From 398e99fe5e06edb11f55a39ce0883d9aa633ffa9 Mon Sep 17 00:00:00 2001
From: "Dr. Stephen Henson" <steve@openssl.org>
Date: Wed, 2 Jul 2014 00:57:57 +0100
Subject: [PATCH] ASN1 sanity check.

Primitive encodings shouldn't use indefinite length constructed
form.

PR#2438 (partial).
---
 crypto/asn1/asn1_lib.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/crypto/asn1/asn1_lib.c b/crypto/asn1/asn1_lib.c
index 74ca7d4fa3..f1360ed735 100644
--- a/crypto/asn1/asn1_lib.c
+++ b/crypto/asn1/asn1_lib.c
@@ -131,6 +131,9 @@ int ASN1_get_object(const unsigned char **pp, long *plength, int *ptag,
 	*pclass=xclass;
 	if (!asn1_get_length(&p,&inf,plength,(int)max)) goto err;
 
+	if (inf && !(ret & V_ASN1_CONSTRUCTED))
+		goto err;
+
 #if 0
 	fprintf(stderr,"p=%d + *plength=%ld > omax=%ld + *pp=%d  (%d > %d)\n", 
 		(int)p,*plength,omax,(int)*pp,(int)(p+ *plength),
-- 
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