{"id":"CVE-2022-38153","details":"An issue was discovered in wolfSSL before 5.5.0 (when --enable-session-ticket is used); however, only version 5.3.0 is exploitable. Man-in-the-middle attackers or a malicious server can crash TLS 1.2 clients during a handshake. If an attacker injects a large ticket (more than 256 bytes) into a NewSessionTicket message in a TLS 1.2 handshake, and the client has a non-empty session cache, the session cache frees a pointer that points to unallocated memory, causing the client to crash with a \"free(): invalid pointer\" message. NOTE: It is likely that this is also exploitable during TLS 1.3 handshakes between a client and a malicious server. With TLS 1.3, it is not possible to exploit this as a man-in-the-middle.","modified":"2026-08-12T03:51:28.674408350Z","published":"2022-08-31T00:00:00Z","database_specific":{"cna_assigner":"mitre","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/38xxx/CVE-2022-38153.json"},"references":[{"type":"WEB","url":"http://packetstormsecurity.com/files/170605/wolfSSL-5.3.0-Denial-Of-Service.html"},{"type":"WEB","url":"https://www.wolfssl.com/docs/security-vulnerabilities/"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/38xxx/CVE-2022-38153.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-38153"},{"type":"FIX","url":"https://github.com/wolfSSL/wolfssl/pull/5476"},{"type":"PACKAGE","url":"https://github.com/trailofbits/tlspuffin"},{"type":"PACKAGE","url":"https://github.com/wolfSSL/wolfssl/releases"},{"type":"ARTICLE","url":"http://seclists.org/fulldisclosure/2023/Jan/8"},{"type":"ARTICLE","url":"https://blog.trailofbits.com/2023/01/12/wolfssl-vulnerabilities-tlspuffin-fuzzing-ssh/"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/wolfssl/wolfssl","events":[{"introduced":"e722c15be860794179082a05d09e6a90dc77ccf0"},{"fixed":"44f81f8bc082319cebf0e37df8470aa5748c1355"}],"database_specific":{"source":["DESCRIPTION","CPE_STRING"],"cpe":"cpe:2.3:a:wolfssl:wolfssl:5.3.0:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"fixed":"5.5.0"},{"introduced":"5.3.0"},{"last_affected":"5.3.0"}]}}],"versions":["5.3.0","v5.4.0-stable","v5.3.0-stable"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-38153.json"}}],"schema_version":"1.9.0"}