resumption-Denial-Of-Service.html Exploit, Third Party Advisory ([email protected])
http://seclists.org/fulldisclosure/2023/Jan/7 Exploit, Mailing List, Third Party Advisory ([email protected])
https://blog.trailofbits.com/2023/01/12/wolfssl-vulnerabilities-tlspuffin-fuzzing-ssh/ Third Party Advisory ([email protected])
https://github.com/tlspuffin/tlspuffin Not Applicable ([email protected])
https://github.com/wolfSSL/wolfssl/pull/5468 Exploit, Patch, Third Party Advisory ([email protected])
https://github.com/wolfSSL/wolfssl/releases Release Notes ([email protected])
https://www.wolfssl.com/docs/security-vulnerabilities/ Vendor Advisory ([email protected])
http://packetstormsecurity.com/files/170604/wolfSSL-Session-Resumption-Denial-Of-Service.html Exploit, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://seclists.org/fulldisclosure/2023/Jan/7 Exploit, Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://blog.trailofbits.com/2023/01/12/wolfssl-vulnerabilities-tlspuffin-fuzzing-ssh/ Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/tlspuffin/tlspuffin Not Applicable (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/wolfSSL/wolfssl/pull/5468 Exploit, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/wolfSSL/wolfssl/releases Release Notes (af854a3a-2127-422b-91ae-364da2661108)
https://www.wolfssl.com/docs/security-vulnerabilities/ Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For wolfssl's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.