Weak TLS_DHE_RSA_WITH_ARIA_256_GCM_SHA384

IANA name:

TLS_DHE_RSA_WITH_ARIA_256_GCM_SHA384

Hex code:

0xC0, 0x53

TLS Version(s):

TLS1.2, TLS1.3

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Protocol:

Transport Layer Security (TLS)

Key Exchange:

PFS Diffie-Hellman Ephemeral (DHE)

DHEat Attack:

The so-called DHEat Attack affects cryptographic protocols using the Diffie Hellman key exchange (incl. TLS). According to its authors, it exploits a protocol particularity that may allow attackers to perform a DoS attack "with a low-bandwidth network connection without authentication, privilege, or user interaction."

Raccoon Attack:

The so-called Raccoon Attack affects the specifications of TLS 1.2 and below when using a DH(E) key exchange. According to the researchers, while very hard to exploit, in rare circumstances this timing attack allows attackers to decrypt the connection between users and the server. A fix has been introduced in the TLS 1.3 specification.

Authentication:

Rivest Shamir Adleman algorithm (RSA)

RSA Authentication:

There are reports that servers using the RSA authentication algorithm with keys longer than 3072-bit may experience heavy performance issues leading to connection timeouts and even service unavailability if many clients open simultaneous connections.

Encryption:

AEAD ARIA with 256bit key in Galois/Counter mode (ARIA 256 GCM)

Hash:

Secure Hash Algorithm 384 (SHA384)

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Included in RFC:

• RFC 6209

Machine-readable:

application/json