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| author | Roger Dingledine <arma@torproject.org> | 2008-02-19 23:33:02 +0000 |
|---|---|---|
| committer | Roger Dingledine <arma@torproject.org> | 2008-02-19 23:33:02 +0000 |
| commit | 707da4f73f86edf8df6baf5b4c0759e49f817694 (patch) | |
| tree | 50db3331a236d3a16d66806c979dd2d576922bf7 /src | |
| parent | 42c4670e27fe5bdc694875cddedc5151fe8c5244 (diff) | |
| download | tor-707da4f73f86edf8df6baf5b4c0759e49f817694.tar tor-707da4f73f86edf8df6baf5b4c0759e49f817694.tar.gz | |
start checking the return value of crypto_pk_asn1_encode() while
we're trying to establish an introduction point. bug reported
by veracode.
svn:r13599
Diffstat (limited to 'src')
| -rw-r--r-- | src/or/rendservice.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/src/or/rendservice.c b/src/or/rendservice.c index 063d5ea87..21163cf0c 100644 --- a/src/or/rendservice.c +++ b/src/or/rendservice.c @@ -850,8 +850,14 @@ rend_service_intro_has_opened(origin_circuit_t *circuit) else intro_key = circuit->intro_key; /* Build the payload for a RELAY_ESTABLISH_INTRO cell. */ - len = crypto_pk_asn1_encode(intro_key, buf+2, - RELAY_PAYLOAD_SIZE-2); + r = crypto_pk_asn1_encode(intro_key, buf+2, + RELAY_PAYLOAD_SIZE-2); + if (r < 0) { + log_warn(LD_BUG, "Internal error; failed to establish intro point."); + reason = END_CIRC_REASON_INTERNAL; + goto err; + } + len = r; set_uint16(buf, htons((uint16_t)len)); len += 2; memcpy(auth, circuit->cpath->prev->handshake_digest, DIGEST_LEN); |