Reject leading 0x80 in OID subidentifiers.
authorDr. Stephen Henson <steve@openssl.org>
Thu, 6 Aug 2009 16:32:54 +0000 (16:32 +0000)
committerDr. Stephen Henson <steve@openssl.org>
Thu, 6 Aug 2009 16:32:54 +0000 (16:32 +0000)
CHANGES
crypto/asn1/a_object.c
crypto/asn1/asn1.h
crypto/asn1/asn1_err.c

diff --git a/CHANGES b/CHANGES
index b9490b1..9974ccb 100644 (file)
--- a/CHANGES
+++ b/CHANGES
 
  Changes between 0.9.8k and 0.9.8l  [xx XXX xxxx]
 
+  *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
+     X690 8.9.12 and can produce some misleading textual output of OIDs.
+     [Steve Henson, reported by Dan Kaminsky]
+
   *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
      and restored.
      [Steve Henson]
index f1a5a1e..bd2d5a2 100644 (file)
@@ -290,6 +290,17 @@ ASN1_OBJECT *c2i_ASN1_OBJECT(ASN1_OBJECT **a, const unsigned char **pp,
        const unsigned char *p;
        unsigned char *data;
        int i;
+       /* Sanity check OID encoding: can't have 0x80 in subidentifiers, see:
+        * X.690 8.19.2
+        */
+       for (i = 0, p = *pp + 1; i < len - 1; i++, p++)
+               {
+               if (*p == 0x80)
+                       {
+                       ASN1err(ASN1_F_C2I_ASN1_OBJECT,ASN1_R_INVALID_OBJECT_ENCODING);
+                       return NULL;
+                       }
+               }
 
        /* only the ASN1_OBJECTs from the 'table' will have values
         * for ->sn or ->ln */
index c1af4e7..f202e23 100644 (file)
@@ -1328,6 +1328,7 @@ void ERR_load_ASN1_strings(void);
 #define ASN1_R_INVALID_MIME_TYPE                        205
 #define ASN1_R_INVALID_MODIFIER                                 186
 #define ASN1_R_INVALID_NUMBER                           187
+#define ASN1_R_INVALID_OBJECT_ENCODING                  216
 #define ASN1_R_INVALID_SEPARATOR                        131
 #define ASN1_R_INVALID_TIME_FORMAT                      132
 #define ASN1_R_INVALID_UNIVERSALSTRING_LENGTH           133
index 664f158..6e04d08 100644 (file)
@@ -1,6 +1,6 @@
 /* crypto/asn1/asn1_err.c */
 /* ====================================================================
- * Copyright (c) 1999-2008 The OpenSSL Project.  All rights reserved.
+ * Copyright (c) 1999-2009 The OpenSSL Project.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -248,6 +248,7 @@ static ERR_STRING_DATA ASN1_str_reasons[]=
 {ERR_REASON(ASN1_R_INVALID_MIME_TYPE)    ,"invalid mime type"},
 {ERR_REASON(ASN1_R_INVALID_MODIFIER)     ,"invalid modifier"},
 {ERR_REASON(ASN1_R_INVALID_NUMBER)       ,"invalid number"},
+{ERR_REASON(ASN1_R_INVALID_OBJECT_ENCODING),"invalid object encoding"},
 {ERR_REASON(ASN1_R_INVALID_SEPARATOR)    ,"invalid separator"},
 {ERR_REASON(ASN1_R_INVALID_TIME_FORMAT)  ,"invalid time format"},
 {ERR_REASON(ASN1_R_INVALID_UNIVERSALSTRING_LENGTH),"invalid universalstring length"},