fix(http): prevent addCNameIfAvailable from using closed Dialer (#…

…5665) added a check in `addCNameIfAvailable` to ensure the `Dialer` isnot NIL before attempting to fetch DNS data. this prevents potential panics (ex. SIGSEGV) when the `Dialer` is closed due to an interruption. Signed-off-by: Dwi Siswanto <[email protected]>
projectdiscovery · Sep 25, 2024 · c9f6789 · c9f6789
1 parent c93a2b1
commit c9f6789
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/pkg/protocols/http/request.go b/pkg/protocols/http/request.go
@@ -1042,6 +1042,10 @@ func (request *Request) validateNFixEvent(input *contextargs.Context, gr *genera
 
 // addCNameIfAvailable adds the cname to the event if available
 func (request *Request) addCNameIfAvailable(hostname string, outputEvent map[string]interface{}) {
+	if protocolstate.Dialer == nil {
+		return
+	}
+
 	data, err := protocolstate.Dialer.GetDNSData(hostname)
 	if err == nil {
 		switch len(data.CNAME) {