CVE-2022-38153
First published: Wed Aug 31 2022(Updated: )
An issue was discovered in wolfSSL before 5.5.0 (when --enable-session-ticket is used); however, only version 5.3.0 is exploitable. Man-in-the-middle attackers or a malicious server can crash TLS 1.2 clients during a handshake. If an attacker injects a large ticket (more than 256 bytes) into a NewSessionTicket message in a TLS 1.2 handshake, and the client has a non-empty session cache, the session cache frees a pointer that points to unallocated memory, causing the client to crash with a "free(): invalid pointer" message. NOTE: It is likely that this is also exploitable during TLS 1.3 handshakes between a client and a malicious server. With TLS 1.3, it is not possible to exploit this as a man-in-the-middle.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Wolfssl Wolfssl | =5.3.0 |
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Reference Links
- http://packetstormsecurity.com/files/170605/wolfSSL-5.3.0-Denial-Of-Service.html
- http://seclists.org/fulldisclosure/2023/Jan/8
- https://blog.trailofbits.com/2023/01/12/wolfssl-vulnerabilities-tlspuffin-fuzzing-ssh/
- https://github.com/trailofbits/tlspuffin
- https://github.com/wolfSSL/wolfssl/pull/5476
- https://github.com/wolfSSL/wolfssl/releases
- https://www.wolfssl.com/docs/security-vulnerabilities/
Frequently Asked Questions
What is the vulnerability ID of this issue in wolfSSL?
The vulnerability ID is CVE-2022-38153.
What is the severity rating of CVE-2022-38153?
The severity rating of CVE-2022-38153 is medium.
How does CVE-2022-38153 affect wolfSSL?
CVE-2022-38153 allows man-in-the-middle attackers or a malicious server to crash TLS 1.2 clients during a handshake in wolfSSL versions before 5.5.0 when '--enable-session-ticket' is used.
How can this vulnerability be exploited?
This vulnerability can be exploited by injecting a large ticket (more than 256 bytes) into a NewSessionTicket message during the TLS handshake.
Is there a fix available for CVE-2022-38153 in wolfSSL?
Yes, the fix for CVE-2022-38153 is included in wolfSSL version 5.5.0.
- collector/nvd-index
- vendor/wolfssl
- canonical/wolfssl wolfssl
- version/wolfssl wolfssl/5.3.0