package/exim/0007-Fix-CVE-2019-10149.patch

From d740d2111f189760593a303124ff6b9b1f83453d Mon Sep 17 00:00:00 2001
From: Jeremy Harris <jgh146exb@wizmail.org>
Date: Mon, 27 May 2019 21:57:31 +0100
Subject: [PATCH] Fix CVE-2019-10149

[Peter: drop documentation update, fix path]
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
---
 src/deliver.c          | 22 ++++++++++++++--------
 1 files changed, 52 insertions(+), 8 deletions(-)
 create mode 100644 doc/doc-txt/cve-2019-10149

diff --git a/src/deliver.c b/src/deliver.c
index 59256ac2..45cc0723 100644
--- a/src/deliver.c
+++ b/src/deliver.c
@@ -6227,17 +6227,23 @@ if (process_recipients != RECIP_IGNORE)
 	{
 	uschar * save_local =  deliver_localpart;
 	const uschar * save_domain = deliver_domain;
+	uschar * addr = new->address, * errmsg = NULL;
+	int start, end, dom;
 
-	deliver_localpart = expand_string(
-		      string_sprintf("${local_part:%s}", new->address));
-	deliver_domain =    expand_string(
-		      string_sprintf("${domain:%s}", new->address));
+	if (!parse_extract_address(addr, &errmsg, &start, &end, &dom, TRUE))
+	  log_write(0, LOG_MAIN|LOG_PANIC,
+                "failed to parse address '%.100s': %s\n", addr, errmsg);
+	else
+	  {
+	  deliver_localpart =
+	    string_copyn(addr+start, dom ? (dom-1) - start : end - start);
+	  deliver_domain = dom ? CUS string_copyn(addr+dom, end - dom) : CUS"";
 
-	(void) event_raise(event_action,
-		      US"msg:fail:internal", new->message);
+	  event_raise(event_action, US"msg:fail:internal", new->message);
 
-	deliver_localpart = save_local;
-	deliver_domain =    save_domain;
+	  deliver_localpart = save_local;
+	  deliver_domain = save_domain;
+	  }
 	}
 #endif
       }
-- 
2.11.0