Skip signature validation on selfsigned certificates and drop MD2 algorithm from the list of algorithms added to EVP tables by default. (CVE-2009-2409) diff -up openssl-fips-0.9.8e/crypto/evp/c_alld.c.nomd2 openssl-fips-0.9.8e/crypto/evp/c_alld.c --- openssl-fips-0.9.8e/crypto/evp/c_alld.c.nomd2 2009-04-15 13:48:51.000000000 +0200 +++ openssl-fips-0.9.8e/crypto/evp/c_alld.c 2010-01-14 09:24:00.000000000 +0100 @@ -69,9 +69,6 @@ void OpenSSL_add_all_digests(void) if (!FIPS_mode()) { #endif -#ifndef OPENSSL_NO_MD2 - EVP_add_digest(EVP_md2()); -#endif #ifndef OPENSSL_NO_MD4 EVP_add_digest(EVP_md4()); #endif diff -up openssl-fips-0.9.8e/crypto/x509/x509_vfy.c.nomd2 openssl-fips-0.9.8e/crypto/x509/x509_vfy.c --- openssl-fips-0.9.8e/crypto/x509/x509_vfy.c.nomd2 2009-04-15 13:48:51.000000000 +0200 +++ openssl-fips-0.9.8e/crypto/x509/x509_vfy.c 2010-01-14 09:22:49.000000000 +0100 @@ -1013,7 +1013,11 @@ static int internal_verify(X509_STORE_CT while (n >= 0) { ctx->error_depth=n; - if (!xs->valid) + + /* Skip signature check for self signed certificates. It + * doesn't add any security and just wastes time. + */ + if (!xs->valid && xs != xi) { if ((pkey=X509_get_pubkey(xi)) == NULL) { @@ -1023,13 +1027,6 @@ static int internal_verify(X509_STORE_CT if (!ok) goto end; } else if (X509_verify(xs,pkey) <= 0) - /* XXX For the final trusted self-signed cert, - * this is a waste of time. That check should - * optional so that e.g. 'openssl x509' can be - * used to detect invalid self-signatures, but - * we don't verify again and again in SSL - * handshakes and the like once the cert has - * been declared trusted. */ { ctx->error=X509_V_ERR_CERT_SIGNATURE_FAILURE; ctx->current_cert=xs; diff -up openssl-fips-0.9.8e/ssl/ssl_algs.c.nomd2 openssl-fips-0.9.8e/ssl/ssl_algs.c --- openssl-fips-0.9.8e/ssl/ssl_algs.c.nomd2 2009-04-15 14:09:42.000000000 +0200 +++ openssl-fips-0.9.8e/ssl/ssl_algs.c 2010-01-14 09:23:10.000000000 +0100 @@ -94,9 +94,6 @@ int SSL_library_init(void) EVP_add_cipher(EVP_seed_cbc()); #endif -#ifndef OPENSSL_NO_MD2 - EVP_add_digest(EVP_md2()); -#endif #ifndef OPENSSL_NO_MD5 EVP_add_digest(EVP_md5()); EVP_add_digest_alias(SN_md5,"ssl2-md5");