CVE-2022-38152 Null dereference in n/a
A segmentation fault in wolfSSL servers causes denial of service when using the non-default SSL_clear function during TLS session resumption.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2022-38152?
CVE-2022-38152 is a high-severity vulnerability in Wolfssl Wolfssl, published on 31 Aug 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-754
Which versions are affected by CVE-2022-38152?
It affects 1 product.
Products include Wolfssl Wolfssl.
How do I fix CVE-2022-38152?
Upgrade to a fixed version.
Is CVE-2022-38152 being exploited?
There is no known exploitation of CVE-2022-38152 in the wild and no public exploit code.
Other vulnerabilities in Wolfssl Wolfssl
Sources
Also known as DEBIAN-CVE-2022-38152, GHSA-g986-42m5-mxwm, JLSEC-2026-672, UBUNTU-CVE-2022-38152.