Commit 214b8b99 authored by Lutz Jänicke's avatar Lutz Jänicke
Browse files

Fix Kerberos5/SSL interaction 

Submitted by: "Kenneth R. Robinette" <support@securenetterm.com>
Reviewed by:
PR:
parent 2ef9e7ef

ssl/kssl.c

+17 −38
Original line number Diff line number Diff line
@@ -2029,40 +2029,19 @@ krb5_error_code kssl_check_authent( 
		*/

		goto err;

		}

	if (!EVP_DecryptInit_ex(&ciph_ctx, enc, NULL, kssl_ctx->key, iv))



        if (!EVP_CipherInit(&ciph_ctx,enc,kssl_ctx->key,iv,0))

                {

                kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,

                        "EVP_DecryptInit_ex error decrypting authenticator.\n");

                krb5rc = KRB5KRB_AP_ERR_BAD_INTEGRITY;

                goto err;

                }

	if (!EVP_DecryptUpdate(&ciph_ctx, unenc_authent, &outl,

			dec_authent->cipher->data, dec_authent->cipher->length))

		{

		kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,

			"EVP_DecryptUpdate error decrypting authenticator.\n");

		krb5rc = KRB5KRB_AP_ERR_BAD_INTEGRITY;

		goto err;

		}

	if (outl > unencbufsize)

		{

		kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,

                        "Buffer overflow decrypting authenticator.\n");

		krb5rc = KRB5KRB_AP_ERR_BAD_INTEGRITY;

		goto err;

		}

	if (!EVP_DecryptFinal_ex(&ciph_ctx, &(unenc_authent[outl]), &padl))

		{

		kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,

			"EVP_DecryptFinal_ex error decrypting authenticator.\n");

		krb5rc = KRB5KRB_AP_ERR_BAD_INTEGRITY;

		goto err;

		}

	outl += padl;

	if (outl > unencbufsize)

        outl = dec_authent->cipher->length;

        if (!EVP_Cipher(&ciph_ctx,unenc_authent,dec_authent->cipher->data,outl))

                {

                kssl_err_set(kssl_err, SSL_R_KRB5_S_INIT,

                        "Buffer overflow decrypting authenticator.\n");

                        "EVP_Cipher error decrypting authenticator.\n");

                krb5rc = KRB5KRB_AP_ERR_BAD_INTEGRITY;

                goto err;

                }