CVE-2022-39173
High
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.
SeverityHigh
CVSS7.5
Exploit probability—
ProductWolfssl
PublishedSep 29, 2022
First seenSep 29, 2022
Weakness typeCWE-787Out-of-bounds write
How to fix
Update
- wolfssl wolfssl5.5.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| wolfssl wolfssl | v < 5.5.1 | 5.5.1 |
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