Vulnerability Description
In wolfSSL before 5.5.1, malicious clients can cause a buffer overflow during a TLS 1.3 handshake. This occurs when an attacker supposedly resumes a previous TLS session. During the resumption Client Hello a Hello Retry Request must be triggered. Both Client Hellos are required to contain a list of duplicate cipher suites to trigger the buffer overflow. In total, two Client Hellos have to be sent: one in the resumed session, and a second one as a response to a Hello Retry Request message.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Wolfssl | Wolfssl | < 5.5.1 |
Related Weaknesses (CWE)
References
- http://packetstormsecurity.com/files/169600/wolfSSL-Buffer-Overflow.htmlExploitThird Party AdvisoryVDB Entry
- http://seclists.org/fulldisclosure/2022/Oct/24Mailing ListThird Party Advisory
- https://blog.trailofbits.com/2023/01/12/wolfssl-vulnerabilities-tlspuffin-fuzzin
- https://github.com/wolfSSL/wolfssl/releasesRelease NotesThird Party Advisory
- https://www.wolfssl.com/docs/security-vulnerabilities/Vendor Advisory
- http://packetstormsecurity.com/files/169600/wolfSSL-Buffer-Overflow.htmlExploitThird Party AdvisoryVDB Entry
- http://seclists.org/fulldisclosure/2022/Oct/24Mailing ListThird Party Advisory
- https://blog.trailofbits.com/2023/01/12/wolfssl-vulnerabilities-tlspuffin-fuzzin
- https://github.com/wolfSSL/wolfssl/releasesRelease NotesThird Party Advisory
- https://www.wolfssl.com/docs/security-vulnerabilities/Vendor Advisory
FAQ
What is CVE-2022-39173?
CVE-2022-39173 is a vulnerability with a CVSS score of 7.5 (HIGH). In wolfSSL before 5.5.1, malicious clients can cause a buffer overflow during a TLS 1.3 handshake. This occurs when an attacker supposedly resumes a previous TLS session. During the resumption Client ...
How severe is CVE-2022-39173?
CVE-2022-39173 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-39173?
Check the references section above for vendor advisories and patch information. Affected products include: Wolfssl Wolfssl.