RFC 7507
TLS Fallback Signaling Cipher Suite Value (SCSV) for Preventing Protocol Downgrade Attacks, April 2015
- File formats:
- Status:
- PROPOSED STANDARD
- Obsoleted by:
- RFC 8996
- Updates:
- RFC 2246, RFC 4346, RFC 4347, RFC 5246, RFC 6347
- Authors:
- B. Moeller
A. Langley - Stream:
- IETF
- Source:
- tls (sec)
Cite this RFC: TXT | XML | BibTeX
DOI: https://doi.org/10.17487/RFC7507
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Abstract
This document defines a Signaling Cipher Suite Value (SCSV) that prevents protocol downgrade attacks on the Transport Layer Security (TLS) and Datagram Transport Layer Security (DTLS) protocols. It updates RFCs 2246, 4346, 4347, 5246, and 6347. Server update considerations are included.
For the definition of Status, see RFC 2026.
For the definition of Stream, see RFC 8729.