Suricata

Bug #2437

Updated by Victor Julien about 6 years ago

Experiencing a panic with malformed DNS traffic. Here's the relevant trace data.    Looking at dns.rs, nothing really jumps out at me that seems like it'd cause a panic here. 

 I'll keep digging and see if I can come up with anything further. 

 <pre> 
 #10 0x000000000070d637 in core::panicking::panic () at /checkout/src/libcore/panicking.rs:51 
 No locals. 
 #11 0x00000000006028ff in suricata::dns::dns::{{impl}}::set_event (self=0x7fb97edc9ec0, event=MalformedData) at src/dns/dns.rs:358 
         tx = 0x7fb97c9ada98 
         len = 2 
         self = 0x7fb97edc9ec0 
         event = MalformedData 
 #12 0x000000000060383b in suricata::dns::dns::{{impl}}::parse_response (self=0x7fb97edc9ec0, input=...) at src/dns/dns.rs:421 
         response = {header = {tx_id = 55792, flags = 31898, questions = 32697, answer_rr = 0, authority_rr = 56128, additional_rr = 31898}, queries = {buf = {ptr = {pointer = {__0 = 0x2}, _marker = {<No data fields>}}, cap = 140434636200768, a = {<No data fields>}},  
             len = 140434810584624}, answers = {buf = {ptr = {pointer = {__0 = 0x6010bd <core::slice::{{impl}}::iter_mut<suricata::dns::dns::DNSTransaction>+269>}, _marker = {<No data fields>}}, cap = 140434810584736, a = {<No data fields>}}, len = 6630918}, authorities = { 
             buf = {ptr = {pointer = {__0 = 0x2}, _marker = {<No data fields>}}, cap = 140434636200432, a = {<No data fields>}}, len = 140434636200432}} 
         self = 0x7fb97edc9ec0 
         input = {data_ptr = 0x7fb9fc0217b6 "\230A\250\a", length = 512} 
 #13 0x000000000060496c in suricata::dns::dns::rs_dns_parse_response (_flow=0x7fb76d3ecfe0, state=0x7fb97edc9ec0, _pstate=0x7fb97da33990, input=0x7fb9fc0217b6 "\230A\250\a", input_len=512, _data=0x0) at src/dns/dns.rs:613 
         buf = {data_ptr = 0x7fb9fc0217b6 "\230A\250\a", length = 512} 
         _flow = 0x7fb76d3ecfe0 
         state = 0x7fb97edc9ec0 
         _data = 0x0 
         _pstate = 0x7fb97da33990 
         input = 0x7fb9fc0217b6 "\230A\250\a" 
         input_len = 512 
 </pre>

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