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Network Security Snort-Users
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Re: [Snort-users] snort 2.8.2.1 stops logging after 1 minute...

Subject: Re: [Snort-users] snort 2.8.2.1 stops logging after 1 minute...
Date: Mon, 21 Jul 2008 16:31:21 -0400
Attached is a patch to 2.8.2.1 that should address the issue.
If anyone has problems with it, please let us know.

Cheers.
-steve

Tim Maletic wrote:
Was glad to see this thread pop up.  I'm seeing similar behavior when I
attempt to move from 2.8.0 to 2.8.2.

Running on RHEL4, 2.8.0 is working fine.  I shutdown, copy the 2.8.2 snort
binary and libraries into place, restart, and then I get a handful of alerts
before the load climbs to 2.5 in a minute or two.  (Load under 2.8.0 is
typically under 1.)  Once it's in that state, no alerts fire (even while
generating test alert traffic), and the snort processes don't respond to
SIGUSR1 like normal.

So, same config, same rulesets, but 2.8.0 runs fine and 2.8.2 tanks.  (I
also tried disabling my local rules under 2.8.2, and that didn't help.)
-tm



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Index: src/detection-plugins/sp_pcre.c
--- src/detection-plugins/sp_pcre.c     30 Apr 2008 18:53:14 -0000
+++ src/detection-plugins/sp_pcre.c     18 Jul 2008 20:42:14 -0000
@@ -193,6 +193,12 @@
     {
         return 0; /* Don't search again */
     }
+
+    if (pcre->options & (SNORT_PCRE_URI | SNORT_PCRE_BODY))
+    {
+        return 0;
+    }
+
     pcre->options |= SNORT_PCRE_RELATIVE;
     pcre->search_offset += search_offset;
     return 1; /* Continue searcing */
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