{"id":"CVE-2022-35409","details":"An issue was discovered in Mbed TLS before 2.28.1 and 3.x before 3.2.0. In some configurations, an unauthenticated attacker can send an invalid ClientHello message to a DTLS server that causes a heap-based buffer over-read of up to 255 bytes. This can cause a server crash or possibly information disclosure based on error responses. Affected configurations have MBEDTLS_SSL_DTLS_CLIENT_PORT_REUSE enabled and MBEDTLS_SSL_IN_CONTENT_LEN less than a threshold that depends on the configuration: 258 bytes if using mbedtls_ssl_cookie_check, and possibly up to 571 bytes with a custom cookie check function.","modified":"2026-04-16T00:05:07.399234060Z","published":"2022-07-15T14:15:09.840Z","related":["openSUSE-SU-2022:10247-1","openSUSE-SU-2024:12478-1"],"database_specific":{"unresolved_ranges":[{"extracted_events":[{"last_affected":"10.0"}],"cpe":"cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*","source":"CPE_FIELD"}]},"references":[{"type":"ADVISORY","url":"https://github.com/Mbed-TLS/mbedtls/releases"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2022/12/msg00036.html"},{"type":"EVIDENCE","url":"https://mbed-tls.readthedocs.io/en/latest/security-advisories/advisories/mbedtls-security-advisory-2022-07.html"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/Mbed-TLS/mbedtls","events":[{"introduced":"0"},{"fixed":"dd79db10014d85b26d11fe57218431f2e5ede6f2"},{"introduced":"8df2f8e7b9c7bb9390ac74bb7bace27edca81a2b"},{"fixed":"3aef7670b78ddebf80f4ad38b9a0059d40021832"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"2.28.1"},{"introduced":"3.0.0"},{"fixed":"3.2.0"}],"cpe":"cpe:2.3:a:arm:mbed_tls:*:*:*:*:*:*:*:*","source":"CPE_FIELD"}}],"versions":["beta-oob-2","mbedos-release-15-11","mbedos-techcon-oob2","mbedtls-2.0.0","mbedtls-2.1.0","mbedtls-2.1.1","mbedtls-2.1.2","mbedtls-2.10.0","mbedtls-2.11.0","mbedtls-2.12.0","mbedtls-2.13.0","mbedtls-2.13.1","mbedtls-2.14.0","mbedtls-2.16.0","mbedtls-2.19.0","mbedtls-2.19.0d1","mbedtls-2.19.0d2","mbedtls-2.19.1","mbedtls-2.2.0","mbedtls-2.2.1","mbedtls-2.20.0","mbedtls-2.20.0d0","mbedtls-2.21.0","mbedtls-2.22.0d0","mbedtls-2.24.0","mbedtls-2.26.0","mbedtls-2.3.0","mbedtls-2.4.0","mbedtls-2.5.0","mbedtls-2.5.1","mbedtls-2.6.0","mbedtls-2.6.0-rc1","mbedtls-2.7.0","mbedtls-2.7.0-rc1","mbedtls-2.8.0","mbedtls-2.8.0-rc1","mbedtls-2.9.0","polarssl-1.2.0","polarssl-1.2.1","polarssl-1.2.2","polarssl-1.2.4","polarssl-1.2.5","polarssl-1.2.6","polarssl-1.3.0","polarssl-1.3.0-rc0","polarssl-1.3.1","polarssl-1.3.2","polarssl-1.3.3","polarssl-1.3.4","polarssl-1.3.5","polarssl-1.3.6","polarssl-1.3.7","polarssl-1.3.8","polarssl-1.3.9","v2.24.0","v2.26.0","yotta-2.3.1"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-35409.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H"}]}