CVE-2022-39173
HIGHwolfSSL < 5.5.1 - Buffer Overflow via TLS 1.3 Session Resumption
Title source: llmDescription
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 (5)
Core 5
Core References
Exploit, Third Party Advisory, VDB Entry
http://packetstormsecurity.com/files/169600/wolfSSL-Buffer-Overflow.html
Release Notes, Third Party Advisory
https://github.com/wolfSSL/wolfssl/releases
Vendor Advisory
https://www.wolfssl.com/docs/security-vulnerabilities/
Various Sources
https://blog.trailofbits.com/2023/01/12/wolfssl-vulnerabilities-tlspuffin-fuzzing-ssh/
Mailing List, Third Party Advisory mailing-list
http://seclists.org/fulldisclosure/2022/Oct/24
Scores
CVSS v3
7.5
EPSS
0.0426
EPSS Percentile
89.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
partial
Details
CWE
CWE-787
Status
published
Products (1)
wolfssl/wolfssl
< 5.5.1
Published
Sep 29, 2022
Tracked Since
Feb 18, 2026