Are there any known vulnerabilities associated with bidirectional channels in TLS and SSH

1. POODLE Attack: The Padding Oracle on Downgraded Legacy Encryption (POODLE) attack affects SSL v2, which is a predecessor to TLS. The POODLE attack can exploit the fact that SSL v2 uses the same encryption key for every piece of data sent during a session, allowing an attacker to decrypt the encrypted data. [4]

2. BEAST Attack: The Browser Exploit Against SSL/TLS (BEAST) attack can exploit the Cipher Block Chaining (CBC) encryption mode used in TLS 1.0 and TLS 1.1. This is a man-in-the-middle attack that can expose private data. [4]

3. CRIME Attack: The Compression Ratio Info-leak Made Easy (CRIME) attack can also be used against TLS 1.0. It is a side-channel attack that can expose private data by taking advantage of TLS 1.0's data compression. [4]

4. Lucky Thirteen Attack: The Lucky Thirteen attack, which makes use of timing flaws in the encryption algorithm, enables an attacker to decrypt secure connections in TLS 1.1. [4]

5. RC4 Attack: TLS 1.1 includes support for the RC4 cipher suite, which can be used by attackers to decrypt data. [4]

6. Renegotiation Attacks: Both SSL v2 and TLS 1.1 still permit renegotiation, which can result in denial-of-service attacks. [4]

The search results indicate that while bidirectional channels are a crucial component of TLS and SSH, there have been various vulnerabilities discovered in older versions of these protocols that can be exploited by attackers. The recommendation is to use the latest version of TLS (TLS 1.3) which addresses many of these vulnerabilities. [2,4]