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Bug #146

closed

isdataat + relative does not work when previous keyword is byte_jump

Added by Will Metcalf over 14 years ago. Updated over 14 years ago.

Status:
Closed
Priority:
Normal
Assignee:
Gurvinder Singh
Target version:
1.0.0
Affected Versions:
Effort:
Difficulty:
Label:

Description

isdataat + relative does not work when previous keyword is byte_jump. This is supported by snort we should do the same.

[3499] 4/5/2010 -- 19:41:06 - (detect-isdataat.c:253) <Error> (DetectIsdataatSetup) -- [ERRCODE: SC_ERR_INVALID_SIGNATURE(36)] - Unknown previous keyword!
[3499] 4/5/2010 -- 19:41:06 - (detect.c:295) <Error> (DetectLoadSigFile) -- [ERRCODE: SC_ERR_INVALID_SIGNATURE(36)] - Error parsing signature "alert tcp any any -> any any (msg:"byte_jump match = 0 with distance content HTTP/1. relative against HTTP/1.0"; byte_jump:1,46,string,dec; isdataat:87,relative; classtype:bad-unknown; sid:109; rev:1;)" from file /home/coz/allworkplain.rules at line 225

snort output.
01/04-12:29:26.927934 [**] [1:109:1] byte_jump match = 0 with distance content HTTP/1. relative against HTTP/1.0 [**] [Classification: Potentially Bad Traffic] [Priority: 2] {TCP} 192.168.2.3:39867 -> 209.85.225.105:80

Files

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allworkandnoplayplain.pcap (2.7 KB) allworkandnoplayplain.pcap allworkandnoplay Will Metcalf, 05/04/2010 08:54 PM
0003-fixed-setting-up-byte_test-relative-when-byte_jump-i.patch (3.8 KB) 0003-fixed-setting-up-byte_test-relative-when-byte_jump-i.patch Gurvinder Singh, 05/14/2010 11:09 PM
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