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socks/dpd: Add newer auth methods

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The IANA has allocated a few more authentication methods, minimally
extend the signature to catch those.
This commit is contained in:
Arne Welzel 2023-06-05 13:41:11 +02:00
parent d6ca1ec4f6
commit 8f7b4902c9
1 changed files with 18 additions and 2 deletions
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20
scripts/base/protocols/socks/dpd.sig
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@ -31,7 +31,7 @@ signature dpd_socks4_reverse_server {
signature dpd_socks5_client {
ip-proto == tcp
# Watch for a few authentication methods to reduce false positives.
payload /^\x05.[\x00\x01\x02]/
payload /^\x05.[\x00\x01\x02\x03\x05\x06\x07\x08\x09]/
tcp-state originator
}
@ -40,7 +40,23 @@ signature dpd_socks5_server {
requires-reverse-signature dpd_socks5_client
# Watch for a single authentication method to be chosen by the server or
# the server to indicate the no authentication is required.
payload /^\x05[\x00\x01\x02\xff]/
# From wikipedia:
# 0x00: No authentication
# 0x01: GSSAPI (RFC 1961)
# 0x02: Username/password (RFC 1929)
# 0x03–0x7F: methods assigned by IANA[11]
# 0x03: Challenge-Handshake Authentication Protocol
# 0x04: Unassigned
# 0x05: Challenge-Response Authentication Method
# 0x06: Secure Sockets Layer
# 0x07: NDS Authentication
# 0x08: Multi-Authentication Framework
# 0x09: JSON Parameter Block
# 0x0A–0x7F: Unassigned
# 0x80–0xFE: methods reserved for private use
#
# Keep in sync with dpd_socks5_client, 0xff is "no acceptable methods"
payload /^\x05[\x00\x01\x02\x03\x05\x06\x07\x08\x09\xff]/
tcp-state responder
enable "socks"
}