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Fix log-uninitialized-stack bug in rend_service_intro_established.

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Fixes bug 23490; bugfix on 0.2.7.2-alpha.

TROVE-2017-008
CVE-2017-0380
This commit is contained in:
Nick Mathewson 2017-09-18 09:25:21 -04:00
parent 26f68dfcef
commit 4a2cbea6ce
2 changed files with 7 additions and 2 deletions
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5
changes/trove-2017-008 Normal file
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@ -0,0 +1,5 @@
o Major bugfixes (security, hidden services, loggging):
- Fix a bug where we could log uninitialized stack when a certain
hidden service error occurred while SafeLogging was disabled.
Fixes bug #23490; bugfix on 0.2.7.2-alpha.
This is also tracked as TROVE-2017-008 and CVE-2017-0380.

4
src/or/rendservice.c
View File

@ -2859,6 +2859,8 @@ rend_service_intro_established(origin_circuit_t *circuit,
(unsigned)circuit->base_.n_circ_id);
goto err;
}
base32_encode(serviceid, REND_SERVICE_ID_LEN_BASE32 + 1,
circuit->rend_data->rend_pk_digest, REND_SERVICE_ID_LEN);
/* We've just successfully established a intro circuit to one of our
* introduction point, account for it. */
intro = find_intro_point(circuit);
@ -2875,8 +2877,6 @@ rend_service_intro_established(origin_circuit_t *circuit,
service->desc_is_dirty = time(NULL);
circuit_change_purpose(TO_CIRCUIT(circuit), CIRCUIT_PURPOSE_S_INTRO);
base32_encode(serviceid, REND_SERVICE_ID_LEN_BASE32 + 1,
circuit->rend_data->rend_pk_digest, REND_SERVICE_ID_LEN);
log_info(LD_REND,
"Received INTRO_ESTABLISHED cell on circuit %u for service %s",
(unsigned)circuit->base_.n_circ_id, serviceid);