From 30c03a7df9a638b3c94d0405dd40a9fa1a57832c Mon Sep 17 00:00:00 2001
From: Tobias Brunner <tobias@strongswan.org>
Date: Wed, 29 Mar 2017 11:19:30 +0200
Subject: [PATCH] pem: Don't read beyond line ends

---
 src/libstrongswan/plugins/pem/pem_builder.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/libstrongswan/plugins/pem/pem_builder.c b/src/libstrongswan/plugins/pem/pem_builder.c
index 719a2a69e0..cda7037416 100644
--- a/src/libstrongswan/plugins/pem/pem_builder.c
+++ b/src/libstrongswan/plugins/pem/pem_builder.c
@@ -61,7 +61,7 @@ static bool find_boundary(char* tag, chunk_t *line)
 
 	if (!present("-----", line) ||
 		!present(tag, line) ||
-		*line->ptr != ' ')
+		!line->len || *line->ptr != ' ')
 	{
 		return FALSE;
 	}
@@ -306,7 +306,7 @@ static status_t pem_to_bin(chunk_t *blob, bool *pgp)
 				}
 
 				/* check for PGP armor checksum */
-				if (*data.ptr == '=')
+				if (data.len && *data.ptr == '=')
 				{
 					*pgp = TRUE;
 					data.ptr++;
-- 
2.47.2