From 71bbc79b7d3b1195a7a7dd5f547d52ddce32d6f0 Mon Sep 17 00:00:00 2001 From: "Dr. Stephen Henson" Date: Thu, 8 Dec 2016 12:16:02 +0000 Subject: Check input length to pkey_rsa_verify() Reviewed-by: Rich Salz (Merged from https://github.com/openssl/openssl/pull/2065) --- crypto/rsa/rsa_err.c | 1 + crypto/rsa/rsa_pmeth.c | 4 ++++ 2 files changed, 5 insertions(+) (limited to 'crypto/rsa') diff --git a/crypto/rsa/rsa_err.c b/crypto/rsa/rsa_err.c index 45e12e0dd3..bf54095b70 100644 --- a/crypto/rsa/rsa_err.c +++ b/crypto/rsa/rsa_err.c @@ -26,6 +26,7 @@ static ERR_STRING_DATA RSA_str_functs[] = { {ERR_FUNC(RSA_F_PKEY_RSA_CTRL), "pkey_rsa_ctrl"}, {ERR_FUNC(RSA_F_PKEY_RSA_CTRL_STR), "pkey_rsa_ctrl_str"}, {ERR_FUNC(RSA_F_PKEY_RSA_SIGN), "pkey_rsa_sign"}, + {ERR_FUNC(RSA_F_PKEY_RSA_VERIFY), "pkey_rsa_verify"}, {ERR_FUNC(RSA_F_PKEY_RSA_VERIFYRECOVER), "pkey_rsa_verifyrecover"}, {ERR_FUNC(RSA_F_RSA_ALGOR_TO_MD), "rsa_algor_to_md"}, {ERR_FUNC(RSA_F_RSA_BUILTIN_KEYGEN), "rsa_builtin_keygen"}, diff --git a/crypto/rsa/rsa_pmeth.c b/crypto/rsa/rsa_pmeth.c index e503ada873..db4fb0fbf7 100644 --- a/crypto/rsa/rsa_pmeth.c +++ b/crypto/rsa/rsa_pmeth.c @@ -229,6 +229,10 @@ static int pkey_rsa_verify(EVP_PKEY_CTX *ctx, if (rctx->pad_mode == RSA_PKCS1_PADDING) return RSA_verify(EVP_MD_type(rctx->md), tbs, tbslen, sig, siglen, rsa); + if (tbslen != (size_t)EVP_MD_size(rctx->md)) { + RSAerr(RSA_F_PKEY_RSA_VERIFY, RSA_R_INVALID_DIGEST_LENGTH); + return -1; + } if (rctx->pad_mode == RSA_X931_PADDING) { if (pkey_rsa_verifyrecover(ctx, NULL, &rslen, sig, siglen) <= 0) return 0; -- cgit v1.2.3