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fix(crypto): add protections for decryption

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Hivert Quentin
2024-02-09 16:16:19 +01:00
parent 311c358580
commit a6319e1689
4 changed files with 15 additions and 5 deletions
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4
Documentation/SOGoInstallationGuide.asciidoc
View File

@@ -1186,8 +1186,8 @@ Defaults to `NO` when unset.
(with read-only access). Note that if set to `NO`, autocompletion will
not work for entries in this source and thus, freebusy lookups.
!displayName (optional)
!If set as an address book, the human identification name of the LDAP
|displayName (optional)
|If set as an address book, the human identification name of the LDAP
repository
|listRequiresDot (optional)

10
SoObjects/SOGo/NSString+Crypto.m
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@@ -511,7 +511,6 @@ static const NSString *kAES256GCMError = @"kAES256GCMError";
// Clean up
free(plaintext);
return value;
#else
@@ -653,7 +652,7 @@ static const NSString *kAES256GCMError = @"kAES256GCMError";
int status = 0;
EVP_DecryptUpdate(ctx, plaintext, &p_len, [data bytes], [data length]);
outputData = [NSData dataWithBytes: plaintext length: p_len];
outputData = [NSData dataWithBytes: (char *)plaintext length: p_len];
EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_GCM_SET_TAG, GMC_TAG_LEN, (void *)[tagData bytes]);
rv = EVP_DecryptFinal_ex(ctx, plaintext + p_len, &f_len);
p_len += f_len;
@@ -672,7 +671,14 @@ static const NSString *kAES256GCMError = @"kAES256GCMError";
// Clean up
free(plaintext);
if(value)
return value;
else
{
*ex = [NSException exceptionWithName: kAES128ECError reason:@"Could decrypt but value is null" userInfo: nil];
return nil;
}
#else
*ex = [NSException exceptionWithName:kAES256GCMError reason:@"Missing OpenSSL framework" userInfo: nil];

2
SoObjects/SOGo/SOGoUser.m
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@@ -1079,6 +1079,8 @@ static const NSString *kEncryptedUserNamePrefix = @"uenc";
if(exception)
[self errorWithFormat:@"Can't decrypt the password for auxiliary account %@: %@",
[account objectForKey: @"name"], [exception reason]];
else if(!password)
[self errorWithFormat:@"No exception but decyrpted password is empty for account %@",[account objectForKey: @"name"]];
else
[account setObject: password forKey: @"password"];
}

2
UI/PreferencesUI/UIxPreferences.m
View File

@@ -1624,6 +1624,8 @@ static NSArray *reminderValues = nil;
[oldAccount objectForKey: @"name"], [exception reason]];
decryptedPassword = @"";
}
else if(!decryptedPassword)
[self errorWithFormat:@"No exception but decrypted password is empty for account %@",[oldAccount objectForKey: @"name"]];
else
password = decryptedPassword;
NS_HANDLER