From: Philippe Antoine <contact@catenacyber.fr>
Date: Mon, 20 Sep 2021 18:45:10 +0000 (+0200)
Subject: fuzz: fixes a leak in applayerparse target
X-Git-Tag: suricata-7.0.0-beta1~1374
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ca054f726464fcc55242b7c851d75557c96b3d83;p=thirdparty%2Fsuricata.git

fuzz: fixes a leak in applayerparse target

If a protocol change was requested, the target did not handle
it as Suricata, as the target is meant to handle only one
app-layer protocol.
---

diff --git a/src/tests/fuzz/fuzz_applayerparserparse.c b/src/tests/fuzz/fuzz_applayerparserparse.c
index 3a10763abb..bc8efea806 100644
--- a/src/tests/fuzz/fuzz_applayerparserparse.c
+++ b/src/tests/fuzz/fuzz_applayerparserparse.c
@@ -148,6 +148,11 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
             memcpy(isolatedBuffer, albuffer, alnext - albuffer);
             (void) AppLayerParserParse(NULL, alp_tctx, f, f->alproto, flags, isolatedBuffer, alnext - albuffer);
             free(isolatedBuffer);
+            if (FlowChangeProto(f)) {
+                // exits if a protocol change is requested
+                alsize = 0;
+                break;
+            }
             flags &= ~(STREAM_START);
             if (f->alparser &&
                    (((flags & STREAM_TOSERVER) != 0 &&