next/758/20250307/v1 #12730
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next/758/20250307/v1 #12730
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Ticket: 7552 When we use midstream, and the first packet we see of a flow is a response from server, and we want to match on some signature to client : - we had first set sgh_toserver/FLOW_SGH_TOSERVER as we first thought this was a packet to server - we then swap/reverse the flow, so sgh_toclient becomes sgh_toserver but it contains signatures to server and cannot match our to_client signature The detect engine with DetectRunSetup will set again the signatures group heads properly
Ticket: 7552 f->sgh_toserver may be NULL but because FLOW_SGH_TOSERVER is unset and thus, we want to delay cleanup until detection has really been run with the right signature group head. This may happen for a rule using `alert tcp any any -> any any` and a app-layer keyword to client with a app-layer supporting both udp and tcp with stream.midstream=true and with the first packet of a flow being a server response In this case, we swap the flow and reset its signature group heads
Codecov ReportAll modified and coverable lines are covered by tests ✅
Additional details and impacted files@@ Coverage Diff @@
## master #12730 +/- ##
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Coverage 80.76% 80.77%
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Files 936 936
Lines 259724 259730 +6
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+ Hits 209765 209795 +30
+ Misses 49959 49935 -24
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Information: QA ran without warnings. Pipeline 25010 |
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Staging:
SV_BRANCH=OISF/suricata-verify#2341