mirrors/wolfssl
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

downgrade with options set when using opensslextra feature

Browse Source
This commit is contained in:
Jacob Barthelmeh 2017-08-24 13:13:03 -06:00
parent 3da5ddd49e
commit f7ea118dd7
2 changed files with 117 additions and 26 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

124
src/internal.c
View File

@ -6494,32 +6494,6 @@ static int GetRecordHeader(WOLFSSL* ssl, const byte* input, word32* inOutIdx,
}
#endif
#ifdef OPENSSL_EXTRA
/* case where specific protocols are turned off */
if (!ssl->options.dtls && ssl->options.mask > 0) {
if (rh->pvMinor == SSLv3_MINOR &&
(ssl->options.mask & SSL_OP_NO_SSLv3) == SSL_OP_NO_SSLv3) {
WOLFSSL_MSG("Option set to not allow SSLv3");
return VERSION_ERROR;
}
if (rh->pvMinor == TLSv1_MINOR &&
(ssl->options.mask & SSL_OP_NO_TLSv1) == SSL_OP_NO_TLSv1) {
WOLFSSL_MSG("Option set to not allow TLSv1");
return VERSION_ERROR;
}
if (rh->pvMinor == TLSv1_1_MINOR &&
(ssl->options.mask & SSL_OP_NO_TLSv1_1) == SSL_OP_NO_TLSv1_1) {
WOLFSSL_MSG("Option set to not allow TLSv1.1");
return VERSION_ERROR;
}
if (rh->pvMinor == TLSv1_2_MINOR &&
(ssl->options.mask & SSL_OP_NO_TLSv1_2) == SSL_OP_NO_TLSv1_2) {
WOLFSSL_MSG("Option set to not allow TLSv1.2");
return VERSION_ERROR;
}
}
#endif /* OPENSSL_EXTRA */
/* catch version mismatch */
#ifndef WOLFSSL_TLS13
if (rh->pvMajor != ssl->version.major || rh->pvMinor != ssl->version.minor)
@ -16694,6 +16668,42 @@ void PickHashSigAlgo(WOLFSSL* ssl, const byte* hashSigAlgo,
}
}
#ifdef OPENSSL_EXTRA
/* check if option is set to not allow the current version
* set from either wolfSSL_set_options or wolfSSL_CTX_set_options */
if (!ssl->options.dtls && ssl->options.downgrade &&
ssl->options.mask > 0) {
if (ssl->version.minor == TLSv1_2_MINOR &&
(ssl->options.mask & SSL_OP_NO_TLSv1_2) == SSL_OP_NO_TLSv1_2) {
WOLFSSL_MSG("\tOption set to not allow TLSv1.2, Downgrading");
ssl->version.minor = TLSv1_1_MINOR;
}
if (ssl->version.minor == TLSv1_1_MINOR &&
(ssl->options.mask & SSL_OP_NO_TLSv1_1) == SSL_OP_NO_TLSv1_1) {
WOLFSSL_MSG("\tOption set to not allow TLSv1.1, Downgrading");
ssl->options.tls1_1 = 0;
ssl->version.minor = TLSv1_MINOR;
}
if (ssl->version.minor == TLSv1_MINOR &&
(ssl->options.mask & SSL_OP_NO_TLSv1) == SSL_OP_NO_TLSv1) {
WOLFSSL_MSG("\tOption set to not allow TLSv1, Downgrading");
ssl->options.tls = 0;
ssl->options.tls1_1 = 0;
ssl->version.minor = SSLv3_MINOR;
}
if (ssl->version.minor == SSLv3_MINOR &&
(ssl->options.mask & SSL_OP_NO_SSLv3) == SSL_OP_NO_SSLv3) {
WOLFSSL_MSG("\tError, option set to not allow SSLv3");
return VERSION_ERROR;
}
if (ssl->version.minor < ssl->options.minDowngrade) {
WOLFSSL_MSG("\tversion below minimum allowed, fatal error");
return VERSION_ERROR;
}
}
#endif
return 0;
}
@ -22437,6 +22447,68 @@ static int DoSessionTicket(WOLFSSL* ssl, const byte* input, word32* inOutIdx,
ssl->options.haveStaticECC, ssl->options.side);
}
#ifdef OPENSSL_EXTRA
/* check if option is set to not allow the current version
* set from either wolfSSL_set_options or wolfSSL_CTX_set_options */
if (!ssl->options.dtls && ssl->options.downgrade &&
ssl->options.mask > 0) {
int reset = 0;
if (ssl->version.minor == TLSv1_2_MINOR &&
(ssl->options.mask & SSL_OP_NO_TLSv1_2) == SSL_OP_NO_TLSv1_2) {
WOLFSSL_MSG("\tOption set to not allow TLSv1.2, Downgrading");
ssl->version.minor = TLSv1_1_MINOR;
reset = 1;
}
if (ssl->version.minor == TLSv1_1_MINOR &&
(ssl->options.mask & SSL_OP_NO_TLSv1_1) == SSL_OP_NO_TLSv1_1) {
WOLFSSL_MSG("\tOption set to not allow TLSv1.1, Downgrading");
ssl->options.tls1_1 = 0;
ssl->version.minor = TLSv1_MINOR;
reset = 1;
}
if (ssl->version.minor == TLSv1_MINOR &&
(ssl->options.mask & SSL_OP_NO_TLSv1) == SSL_OP_NO_TLSv1) {
WOLFSSL_MSG("\tOption set to not allow TLSv1, Downgrading");
ssl->options.tls = 0;
ssl->options.tls1_1 = 0;
ssl->version.minor = SSLv3_MINOR;
reset = 1;
}
if (ssl->version.minor == SSLv3_MINOR &&
(ssl->options.mask & SSL_OP_NO_SSLv3) == SSL_OP_NO_SSLv3) {
WOLFSSL_MSG("\tError, option set to not allow SSLv3");
return VERSION_ERROR;
}
if (ssl->version.minor < ssl->options.minDowngrade) {
WOLFSSL_MSG("\tversion below minimum allowed, fatal error");
return VERSION_ERROR;
}
if (reset) {
word16 haveRSA = 0;
word16 havePSK = 0;
int keySz = 0;
#ifndef NO_RSA
haveRSA = 1;
#endif
#ifndef NO_PSK
havePSK = ssl->options.havePSK;
#endif
#ifndef NO_CERTS
keySz = ssl->buffers.keySz;
#endif
/* reset cipher suites to account for TLS version change */
InitSuites(ssl->suites, ssl->version, keySz, haveRSA, havePSK,
ssl->options.haveDH, ssl->options.haveNTRU,
ssl->options.haveECDSAsig, ssl->options.haveECC,
ssl->options.haveStaticECC, ssl->options.side);
}
}
#endif
/* random */
XMEMCPY(ssl->arrays->clientRandom, input + i, RAN_LEN);
#ifdef WOLFSSL_DTLS

19
src/ssl.c
View File

@ -16289,6 +16289,10 @@ int wolfSSL_PEM_def_callback(char* name, int num, int w, void* key)
unsigned long wolfSSL_set_options(WOLFSSL* ssl, unsigned long op)
{
word16 haveRSA = 1;
word16 havePSK = 0;
int keySz = 0;
WOLFSSL_ENTER("wolfSSL_set_options");
if (ssl == NULL) {
@ -16360,6 +16364,21 @@ unsigned long wolfSSL_set_options(WOLFSSL* ssl, unsigned long op)
#endif
}
/* in the case of a version change the cipher suites should be reset */
#ifndef NO_PSK
havePSK = ssl->options.havePSK;
#endif
#ifdef NO_RSA
haveRSA = 0;
#endif
#ifndef NO_CERTS
keySz = ssl->buffers.keySz;
#endif
InitSuites(ssl->suites, ssl->version, keySz, haveRSA, havePSK,
ssl->options.haveDH, ssl->options.haveNTRU,
ssl->options.haveECDSAsig, ssl->options.haveECC,
ssl->options.haveStaticECC, ssl->options.side);
return ssl->options.mask;
}