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suricata/rules
History
Philippe Antoine 6cb6225b28 tcp: rejects FIN+SYN packets as invalid 
Ticket: #4569

If a FIN+SYN packet is sent, the destination may keep the
connection alive instead of starting to close it.
In this case, a later SYN packet will be ignored by the
destination.

Previously, Suricata considered this a session reuse, and thus
used the sequence number of the last SYN packet, instead of
using the one of the live connection, leading to evasion.

This commit errors on FIN+SYN so that they do not get
processed as regular FIN packets.
 		4 years ago
..
Makefile.am rules: add newer rule files to makefile for release tarball 5 years ago
app-layer-events.rules
…
decoder-events.rules ipv6: decoder event on invalid length 4 years ago
dhcp-events.rules
…
dnp3-events.rules
…
dns-events.rules
…
files.rules
…
http-events.rules http/range: reassemble files from different flows with range 4 years ago
http2-events.rules http2: follow range requests 4 years ago
ipsec-events.rules ike: set event for multiple server proposals 5 years ago
kerberos-events.rules
…
modbus-events.rules
…
mqtt-events.rules
…
nfs-events.rules
…
ntp-events.rules
…
smb-events.rules
…
smtp-events.rules
…
ssh-events.rules
…
stream-events.rules tcp: rejects FIN+SYN packets as invalid 4 years ago
tls-events.rules
…