CVE-2021-42142

The CVE-2021-42142 issue affects Contiki-NG tinyDTLS (master branch 53a0d97). The vulnerability arises from the DTLS server mishandling the early use of a large epoch number, enabling remote attackers to cause a denial of service and false-positive packet drops. Affected software is Contiki-NG ti...

CVE-2021-42147

The CVE-2021-42147 entry concerns a buffer over-read in Contiki-NG tinyDTLS (dtls_sha256_update) affecting master branch 53a0d97, enabling a remote attacker to cause a denial of service via crafted data packets. Connected sources corroborate the issue in Contiki-NG tinyDTLS and describe the vulne...

CVE-2021-42146

Contiki-NG tinyDTLS (master branch 53a0d97) contains a DTLS server issue where an attacker can reuse the same epoch number within two times the TCP maximum segment lifetime (RFC6347). This allows remote access to sensitive application data of connected clients. Affected component: DTLS server in ...

CVE-2021-42141

CVE-2021-42141 affects Contiki-NG tinyDTLS up to and including 2018-08-30. The issue is an incorrect handshake that may complete with different epoch numbers across Client_Hello, Client_key_exchange, and Change_cipher_spec, potentially causing denial of service. Public references indicate high-se...

CVE-2021-42145

CVE-2021-42145 affects Contiki-NG tinyDTLS in the master branch (commit 53a0d97). An assertion failure in check_certificate_request() can cause a denial of service. Documented impact is a high-severity network-root cause (CVSSv3.1: AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H, base score 7.5). Affected so...

CVE-2021-42143

CVE-2021-42143 affects Contiki-NG tinyDTLS (master branch 53a0d97). Affected: tinyDTLS handshake processing where an odd-length ClientHello cipher suites list can trigger an infinite loop, causing denial of service and a buffer over-read that may leak sensitive data. Impact: remote network attack...