Oops, forgot to "cvs rm" an obsolete patch file.

Thanks to wiz@ noted via mail.
This commit is contained in:
taca 2013-02-13 15:09:48 +00:00
parent 27de1b18e4
commit 5740baec1d

View file

@ -1,67 +0,0 @@
$NetBSD: patch-ssl_s3__cbc.c,v 1.1 2013/02/08 14:11:08 jperkin Exp $
Apply data-corruption patch from:
http://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=32cc247
Fix IV check and padding removal.
Fix the calculation that checks there is enough room in a record
after removing padding and optional explicit IV. (by Steve)
For AEAD remove the correct number of padding bytes (by Andy)
--- ssl/s3_cbc.c
+++ ssl/s3_cbc.c
@@ -139,31 +139,22 @@ int tls1_cbc_remove_padding(const SSL* s,
unsigned mac_size)
{
unsigned padding_length, good, to_check, i;
- const char has_explicit_iv =
- s->version >= TLS1_1_VERSION || s->version == DTLS1_VERSION;
- const unsigned overhead = 1 /* padding length byte */ +
- mac_size +
- (has_explicit_iv ? block_size : 0);
-
- /* These lengths are all public so we can test them in non-constant
- * time. */
- if (overhead > rec->length)
- return 0;
-
- /* We can always safely skip the explicit IV. We check at the beginning
- * of this function that the record has at least enough space for the
- * IV, MAC and padding length byte. (These can be checked in
- * non-constant time because it's all public information.) So, if the
- * padding was invalid, then we didn't change |rec->length| and this is
- * safe. If the padding was valid then we know that we have at least
- * overhead+padding_length bytes of space and so this is still safe
- * because overhead accounts for the explicit IV. */
- if (has_explicit_iv)
+ const unsigned overhead = 1 /* padding length byte */ + mac_size;
+ /* Check if version requires explicit IV */
+ if (s->version >= TLS1_1_VERSION || s->version == DTLS1_VERSION)
{
+ /* These lengths are all public so we can test them in
+ * non-constant time.
+ */
+ if (overhead + block_size > rec->length)
+ return 0;
+ /* We can now safely skip explicit IV */
rec->data += block_size;
rec->input += block_size;
rec->length -= block_size;
}
+ else if (overhead > rec->length)
+ return 0;
padding_length = rec->data[rec->length-1];
@@ -190,7 +181,7 @@ int tls1_cbc_remove_padding(const SSL* s,
if (EVP_CIPHER_flags(s->enc_read_ctx->cipher)&EVP_CIPH_FLAG_AEAD_CIPHER)
{
/* padding is already verified */
- rec->length -= padding_length;
+ rec->length -= padding_length + 1;
return 1;
}