From: Arkadiusz Miśkiewicz <arekm@maven.pl>
Date: Wed, 21 Jun 2017 07:05:38 +0000 (+0200)
Subject: - rel 5; prevent one small memleak that could be abused in some recent exploits
X-Git-Tag: auto/th/exim-4.89-5
X-Git-Url: http://git.pld-linux.org/?p=packages%2Fexim.git;a=commitdiff_plain;h=454f976

- rel 5; prevent one small memleak that could be abused in some recent exploits
---

diff --git a/exim-memleak.patch b/exim-memleak.patch
new file mode 100644
index 0000000..8fd83ec
--- /dev/null
+++ b/exim-memleak.patch
@@ -0,0 +1,43 @@
+commit 65e061b76867a9ea7aeeb535341b790b90ae6c21
+Author: Heiko Schlittermann (HS12-RIPE) <hs@schlittermann.de>
+Date:   Wed May 31 23:08:56 2017 +0200
+
+    Cleanup (prevent repeated use of -p/-oMr to avoid mem leak)
+
+diff --git a/src/src/exim.c b/src/src/exim.c
+index 67583e58..88e11977 100644
+--- a/src/src/exim.c
++++ b/src/src/exim.c
+@@ -3106,7 +3106,14 @@ for (i = 1; i < argc; i++)
+ 
+       /* -oMr: Received protocol */
+ 
+-      else if (Ustrcmp(argrest, "Mr") == 0) received_protocol = argv[++i];
++      else if (Ustrcmp(argrest, "Mr") == 0)
++
++        if (received_protocol)
++          {
++          fprintf(stderr, "received_protocol is set already\n");
++          exit(EXIT_FAILURE);
++          }
++        else received_protocol = argv[++i];
+ 
+       /* -oMs: Set sender host name */
+ 
+@@ -3202,7 +3209,15 @@ for (i = 1; i < argc; i++)
+ 
+     if (*argrest != 0)
+       {
+-      uschar *hn = Ustrchr(argrest, ':');
++      uschar *hn;
++
++      if (received_protocol)
++        {
++        fprintf(stderr, "received_protocol is set already\n");
++        exit(EXIT_FAILURE);
++        }
++
++      hn = Ustrchr(argrest, ':');
+       if (hn == NULL)
+         {
+         received_protocol = argrest;
diff --git a/exim.spec b/exim.spec
index b1a6b2e..4d771ef 100644
--- a/exim.spec
+++ b/exim.spec
@@ -24,7 +24,7 @@ Summary(pl.UTF-8):	Agent Transferu Poczty Uniwersytetu w Cambridge
 Summary(pt_BR.UTF-8):	Servidor de correio eletrônico exim
 Name:		exim
 Version:	4.89
-Release:	4
+Release:	5
 Epoch:		2
 License:	GPL
 Group:		Networking/Daemons/SMTP
@@ -58,7 +58,7 @@ Patch4:		%{name}4-Makefile-Default.patch
 # http://marc.merlins.org/linux/exim/files/sa-exim-cvs/localscan_dlopen_exim_4.20_or_better.patch
 Patch5:		localscan_dlopen_%{name}_4.20_or_better.patch
 Patch6:		exim-commandline_checks_require_admin.patch
-
+Patch7:		exim-memleak.patch
 Patch8:		%{name}-spam-timeout.patch
 
 Patch10:	%{name}-force-sigalrm.patch
@@ -185,7 +185,7 @@ Pliki nagłówkowe dla Exima.
 %patch4 -p1
 %patch5 -p1
 %patch6 -p2
-
+%patch7 -p2
 %patch8 -p1
 
 %patch10 -p1