VYPR
High severity7.5NVD Advisory· Published Sep 29, 2022· Updated Jun 17, 2026

CVE-2022-39173

CVE-2022-39173

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.

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Affected products

3
  • WolfSSL/Wolfssl3 versions
    cpe:2.3:a:wolfssl:wolfssl:*:*:*:*:*:*:*:*+ 2 more
    • cpe:2.3:a:wolfssl:wolfssl:*:*:*:*:*:*:*:*range: <5.5.1
    • (no CPE)
    • (no CPE)range: <5.5.1

Patches

Vulnerability mechanics

References

5

News mentions

0

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