dtls-fuzzer

dtls-fuzzer は、DTLSサーバのプロトコル状態ファジングを実行するJavaツールです。具体的には、以下の機能をサポートしています： 1. アルファベットを指定すると、ローカルのDTLSサーバ実装のモデルを自動的に生成できます。 2. テスト（入力のシーケンス）とアルファベットを指定すると、DTLSサーバ実装上でテストを実行できます。 3. 複数の学習実行を含むバッチ学習タスクを実行できます。 dtls-fuzzer は TLS-Attacker を使用して、DTLSメッセージの生成/解析と状態の維持を行います。 そのために、TLS-Attacker...

CVE-2021-42146

An issue was discovered in Contiki-NG tinyDTLS through master branch 53a0d97. DTLS servers allow remote attackers to reuse the same epoch number within two times the TCP maximum segment lifetime, which is prohibited in RFC6347. This vulnerability allows remote attackers to obtain sensitive...

Updated mbedtls packages fix security vulnerability

An unauthenticated remote host could send an invalid ClientHello message in which the declared length of the cookie extends past the end of the message. A DTLS server with MBEDTLSSSLDTLSCLIENTPORTREUSE enabled would read past the end of the message up to the declared length of the cookie. This...

MGASA-2022-0415 Updated mbedtls packages fix security vulnerability

An unauthenticated remote host could send an invalid ClientHello message in which the declared length of the cookie extends past the end of the message. A DTLS server with MBEDTLSSSLDTLSCLIENTPORTREUSE enabled would read past the end of the message up to the declared length of the cookie. This...

lib32-openssl: man-in-the-middle

During certificate verification, OpenSSL will attempt to find an alternative certificate chain if the first attempt to build such a chain fails. An error in the implementation of this logic can mean that an attacker could cause certain checks on untrusted certificates to be bypassed, such as the ...