Date: Mon, 29 Apr 2002 14:49:29 -0700 From: Alfred Perlstein <bright@mu.org> To: Piotr Wiejaczka <wiejak@alpha.net.pl> Cc: freebsd-security@FreeBSD.ORG Subject: Re: syslogd security bug? Message-ID: <20020429214929.GK1530@elvis.mu.org> In-Reply-To: <20020429233943.A213@microsoft.com> References: <20020429233943.A213@microsoft.com>
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* Piotr Wiejaczka <wiejak@alpha.net.pl> [020429 14:44] wrote:
> Hi all.
>
> %uname -a
> FreeBSD localhost 4.5-STABLE FreeBSD 4.5-STABLE #1: Tue Mar 12 08:20:11 CET
> 2002 root@:/usr/src/sys/compile/OKO2 i386
>
> %cat syslog.c
> #include <syslog.h>
> #include <stdarg.h>
>
> int main(int argc, char *argv[])
> {
> syslog(LOG_EMERG, argv[1]);
> }
>
> %./syslog "blah %x %x %x %x"
>
> Message from syslogd@localhost at Mon Apr 29 23:27:35 2002 ...
> localhost syslog: blah 2807aebe 2 bfbffc5c bfbffd26
>
>
> Looks like we have a format string bug inside syslogd :)
You're kidding right?
Please read the syslog(3) manpage.
--
-Alfred Perlstein [alfred@freebsd.org]
'Instead of asking why a piece of software is using "1970s technology,"
start asking why software is ignoring 30 years of accumulated wisdom.'
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