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Merge branch 'tor-gitlab/mr/239' into maint-0.4.5

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This commit is contained in:
David Goulet 2020-12-15 11:58:13 -05:00
commit 4a77aa6e82
2 changed files with 10 additions and 1 deletions
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4
changes/bug40190 Normal file
View File

@ -0,0 +1,4 @@
o Minor bugfixes (SOCKS5):
- Handle partial socks5 messages correctly. Previously, our code would
send an incorrect error message if it got a socks5 request that wasn't
complete. Fixes bug 40190; bugfix on 0.3.5.1-alpha.

7
src/core/proto/proto_socks.c
View File

@ -550,6 +550,7 @@ parse_socks5_client_request(const uint8_t *raw_data, socks_request_t *req,
if (parsed == -1) {
log_warn(LD_APP, "socks5: parsing failed - invalid client request");
res = SOCKS_RESULT_INVALID;
socks_request_set_socks5_error(req, SOCKS5_GENERAL_ERROR);
goto end;
} else if (parsed == -2) {
res = SOCKS_RESULT_TRUNCATED;
@ -561,6 +562,7 @@ parse_socks5_client_request(const uint8_t *raw_data, socks_request_t *req,
if (socks5_client_request_get_version(trunnel_req) != 5) {
res = SOCKS_RESULT_INVALID;
socks_request_set_socks5_error(req, SOCKS5_GENERAL_ERROR);
goto end;
}
@ -594,6 +596,7 @@ parse_socks5_client_request(const uint8_t *raw_data, socks_request_t *req,
tor_addr_to_str(req->address, &destaddr, sizeof(req->address), 1);
} break;
default: {
socks_request_set_socks5_error(req, SOCKS5_ADDRESS_TYPE_NOT_SUPPORTED);
res = -1;
} break;
}
@ -774,8 +777,10 @@ handle_socks_message(const uint8_t *raw_data, size_t datalen,
} else {
res = parse_socks5_client_request(raw_data, req,
datalen, drain_out);
if (res != SOCKS_RESULT_DONE) {
if (BUG(res == SOCKS_RESULT_INVALID && req->replylen == 0)) {
socks_request_set_socks5_error(req, SOCKS5_GENERAL_ERROR);
}
if (res != SOCKS_RESULT_DONE) {
goto end;
}