ccsinjection.lepidum.co.jp

OpenSSL #ccsinjection Vulnerability

Last update: Mon, 16 Jun 2014 18:21:23 0900. OpenSSL’s ChangeCipherSpec processing has a serious vulnerability. This vulnerability allows malicious intermediate nodes to intercept encrypted data and decrypt them while forcing SSL clients to use weak keys which are exposed to the malicious nodes. Because both of servers and clients are affected by this vulnerabitlity, every OpenSSL user should update their software immediately. This vulnerabitlity has enough reproducibility and it is very like...OpenSSL 0...

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OpenSSL #ccsinjection Vulnerability | ccsinjection.lepidum.co.jp Reviews

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Last update: Mon, 16 Jun 2014 18:21:23 0900. OpenSSL’s ChangeCipherSpec processing has a serious vulnerability. This vulnerability allows malicious intermediate nodes to intercept encrypted data and decrypt them while forcing SSL clients to use weak keys which are exposed to the malicious nodes. Because both of servers and clients are affected by this vulnerabitlity, every OpenSSL user should update their software immediately. This vulnerabitlity has enough reproducibility and it is very like...OpenSSL 0...

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OpenSSL #ccsinjection Vulnerability | ccsinjection.lepidum.co.jp Reviews

https://ccsinjection.lepidum.co.jp

Last update: Mon, 16 Jun 2014 18:21:23 0900. OpenSSL’s ChangeCipherSpec processing has a serious vulnerability. This vulnerability allows malicious intermediate nodes to intercept encrypted data and decrypt them while forcing SSL clients to use weak keys which are exposed to the malicious nodes. Because both of servers and clients are affected by this vulnerabitlity, every OpenSSL user should update their software immediately. This vulnerabitlity has enough reproducibility and it is very like...OpenSSL 0...

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ccsinjection.lepidum.co.jp

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OpenSSL #ccsinjection Vulnerability

http://ccsinjection.lepidum.co.jp/ja.html

最終更新日: Mon, 16 Jun 2014 18:21:23 0900. Windows, Mac, iPhoneの標準アプリではOpenSSLを使っていないので、今回の脆弱性に由来する危険はありません。クライアントとサーバがともにバグが存在するバージョンで、サーバがバージョン1.0.1以降の場合に、通信の盗聴改竄を行う攻撃が行われる恐れがあります。 SSL30, TLS1.0, TLS1.1, TLS1.2 のすべてが影響をうけます。ネットワーク技術セキュリティー技術デジタルアイデンティティー技術を中心とした研究開発受託開発コンサルティングを行っている民間企業です。 CCS Injection 脆弱性の発見経緯レピダムの技術者ブログ. JVN (Japan Vulnerability Notes). Early ChangeCipherSpec Attack (ImperialViolet). OpenSSL の Man-in-the-middle 攻撃可能な脆弱性の影響 (Security Diary). 更新内容: (Fri, 13 Jun 2014 20:00:00 0900).

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How I discovered CCS Injection Vulnerability (CVE-2014-0224) - OpenSSL #ccsinjection Vulnerability

http://ccsinjection.lepidum.co.jp/blog/2014-06-05/CCS-Injection-en/index.html

How I discovered CCS Injection Vulnerability (CVE-2014-0224). Hello My name is Masashi Kikuchi. Here is my story how I find the CCS Injection Vulnerability. ( CVE-2014-0224. What is the bug? The problem is that OpenSSL accepts ChangeCipherSpec (CCS) inappropriately during a handshake. This bug has existed since the very first release of OpenSSL. How difficult is it to find the bug? Fuzzing may have worked. However, as the history (see below) shows, knowledge of TLS/SSL implementation seems vital. Fix nul...

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CCS Injection脆弱性(CVE-2014-0224)発見の経緯についての紹介 - OpenSSL #ccsinjection Vulnerability

http://ccsinjection.lepidum.co.jp/blog/2014-06-05/CCS-Injection/index.html

通常のハンドシェークでは、右の図のような順序でメッセージを交換します( RFC5246 The Transport Layer Security (TLS) Protocol Version 1.2 7.3. Fix null-pointer assignment in do change cipher spec() revealed. DTLS: SegFault if ChangeCipherSpec is received before ClientHello. DTLS fragment retransmission bug. DTLS fragment retransmission bug. Note: To help avoid pipeline stalls, ChangeCipherSpec is an independent SSL Protocol content type, and is not actually an SSL handshake message. バグを報告してから公開されるまでのタイムラインは Mark J Coxのブログ.

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Girl Geek Coffees UK. Science. Technology. Maths. Engineering. Gaming. Programming. Hacking. Caffeine. 6 June – The week in Tech. June 6, 2014. Queen’s Speech could lead to tougher cybercrime laws. In Wednesday’s Queen’s speech, an update. To the Computer Misuse Act 1990 (CMA) was proposed as part of the Serious Crime Bill, with much longer sentences outlined for UK hackers. To read our full article. The Guardian launches SecureDrop. The platform is accessed through the TOR network, and contributors are ...

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Effetti Collaterali: Ancora OpenSSL

http://codabar.blogspot.com/2014/06/ancora-openssl.html

Il Web 2.0 e i suoi effetti sulla vita (professionale) degli utenti di internet. Sabato 7 giugno 2014. Nel giro di un paio di mesi sono state individuate importanti vulnerabilità su OpenSSL:. Ad aprile Heartbleed ha aperto le danze, svelando in modo piuttosto brusco i problemi dovuti all'esclusiva forma di volontarietà con cui sono gestiti alcuni dei pacchetti, senza dubbio definibili pilastri di internet e del suo utilizzo in modo sicuro. Descrizione della CCS Injection Vulnerability. Negli esiti sono s...

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OpenSSL #ccsinjection Vulnerability

Last update: Mon, 16 Jun 2014 18:21:23 0900. OpenSSL’s ChangeCipherSpec processing has a serious vulnerability. This vulnerability allows malicious intermediate nodes to intercept encrypted data and decrypt them while forcing SSL clients to use weak keys which are exposed to the malicious nodes. Because both of servers and clients are affected by this vulnerabitlity, every OpenSSL user should update their software immediately. This vulnerabitlity has enough reproducibility and it is very like...OpenSSL 0...

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