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From Klaus Steinberger <Klaus.Steinber...@Physik.Uni-Muenchen.DE>
Subject suexec/2942: suexec did not work
Date Tue, 01 Sep 1998 23:20:09 GMT

>Number:         2942
>Category:       suexec
>Synopsis:       suexec did not work
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    apache
>State:          open
>Class:          sw-bug
>Submitter-Id:   apache
>Arrival-Date:   Tue Sep  1 16:30:00 PDT 1998
>Last-Modified:
>Originator:     Klaus.Steinberger@Physik.Uni-Muenchen.DE
>Organization:
apache
>Release:        1.3.1
>Environment:
Linux 2.0.33, egcs 1.0.3
>Description:
In my environment suexec did not work, even with no output into the logfile.
The server returned an internal error.

Further investigation showed up, that the static variable "log"
was not initialized. Accidentally in my case it was not NULL,
so the logfile was not opened, instead the error output was done
with an invalid FILE pointer, which led to an crash of the script.

>How-To-Repeat:

>Fix:
The following patch solves the problem

--- suexec.c.orig       Wed Sep  2 01:18:30 1998
+++ suexec.c    Wed Sep  2 01:05:15 1998
@@ -109,7 +109,7 @@
 #define AP_ENVBUF 256
 
 extern char **environ;
-static FILE *log;
+static FILE *log = NULL;
 
 char *safe_env_lst[] =
 {
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