diff -Nru mailutils-2.99.98/debian/changelog mailutils-2.99.98/debian/changelog
--- mailutils-2.99.98/debian/changelog	2013-07-03 09:10:03.000000000 +0000
+++ mailutils-2.99.98/debian/changelog	2013-11-22 19:10:13.000000000 +0000
@@ -1,3 +1,11 @@
+mailutils (1:2.99.98-1.1) unstable; urgency=low
+
+  * Non-maintainer upload.
+  * Add patch by Steve M. Robbins to fix a crash upon authentication.
+    (Closes: #720060)
+ 
+ -- Philipp Kern <pkern@debian.org>  Fri, 22 Nov 2013 20:09:51 +0100
+
 mailutils (1:2.99.98-1) unstable; urgency=low
 
   * New upstream release.
diff -Nru mailutils-2.99.98/debian/patches/fix-authentication.patch mailutils-2.99.98/debian/patches/fix-authentication.patch
--- mailutils-2.99.98/debian/patches/fix-authentication.patch	1970-01-01 00:00:00.000000000 +0000
+++ mailutils-2.99.98/debian/patches/fix-authentication.patch	2013-11-22 19:09:37.000000000 +0000
@@ -0,0 +1,37 @@
+Index: mailutils-2.99.97/libmailutils/auth/system.c
+===================================================================
+--- mailutils-2.99.97.orig/libmailutils/auth/system.c	2013-11-22 19:35:39.370348860 +0100
++++ mailutils-2.99.97/libmailutils/auth/system.c	2013-11-22 19:35:39.366348811 +0100
+@@ -104,9 +104,17 @@
+   if (!auth_data || !pass)
+     return EINVAL;
+   
+-  return auth_data->passwd
+-         && strcmp (auth_data->passwd, crypt (pass, auth_data->passwd)) == 0 ?
++  if (!auth_data->passwd)
++    return MU_ERR_AUTH_FAILURE;
++
++  {
++    char *crypt_pass = crypt (pass, auth_data->passwd);
++    if (!crypt_pass)
++      return MU_ERR_AUTH_FAILURE;
++
++    return strcmp (auth_data->passwd, crypt_pass) == 0 ?
+           0 : MU_ERR_AUTH_FAILURE;
++  }
+ }
+ 
+ /* Called only if generic fails */
+@@ -126,8 +134,11 @@
+       struct spwd *spw;
+       spw = getspnam (auth_data->name);
+       if (spw)
+-	return strcmp (spw->sp_pwdp, crypt (pass, spw->sp_pwdp)) == 0 ?
++	{
++	  char *crypt_pass = crypt (pass, spw->sp_pwdp);
++	  return crypt_pass && strcmp (spw->sp_pwdp, crypt_pass) == 0 ?
+ 	        0 : MU_ERR_AUTH_FAILURE;
++	}
+     }
+ #endif
+   return MU_ERR_AUTH_FAILURE;
diff -Nru mailutils-2.99.98/debian/patches/series mailutils-2.99.98/debian/patches/series
--- mailutils-2.99.98/debian/patches/series	2013-07-03 08:24:24.000000000 +0000
+++ mailutils-2.99.98/debian/patches/series	2013-11-22 19:09:45.000000000 +0000
@@ -2,3 +2,4 @@
 texinfo_fixes.patch
 tokyocabinet_dependencies.patch
 guile_bindir.patch
+fix-authentication.patch