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Fix log-censoring of incoming SSH-2 session data.

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The call to ssh2_censor_packet for incoming packets in ssh2bpp was
passing the wrong starting position in the packet data - in
particular, not the same starting position as the adjacent call to
log_packet - so the censor couldn't parse SSH2_MSG_CHANNEL_DATA to
identify the string of session data that it should be bleeping out.
This commit is contained in:
Simon Tatham 2018-09-26 07:39:04 +01:00
parent 0bdda64724
commit 686e78e66b
1 changed files with 4 additions and 3 deletions
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7
ssh2bpp.c
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@ -463,13 +463,14 @@ static void ssh2_bpp_handle_input(BinaryPacketProtocol *bpp)
* SSH_MSG_UNIMPLEMENTED.
*/
s->pktin->type = SSH_MSG_NO_TYPE_CODE;
s->data += 5;
s->length = 0;
BinarySource_INIT(s->pktin, s->data + 5, 0);
} else {
s->pktin->type = s->data[5];
s->data += 6;
s->length -= 6;
BinarySource_INIT(s->pktin, s->data + 6, s->length);
}
BinarySource_INIT(s->pktin, s->data, s->length);
if (s->bpp.logctx) {
logblank_t blanks[MAX_BLANKS];
@ -479,7 +480,7 @@ static void ssh2_bpp_handle_input(BinaryPacketProtocol *bpp)
log_packet(s->bpp.logctx, PKT_INCOMING, s->pktin->type,
ssh2_pkt_type(s->bpp.pls->kctx, s->bpp.pls->actx,
s->pktin->type),
get_ptr(s->pktin), get_avail(s->pktin), nblanks, blanks,
s->data, s->length, nblanks, blanks,
&s->pktin->sequence, 0, NULL);
}