#

# Backported to bash 4.1 from:

# http://lists.gnu.org/archive/html/bug-bash/2012-07/msg00027.html

# Also see:

# https://bugzilla.redhat.com/show_bug.cgi?id=840091

# http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-3410

#

--- lib/sh/eaccess.c	2008-08-12 08:50:01.000000000 -0700

+++ lib/sh/eaccess.c	2012-07-24 09:39:37.970186946 -0700

@@ -40,6 +40,10 @@

 #if !defined (_POSIX_VERSION) && defined (HAVE_SYS_FILE_H)

 #  include <sys/file.h>

 #endif /* !_POSIX_VERSION */

+

+#include <string.h> /* memset(3C) */

+#include <limits.h> /* _XOPEN_PATH_MAX */

+

 #include "posixstat.h"

 #include "filecntl.h"

@@ -82,6 +86,8 @@

      const char *path;

      struct stat *finfo;

 {

+  static char pbuf[_XOPEN_PATH_MAX + 1];

+

   if (*path == '\0')

     {

       errno = ENOENT;

@@ -106,9 +112,10 @@

      trailing slash.  Make sure /dev/fd/xx really uses DEV_FD_PREFIX/xx.

      On most systems, with the notable exception of linux, this is

      effectively a no-op. */

-      char pbuf[32];

+      (void) memset (pbuf, '\0', sizeof(pbuf));

       strcpy (pbuf, DEV_FD_PREFIX);

-      strcat (pbuf, path + 8);

+      strncat (pbuf, path + 8,

+	      (size_t) (sizeof(pbuf) - sizeof(DEV_FD_PREFIX)));

       return (stat (pbuf, finfo));

 #endif /* !HAVE_DEV_FD */

     }