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bug#1558: marked as done (mutt-1.5.4i: OPT_MAX is not max, and mutt_expand_fmt off-by-one error)



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From: dnelson@xxxxxxxxxxxxxxx
Subject: mutt-1.5.4i: OPT_MAX is not max, and mutt_expand_fmt off-by-one error
To: submit@xxxxxxxxxxxx

Package: mutt
Version: 1.5.4i
Severity: normal

-- Please type your report below this line

In trying to hunt down the cause of an intermittent coredump when a new
message arrives in an empty folder, I built mutt with gcc-3.2.3
-fbounds-checking.  I've found two bugs so far, neither of which seem
to be causing my crash:

1) In mutt.h, OPT_MAX is no longer the last value in the enum list. 
   This means the QuadOptions array to be too small, which causes a
   bounds check when OPT_BOUNCE is used.

2) In muttlib.c, a pointer is incremented by 2 instead of one when
   skipping %s expandos in mutt_expand_fmt.  This means that expanding
   "%s%s" results in only the first s being expanded, and also causes a
   bounds check if the last two characters in fmt are "%s".

Fix: 

Index: mutt.h
===================================================================
RCS file: /home/roessler/cvs/mutt/mutt.h,v
retrieving revision 3.17
diff -u -p -r3.17 mutt.h
--- mutt.h      14 Apr 2003 09:09:53 -0000      3.17
+++ mutt.h      2 May 2003 20:12:21 -0000
@@ -288,8 +288,9 @@ enum
   OPT_SUBJECT,
   OPT_MIMEFWDREST,
   OPT_FORWEDIT,
-  OPT_MAX,
-  OPT_BOUNCE
+  OPT_BOUNCE,
+
+  OPT_MAX             /* must be last */
 };
 
 /* flags to ci_send_message() */
Index: muttlib.c
===================================================================
RCS file: /home/roessler/cvs/mutt/muttlib.c,v
retrieving revision 3.12
diff -u -p -r3.12 muttlib.c
--- muttlib.c   21 Jan 2003 12:33:41 -0000      3.12
+++ muttlib.c   2 May 2003 20:12:22 -0000
@@ -806,7 +806,7 @@ void mutt_expand_fmt (char *dest, size_t
       dest += slen;
       destlen -= slen;
 
-      p += 2;
+      p++;
       last = p;
     }
     else if (p[1] == '%')



-- System Information
System Version: FreeBSD dan.emsphone.com 5.0-CURRENT FreeBSD 5.0-CURRENT #266: 
Tue Apr 15 18:05:08 CDT 2003     
dan@xxxxxxxxxxxxxxxx:/usr/src/sys/i386/compile/DANSMP  i386

-- Build environment information

(Note: This is the build environment installed on the system
muttbug is run on.  Information may or may not match the environment
used to build mutt.)

- gcc version information
cc -I/usr/local/include
Using built-in specs.
Configured with: FreeBSD/i386 system compiler
Thread model: posix
gcc version 3.2.2 [FreeBSD] 20030205 (release)

- CFLAGS
-Wall -O2 -pipe -march=pentium3 -g

-- Mutt Version Information

Mutt 1.5.4i (2003-03-19)
Copyright (C) 1996-2002 Michael R. Elkins and others.
Mutt comes with ABSOLUTELY NO WARRANTY; for details type `mutt -vv'.
Mutt is free software, and you are welcome to redistribute it
under certain conditions; type `mutt -vv' for details.

System: FreeBSD 5.0-CURRENT (i386) [using ncurses 5.2] [using libiconv 1.8]
Compile options:
-DOMAIN
-DEBUG
-HOMESPOOL  +USE_SETGID  +USE_DOTLOCK  +DL_STANDALONE  
-USE_FCNTL  +USE_FLOCK
+USE_POP  +USE_IMAP  +IMAP_EDIT_THREADS  -USE_GSS  -USE_SSL  -USE_SASL  
-USE_SASL2  
+HAVE_REGCOMP  -USE_GNU_REGEX  +COMPRESSED  
+HAVE_COLOR  +HAVE_START_COLOR  +HAVE_TYPEAHEAD  +HAVE_BKGDSET  
+HAVE_CURS_SET  +HAVE_META  +HAVE_RESIZETERM  
+CRYPT_BACKEND_CLASSIC_PGP  +CRYPT_BACKEND_CLASSIC_SMIME  -CRYPT_BACKEND_GPGME  
+BUFFY_SIZE -EXACT_ADDRESS  +SUN_ATTACHMENT  
+ENABLE_NLS  +LOCALES_HACK  +HAVE_WC_FUNCS  +HAVE_LANGINFO_CODESET  
+HAVE_LANGINFO_YESEXPR  
+HAVE_ICONV  -ICONV_NONTRANS  -HAVE_LIBIDN  +HAVE_GETSID  +HAVE_GETADDRINFO  
ISPELL="/usr/local/bin/ispell"
SENDMAIL="/usr/sbin/sendmail"
MAILPATH="/var/mail"
PKGDATADIR="/usr/local/share/mutt"
SYSCONFDIR="/usr/local/etc"
EXECSHELL="/bin/sh"
-MIXMASTER
To contact the developers, please mail to <mutt-dev@xxxxxxxx>.
To report a bug, please use the flea(1) utility.

Feature patch: pager_status_on_top 0.94.7 by Stefan `Sec` Zehl

---------------------------------------
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Date: Mon, 8 Sep 2003 02:25:50 +0200
From: Thomas Roessler <roessler@xxxxxxxxxxxxxxxxxx>
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Closing bugs referenced from within mutt's ChangeLog.