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From d795f5f20a29adecf92c09459a3ee07ffac01a99 Mon Sep 17 00:00:00 2001
From: Rich Salz <rsalz@akamai.com>
Date: Sat, 13 Jun 2015 17:03:39 -0400
Subject: [PATCH] Use SHA256 not MD5 as default digest.
Commit f8547f62c212837dbf44fb7e2755e5774a59a57b upstream.
Upstream-Status: Backport
Backport from OpenSSL 2.0 to OpenSSL 1.0.2
Commit f8547f62c212837dbf44fb7e2755e5774a59a57b
CVE: CVE-2004-2761
The MD5 Message-Digest Algorithm is not collision resistant,
which makes it easier for context-dependent attackers to
conduct spoofing attacks, as demonstrated by attacks on the
use of MD5 in the signature algorithm of an X.509 certificate.
Reviewed-by: Viktor Dukhovni <viktor@openssl.org>
Signed-off-by: Zhang Xiao <xiao.zhang@windriver.com>
Signed-off-by: T.O. Radzy Radzykewycz <radzy@windriver.com>
---
apps/ca.c | 2 +-
apps/dgst.c | 2 +-
apps/enc.c | 2 +-
3 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/apps/ca.c b/apps/ca.c
index 3b7336c..8f3a84b 100644
--- a/apps/ca.c
+++ b/apps/ca.c
@@ -1612,7 +1612,7 @@ static int certify_cert(X509 **xret, char *infile, EVP_PKEY *pkey, X509 *x509,
} else
BIO_printf(bio_err, "Signature ok\n");
- if ((rreq = X509_to_X509_REQ(req, NULL, EVP_md5())) == NULL)
+ if ((rreq = X509_to_X509_REQ(req, NULL, NULL)) == NULL)
goto err;
ok = do_body(xret, pkey, x509, dgst, sigopts, policy, db, serial, subj,
diff --git a/apps/dgst.c b/apps/dgst.c
index 95e5fa3..0d1529f 100644
--- a/apps/dgst.c
+++ b/apps/dgst.c
@@ -442,7 +442,7 @@ int MAIN(int argc, char **argv)
goto end;
}
if (md == NULL)
- md = EVP_md5();
+ md = EVP_sha256();
if (!EVP_DigestInit_ex(mctx, md, impl)) {
BIO_printf(bio_err, "Error setting digest %s\n", pname);
ERR_print_errors(bio_err);
diff --git a/apps/enc.c b/apps/enc.c
index 7b7c70b..a7d944c 100644
--- a/apps/enc.c
+++ b/apps/enc.c
@@ -344,7 +344,7 @@ int MAIN(int argc, char **argv)
}
if (dgst == NULL) {
- dgst = EVP_md5();
+ dgst = EVP_sha256();
}
if (bufsize != NULL) {
--
1.9.1
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