general/3959: Random corrupted date/time entries in access logfiles.

[Geoffrey Gallaway <ge...@domainit.com>]

>Number:         3959
>Category:       general
>Synopsis:       Random corrupted date/time entries in access logfiles.
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    apache
>State:          open
>Class:          sw-bug
>Submitter-Id:   apache
>Arrival-Date:   Wed Feb 24 06:20:01 PST 1999
>Last-Modified:
>Originator:     geoffeg@domainit.com
>Organization:
apache
>Release:        1.3.4
>Environment:
Apache version 1.3.4 on a pc architecture intel pentium II 400. 128 megs ram, 
10 gigs ultra scsi drives, linux 2.2.1 SMP, gcc 2.7.2.3 based on a 
slackware 3.6 installation.
>Description:
This server is our main web server, serving hundreds of virtual hosts all 
logging to one log file. The server may get thousands of hits a minute. A theroy 
could be that the the server is racing to keep writing to the common log file 
and getting confused once and a while. This does not cause the server to crash or
performance to degrade (as far as i can tell) but it does make running stats 
very difficult. The date and time fields are supposed to use a colon (":") as a 
seperator, but this may dissapear and turn the date into "1999822".

Example:

1cust153.tnt8.beaverton.or.da.uu.net - - [09/Feb/1999822:59:56 -0500] "GET /img1
4.gif HTTP/1.1" 200 985 "http://arizonahomes1.com/" "Mozilla/4.0 (compatible; MS
IE 4.01; Windows 98)"

>How-To-Repeat:
An example log file or example entries can be supplied.
>Fix:
No.
>Audit-Trail:
>Unformatted:
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