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Revision 098f27f9ef8be2a418f76896ee3c824e8709fcf7 authored by Matt Caswell on 17 October 2023, 13:55:48 UTC, committed by Tomas Mraz on 19 October 2023, 09:54:44 UTC
Ignore ping deadline when calculating tick deadline if we can't send
If the CC TX allowance is zero then we cannot send a PING frame at the
moment, so do not take into account the ping deadline when calculating the
tick deadline in that case.

This avoids the hang found by the fuzzer mentioned in
https://github.com/openssl/openssl/pull/22368#issuecomment-1765131727

Reviewed-by: Hugo Landau <hlandau@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/22410)
1 parent 56e3032
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  • test
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  • afalgtest.c
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afalgtest.c
/*
 * Copyright 2016-2023 The OpenSSL Project Authors. All Rights Reserved.
 *
 * Licensed under the Apache License 2.0 (the "License").  You may not use
 * this file except in compliance with the License.  You can obtain a copy
 * in the file LICENSE in the source distribution or at
 * https://www.openssl.org/source/license.html
 */

/* We need to use some engine deprecated APIs */
#define OPENSSL_SUPPRESS_DEPRECATED

#include <stdio.h>
#include <openssl/opensslconf.h>

#include <string.h>
#include <openssl/engine.h>
#include <openssl/evp.h>
#include <openssl/rand.h>
#include "testutil.h"

/* Use a buffer size which is not aligned to block size */
#define BUFFER_SIZE     17

#ifndef OPENSSL_NO_ENGINE
static ENGINE *e;

static int test_afalg_aes_cbc(int keysize_idx)
{
    EVP_CIPHER_CTX *ctx;
    const EVP_CIPHER *cipher;
    unsigned char ebuf[BUFFER_SIZE + 32];
    unsigned char dbuf[BUFFER_SIZE + 32];
    const unsigned char *enc_result = NULL;
    int encl, encf, decl, decf;
    int ret = 0;
    static const unsigned char key[] =
        "\x06\xa9\x21\x40\x36\xb8\xa1\x5b\x51\x2e\x03\xd5\x34\x12\x00\x06"
        "\x06\xa9\x21\x40\x36\xb8\xa1\x5b\x51\x2e\x03\xd5\x34\x12\x00\x06";
    static const unsigned char iv[] =
        "\x3d\xaf\xba\x42\x9d\x9e\xb4\x30\xb4\x22\xda\x80\x2c\x9f\xac\x41";
    /* input = "Single block msg\n" 17 Bytes*/
    static const unsigned char in[BUFFER_SIZE] =
        "\x53\x69\x6e\x67\x6c\x65\x20\x62\x6c\x6f\x63\x6b\x20\x6d\x73\x67"
        "\x0a";
    static const unsigned char encresult_128[BUFFER_SIZE] =
        "\xe3\x53\x77\x9c\x10\x79\xae\xb8\x27\x08\x94\x2d\xbe\x77\x18\x1a"
        "\x2d";
    static const unsigned char encresult_192[BUFFER_SIZE] =
        "\xf7\xe4\x26\xd1\xd5\x4f\x8f\x39\xb1\x9e\xe0\xdf\x61\xb9\xc2\x55"
        "\xeb";
    static const unsigned char encresult_256[BUFFER_SIZE] =
        "\xa0\x76\x85\xfd\xc1\x65\x71\x9d\xc7\xe9\x13\x6e\xae\x55\x49\xb4"
        "\x13";

#ifdef OSSL_SANITIZE_MEMORY
    /*
     * Initialise the encryption & decryption buffers to pacify the memory
     * sanitiser.  The sanitiser doesn't know that this memory is modified
     * by the engine, this tells it that all is good.
     */
    OPENSSL_cleanse(ebuf, sizeof(ebuf));
    OPENSSL_cleanse(dbuf, sizeof(dbuf));
#endif

    switch (keysize_idx) {
        case 0:
            cipher = EVP_aes_128_cbc();
            enc_result = &encresult_128[0];
            break;
        case 1:
            cipher = EVP_aes_192_cbc();
            enc_result = &encresult_192[0];
            break;
        case 2:
            cipher = EVP_aes_256_cbc();
            enc_result = &encresult_256[0];
            break;
        default:
            cipher = NULL;
    }
    if (!TEST_ptr(ctx = EVP_CIPHER_CTX_new()))
            return 0;

    if (!TEST_true(EVP_CipherInit_ex(ctx, cipher, e, key, iv, 1))
            || !TEST_true(EVP_CipherUpdate(ctx, ebuf, &encl, in, BUFFER_SIZE))
            || !TEST_true(EVP_CipherFinal_ex(ctx, ebuf + encl, &encf)))
        goto end;
    encl += encf;

    if (!TEST_mem_eq(enc_result, BUFFER_SIZE, ebuf, BUFFER_SIZE))
        goto end;

    if (!TEST_true(EVP_CIPHER_CTX_reset(ctx))
            || !TEST_true(EVP_CipherInit_ex(ctx, cipher, e, key, iv, 0))
            || !TEST_true(EVP_CipherUpdate(ctx, dbuf, &decl, ebuf, encl))
            || !TEST_true(EVP_CipherFinal_ex(ctx, dbuf + decl, &decf)))
        goto end;
    decl += decf;

    if (!TEST_int_eq(decl, BUFFER_SIZE)
            || !TEST_mem_eq(dbuf, BUFFER_SIZE, in, BUFFER_SIZE))
        goto end;

    ret = 1;

 end:
    EVP_CIPHER_CTX_free(ctx);
    return ret;
}

static int test_pr16743(void)
{
    int ret = 0;
    const EVP_CIPHER *cipher;
    EVP_CIPHER_CTX *ctx;

    if (!TEST_true(ENGINE_init(e)))
        return 0;
    cipher = ENGINE_get_cipher(e, NID_aes_128_cbc);
    ctx = EVP_CIPHER_CTX_new();
    if (cipher != NULL && ctx != NULL)
        ret = EVP_EncryptInit_ex(ctx, cipher, e, NULL, NULL);
    TEST_true(ret);
    EVP_CIPHER_CTX_free(ctx);
    ENGINE_finish(e);
    return ret;
}

int global_init(void)
{
    ENGINE_load_builtin_engines();
# ifndef OPENSSL_NO_STATIC_ENGINE
    OPENSSL_init_crypto(OPENSSL_INIT_ENGINE_AFALG, NULL);
# endif
    return 1;
}
#endif

int setup_tests(void)
{
#ifndef OPENSSL_NO_ENGINE
    if ((e = ENGINE_by_id("afalg")) == NULL) {
        /* Probably a platform env issue, not a test failure. */
        TEST_info("Can't load AFALG engine");
    } else {
        ADD_ALL_TESTS(test_afalg_aes_cbc, 3);
        ADD_TEST(test_pr16743);
    }
#endif

    return 1;
}

#ifndef OPENSSL_NO_ENGINE
void cleanup_tests(void)
{
    ENGINE_free(e);
}
#endif
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