File openssl-CVE-2016-2107.patch of Package openssl.6982

Overview Repositories Revisions Requests Users Attributes Meta

File openssl-CVE-2016-2107.patch of Package openssl.6982

From 9e79d38892dc30c874934e0aef7409d31d4bf37f Mon Sep 17 00:00:00 2001
From: Kurt Roeckx <kurt@roeckx.be>
Date: Sat, 16 Apr 2016 23:08:56 +0200
Subject: [PATCH] Check that we have enough padding characters.

CVE-2016-2107
---
 crypto/evp/e_aes_cbc_hmac_sha1.c   | 3 +++
 crypto/evp/e_aes_cbc_hmac_sha256.c | 3 +++
 2 files changed, 6 insertions(+), 0 deletions(-)

Index: openssl-1.0.1i/crypto/evp/e_aes_cbc_hmac_sha1.c
===================================================================
--- openssl-1.0.1i.orig/crypto/evp/e_aes_cbc_hmac_sha1.c	2016-04-28 15:02:07.475493236 +0200
+++ openssl-1.0.1i/crypto/evp/e_aes_cbc_hmac_sha1.c	2016-04-28 15:05:07.046449751 +0200
@@ -59,6 +59,7 @@
 #include <openssl/aes.h>
 #include <openssl/sha.h>
 #include "evp_locl.h"
+#include "constant_time_locl.h"
 
 #ifndef EVP_CIPH_FLAG_AEAD_CIPHER
 #define EVP_CIPH_FLAG_AEAD_CIPHER	0x200000
@@ -282,6 +283,8 @@ static int aesni_cbc_hmac_sha1_cipher(EV
 			maxpad |= (255-maxpad)>>(sizeof(maxpad)*8-8);
 			maxpad &= 255;
 
+			ret &= constant_time_ge(maxpad, pad);
+
 			inp_len = len - (SHA_DIGEST_LENGTH+pad+1);
 			mask = (0-((inp_len-len)>>(sizeof(inp_len)*8-1)));
 			inp_len &= mask;

Places

File openssl-CVE-2016-2107.patch of Package openssl.6982

Places