OSX/sec/Security/Regressions/secitem/si-29-sectrust-sha1-deprecation.m

   1 /*
   2  * Copyright (c) 2016 Apple Inc. All Rights Reserved.
   3  */
   4
   5 #include <AssertMacros.h>
   6 #import <Foundation/Foundation.h>
   7 #include <Security/SecCertificate.h>
   8 #include <Security/SecCertificatePriv.h>
   9 #include <Security/SecPolicyPriv.h>
  10 #include <Security/SecTrust.h>
  11 #include <utilities/SecCFRelease.h>
  12 #include <Security/SecTrustSettings.h>
  13 #include <Security/SecTrustSettingsPriv.h>
  14
  15 #if TARGET_OS_IPHONE
  16 #include <Security/SecTrustStore.h>
  17 #else
  18 #include <Security/SecKeychain.h>
  19 #endif
  20
  21 #include "shared_regressions.h"
  22
  23 #include "si-29-sectrust-sha1-deprecation.h"
  24
  25 #import <Foundation/Foundation.h>
  26
  27 static SecCertificateRef sha1_root = NULL;
  28
  29 #if TARGET_OS_IPHONE
  30 static SecTrustStoreRef defaultStore = NULL;
  31 #else
  32 #define kSystemLoginKeychainPath "/Library/Keychains/System.keychain"
  33 static NSMutableArray *deleteMeCertificates = NULL;
  34 #endif
  35
  36
  37 static void setup_globals(void) {
  38
  39     sha1_root = SecCertificateCreateWithBytes(NULL, _digiCertRoot, sizeof(_digiCertRoot));
  40
  41 #if TARGET_OS_IPHONE
  42     defaultStore = SecTrustStoreForDomain(kSecTrustStoreDomainUser);
  43 #else
  44     /* Since we're putting trust settings in the admin domain,
  45      * we need to add the certs to the system keychain. */
  46     SecKeychainRef kcRef = NULL;
  47     CFArrayRef certRef = NULL;
  48     NSDictionary *attrs = nil;
  49
  50     SecKeychainOpen(kSystemLoginKeychainPath, &kcRef);
  51     if (!kcRef) {
  52         goto out;
  53     }
  54
  55     deleteMeCertificates = [[NSMutableArray alloc] init];
  56
  57     attrs = @{(__bridge NSString*)kSecValueRef: (__bridge id)sha1_root,
  58               (__bridge NSString*)kSecUseKeychain: (__bridge id)kcRef,
  59               (__bridge NSString*)kSecReturnPersistentRef: @YES};
  60     if (SecItemAdd((CFDictionaryRef)attrs, (void *)&certRef) == 0)
  61         [deleteMeCertificates addObject:(__bridge NSArray *)certRef];
  62     CFReleaseNull(certRef);
  63
  64     out:
  65     CFReleaseNull(kcRef);
  66 #endif
  67 }
  68
  69 static void cleanup_globals(void) {
  70 #if !TARGET_OS_IPHONE
  71     [deleteMeCertificates enumerateObjectsUsingBlock:^(id  _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) {
  72         SecItemDelete((CFDictionaryRef)@{ (__bridge NSString*)kSecValuePersistentRef: [obj objectAtIndex:0]});
  73     }];
  74 #endif
  75
  76     CFReleaseNull(sha1_root);
  77 }
  78
  79
  80 static void setTrust(SecTrustRef *trust, NSArray *certs, SecPolicyRef policy)
  81 {
  82     // November 4, 2016 at 5:53:20 PM PDT
  83     NSDate *verifyDate = [NSDate dateWithTimeIntervalSinceReferenceDate:500000000.0];
  84     CFReleaseNull(*trust);
  85     require_noerr_string(SecTrustCreateWithCertificates((__bridge CFArrayRef)certs, policy, trust), cleanup, "failed to create trust");
  86     require_noerr_string(SecTrustSetVerifyDate(*trust, (__bridge CFDateRef)verifyDate),
  87                          cleanup, "failed to set verify date");
  88 cleanup:
  89     return;
  90 }
  91
  92 static void tests(void)
  93 {
  94     SecCertificateRef sha1_leaf = NULL, sha1_int = NULL,
  95     sha2_leaf = NULL, sha2_int = NULL;
  96     NSArray *anchors = nil, *sha1_certs = nil, *sha2_certs = nil;
  97     SecPolicyRef serverPolicy = NULL, clientPolicy = NULL;
  98     SecTrustRef trust = NULL;
  99     SecTrustResultType trustResult = kSecTrustResultInvalid;
 100
 101     sha1_leaf = SecCertificateCreateWithBytes(NULL, _badssl_sha1, sizeof(_badssl_sha1));
 102     sha1_int = SecCertificateCreateWithBytes(NULL, _digiCertSSCA, sizeof(_digiCertSSCA));
 103     sha2_leaf = SecCertificateCreateWithBytes(NULL, _badssl_sha2, sizeof(_badssl_sha2));
 104     sha2_int = SecCertificateCreateWithBytes(NULL, _COMODO_DV, sizeof(_COMODO_DV));
 105
 106     /* SHA1 cert from system roots fails SSL server policy*/
 107     sha1_certs = @[ (__bridge id)sha1_leaf, (__bridge id)sha1_int];
 108     serverPolicy = SecPolicyCreateSSL(true, CFSTR("www.badssl.com"));
 109     setTrust(&trust, sha1_certs, serverPolicy);
 110     require_noerr_string(SecTrustEvaluate(trust, &trustResult), cleanup, "failed to evaluate trust");
 111     is(trustResult, kSecTrustResultRecoverableTrustFailure, "reject test: system-trusted SHA-1 SSL server");
 112
 113     /* Add trust setting for root */
 114 #if TARGET_OS_IPHONE
 115     require_noerr_string(SecTrustStoreSetTrustSettings(defaultStore, sha1_root, NULL),
 116                          cleanup, "failed to set trust settings");
 117 #else
 118     require_noerr_string(SecTrustSettingsSetTrustSettings(sha1_root, kSecTrustSettingsDomainAdmin,
 119                                                           NULL),
 120                          cleanup, "failed to set trust settings");
 121     usleep(20000);
 122 #endif
 123
 124     /* SHA1 cert now passes SSL server*/
 125     setTrust(&trust, sha1_certs, serverPolicy);
 126     require_noerr_string(SecTrustEvaluate(trust, &trustResult), cleanup, "failed to evaluate trust");
 127     is(trustResult, kSecTrustResultUnspecified, "accept test: user-trusted SHA-1 SSL server");
 128
 129     /* Remove trust setting for root */
 130 #if TARGET_OS_IPHONE
 131     require_noerr_string(SecTrustStoreRemoveCertificate(defaultStore, sha1_root),
 132                          cleanup, "failed to remove trust settings");
 133 #else
 134     require_noerr_string(SecTrustSettingsRemoveTrustSettings(sha1_root, kSecTrustSettingsDomainAdmin),
 135                          cleanup, "failed to remove trust settings");
 136 #endif
 137
 138     /* SHA1 cert fails SSL server */
 139     setTrust(&trust, sha1_certs, serverPolicy);
 140     require_noerr_string(SecTrustEvaluate(trust, &trustResult), cleanup, "failed to evaluate trust");
 141     is(trustResult, kSecTrustResultRecoverableTrustFailure, "reject test: system-trusted SHA-1 SSL server");
 142
 143     /* Set anchor for root */
 144     require_quiet(sha1_root, cleanup);
 145     anchors = @[(__bridge id)sha1_root];
 146     require_noerr_string(SecTrustSetAnchorCertificates(trust, (__bridge CFArrayRef)anchors), cleanup, "failed to set anchors");
 147
 148     /* SHA1 cert passes SSL server */
 149     require_noerr_string(SecTrustEvaluate(trust, &trustResult), cleanup, "failed to evaluate trust");
 150     is(trustResult, kSecTrustResultUnspecified, "accept test: app-trusted SHA-1 SSL server");
 151
 152     /* SHA1 cert from system root passes SSL client */
 153     clientPolicy = SecPolicyCreateSSL(false, CFSTR("www.badssl.com"));
 154     setTrust(&trust, sha1_certs, clientPolicy);
 155     require_noerr_string(SecTrustEvaluate(trust, &trustResult), cleanup, "failed to evaluate trust");
 156     is(trustResult, kSecTrustResultUnspecified, "accept test: system-trusted SHA-1 SSL client");
 157
 158     /* SHA256 cert from system root passes SSL server */
 159     sha2_certs = @[ (__bridge id)sha2_leaf, (__bridge id)sha2_int];
 160     setTrust(&trust, sha2_certs, serverPolicy);
 161     require_noerr_string(SecTrustEvaluate(trust, &trustResult), cleanup, "failed to evaluate trust");
 162     is(trustResult, kSecTrustResultUnspecified, "accept test: system-trusted SHA2 SSL server");
 163
 164 cleanup:
 165     CFReleaseNull(sha1_leaf);
 166     CFReleaseNull(sha1_int);
 167     CFReleaseNull(sha2_leaf);
 168     CFReleaseNull(sha2_int);
 169     CFReleaseNull(serverPolicy);
 170     CFReleaseNull(clientPolicy);
 171     CFReleaseNull(trust);
 172 }
 173
 174 int si_29_sectrust_sha1_deprecation(int argc, char *const *argv)
 175 {
 176     plan_tests(6);
 177
 178     @autoreleasepool {
 179         setup_globals();
 180         tests();
 181         cleanup_globals();
 182     }
 183
 184     return 0;
 185 }