Out-of-bounds Write The advisory has been revoked - it doesn't affect any version of package wolfssl (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-DEBIAN14-WOLFSSL-11772937
- published10 Aug 2025
- disclosed29 Sept 2022
Introduced: 29 Sep 2022
CVE-2022-39173 (opens in a new tab)Amendment
The Debian security team deemed this advisory irrelevant for Debian:14.
NVD Description
Note: Versions mentioned in the description apply only to the upstream wolfssl package and not the wolfssl package as distributed by Debian.
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.
References
- https://security-tracker.debian.org/tracker/CVE-2022-39173
- http://packetstormsecurity.com/files/169600/wolfSSL-Buffer-Overflow.html
- http://seclists.org/fulldisclosure/2022/Oct/24
- https://blog.trailofbits.com/2023/01/12/wolfssl-vulnerabilities-tlspuffin-fuzzing-ssh/
- https://github.com/wolfSSL/wolfssl/releases
- https://www.wolfssl.com/docs/security-vulnerabilities/