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Affected Component
Analysis
wolfssl
Exploitable
Name
CVE-2022-38152
Description
An issue was discovered in wolfSSL before 5.5.0. When a TLS 1.3 client connects to a wolfSSL server and SSL_clear is called on its session, the server crashes with a segmentation fault. This occurs in the second session, which is created through TLS session resumption and reuses the initial struct WOLFSSL. If the server reuses the previous session structure (struct WOLFSSL) by calling wolfSSL_clear(WOLFSSL* ssl) on it, the next received Client Hello (that resumes the previous session) crashes the server. Note that this bug is only triggered when resuming sessions using TLS session resumption. Only servers that use wolfSSL_clear instead of the recommended SSL_free; SSL_new sequence are affected. Furthermore, wolfSSL_clear is part of wolfSSL's compatibility layer and is not enabled by default. It is not part of wolfSSL's native API.
CWEs
Published Date
Updated Date
Workaround
-
Advisories
http://packetstormsecurity.com/files/170604/wolfSSL-Session-Resumption-Denial-Of-Service.htmlExploit
https://blog.trailofbits.com/2023/01/12/wolfssl-vulnerabilities-tlspuffin-fuzzing-ssh/Third Party Advisory
https://github.com/tlspuffin/tlspuffinNot Applicable
https://github.com/wolfSSL/wolfssl/releasesRelease Notes
https://www.wolfssl.com/docs/security-vulnerabilities/Vendor Advisory
http://packetstormsecurity.com/files/170604/wolfSSL-Session-Resumption-Denial-Of-Service.htmlExploit
https://blog.trailofbits.com/2023/01/12/wolfssl-vulnerabilities-tlspuffin-fuzzing-ssh/Third Party Advisory
https://github.com/tlspuffin/tlspuffinNot Applicable
https://github.com/wolfSSL/wolfssl/releasesRelease Notes
https://www.wolfssl.com/docs/security-vulnerabilities/Vendor Advisory
Analysis#
Vulnerability Rating#
7.5
CVSSv31