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add missing WOLFSSL_QUIC_MAX_RECORD_CAPACITY check on the early-data #10201

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Merged
SparkiDev merged 2 commits into from
Apr 15, 2026
+65 −0
Merged

add missing WOLFSSL_QUIC_MAX_RECORD_CAPACITY check on the early-data #10201

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ef4e11b
add missing WOLFSSL_QUIC_MAX_RECORD_CAPACITY check on the early-data …
gasbytes Apr 13, 2026
1576cf9
add exact-boundary tests at wolfssl_quic_max_record_capacity and cap+…
gasbytes Apr 15, 2026
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5 changes: 5 additions & 0 deletions src/quic.c
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Original file line number Diff line number Diff line change
Expand Up @@ -76,6 +76,11 @@ static QuicRecord *quic_record_make(WOLFSSL *ssl,
qr->level = level;
if (level == wolfssl_encryption_early_data) {
qr->capacity = qr->len = (word32)len;
if (qr->capacity > WOLFSSL_QUIC_MAX_RECORD_CAPACITY) {
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WOLFSSL_MSG("QUIC early data length larger than expected");
quic_record_free(ssl, qr);
return NULL;
}
}
else {
qr->capacity = qr->len = (word32) qr_length(data, len);
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60 changes: 60 additions & 0 deletions tests/quic.c
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Expand Up @@ -390,6 +390,65 @@ static int test_provide_quic_data(void) {
return EXPECT_RESULT();
}

static int test_quic_record_cap(void) {
EXPECT_DECLS;
WOLFSSL_CTX * ctx = NULL;
WOLFSSL * ssl = NULL;
size_t over = (size_t)WOLFSSL_QUIC_MAX_RECORD_CAPACITY + 512U * 1024U;
uint8_t * buf = NULL;
uint8_t hdr[4];
word32 rlen;

ExpectNotNull(buf = (uint8_t*)XMALLOC(over, NULL, DYNAMIC_TYPE_TMP_BUFFER));
if (buf != NULL)
XMEMSET(buf, 0, over);

ExpectNotNull(ctx = wolfSSL_CTX_new(wolfTLSv1_3_client_method()));
ExpectTrue(wolfSSL_CTX_set_quic_method(ctx, &dummy_method) == WOLFSSL_SUCCESS);

/* early_data with over-cap length must be rejected */
ExpectNotNull(ssl = wolfSSL_new(ctx));
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ExpectTrue(provide_data(ssl, wolfssl_encryption_early_data, buf, over, 1));
wolfSSL_free(ssl);
ssl = NULL;

/* early_data at exactly cap must succeed */
ExpectNotNull(ssl = wolfSSL_new(ctx));
ExpectTrue(provide_data(ssl, wolfssl_encryption_early_data, buf,
WOLFSSL_QUIC_MAX_RECORD_CAPACITY, 0));
wolfSSL_free(ssl);
ssl = NULL;

/* early_data at cap+1 must be rejected */
ExpectNotNull(ssl = wolfSSL_new(ctx));
ExpectTrue(provide_data(ssl, wolfssl_encryption_early_data, buf,
(size_t)WOLFSSL_QUIC_MAX_RECORD_CAPACITY + 1U, 1));
wolfSSL_free(ssl);
ssl = NULL;

/* early_data well within cap must succeed */
ExpectNotNull(ssl = wolfSSL_new(ctx));
ExpectTrue(provide_data(ssl, wolfssl_encryption_early_data, buf, 1024, 0));
wolfSSL_free(ssl);
ssl = NULL;

/* handshake with over-cap record header must also be rejected */
rlen = (word32)WOLFSSL_QUIC_MAX_RECORD_CAPACITY + 16U - 4U;
hdr[0] = 0x16;
hdr[1] = (byte)(rlen >> 16);
hdr[2] = (byte)(rlen >> 8);
hdr[3] = (byte)rlen;
ExpectNotNull(ssl = wolfSSL_new(ctx));
ExpectTrue(provide_data(ssl, wolfssl_encryption_handshake, hdr, 4, 1));
wolfSSL_free(ssl);

wolfSSL_CTX_free(ctx);
if (buf != NULL)
XFREE(buf, NULL, DYNAMIC_TYPE_TMP_BUFFER);

printf(" test_quic_record_cap: %s\n", (EXPECT_SUCCESS()) ? pass : fail);
return EXPECT_RESULT();
}

static int test_quic_crypt(void) {
EXPECT_DECLS;
Expand Down Expand Up @@ -1939,6 +1998,7 @@ int QuicTest(void)
if ((ret = test_set_quic_method()) != TEST_SUCCESS) goto leave;
#ifndef NO_WOLFSSL_CLIENT
if ((ret = test_provide_quic_data()) != TEST_SUCCESS) goto leave;
if ((ret = test_quic_record_cap()) != TEST_SUCCESS) goto leave;
if ((ret = test_quic_crypt()) != TEST_SUCCESS) goto leave;
if ((ret = test_quic_client_hello(verbose)) != TEST_SUCCESS) goto leave;
#endif
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