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resolve #1292 ZMQ_IDENTITY_FD does not validate option_len

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This commit is contained in:
Thomas Rodgers
2015-01-08 08:37:28 -06:00
parent 4e9e719ff3
commit 45c6815446
2 changed files with 37 additions and 23 deletions
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6
src/router.cpp
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@@ -142,7 +142,13 @@ int zmq::router_t::xgetsockopt (int option_, const void *optval_,
*optvallen_=sizeof(fd_t);
return 0;
}
if (optval_ && optvallen_ && *optvallen_) {
if (*optvallen_ < sizeof(fd_t)) {
*optvallen_=sizeof(fd_t);
return EINVAL;
}
blob_t identity= blob_t((unsigned char*)optval_,*optvallen_);
outpipes_t::iterator it = outpipes.find (identity);
if (it == outpipes.end() ){

8
tests/test_id2fd.cpp
View File

@@ -61,10 +61,18 @@ int main (void)
//buffer for zmq_getsockopt / ZMQ_IDENTITY_FD
char idbuf[255];
char failbuf[2];
size_t idbufsz=zmq_msg_size (&part);
size_t failsz=2;
assert (idbufsz<=255);
memcpy(idbuf,zmq_msg_data(&part),idbufsz);
failbuf[0] = idbuf[0];
failbuf[1] = 0;
// ensure that we validate buffer is sufficient to hold result
rc = zmq_getsockopt (server, ZMQ_IDENTITY_FD, failbuf, &failsz);
assert (rc == EINVAL);
rc = zmq_getsockopt (server, ZMQ_IDENTITY_FD, idbuf, &idbufsz);
assert (rc == 0);