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Expand comment on BUG_SSH2_OLDGEX to make it clear why it's necessary.

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I had wondered why we couldn't just catch SSH_MSG_UNIMPLEMENTED, and
now I know: OpenSSH disconnects if the client sends
SSH_MSG_KEX_DH_GEX_REQUEST.
This commit is contained in:
Ben Harris 2015-05-11 22:44:57 +01:00
parent 830a454a42
commit 6912888c8a
1 changed files with 2 additions and 1 deletions
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3
ssh.c
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@ -2908,7 +2908,8 @@ static void ssh_detect_bugs(Ssh ssh, char *vstring)
(wc_match("OpenSSH_2.[235]*", imp)))) {
/*
* These versions only support the original (pre-RFC4419)
* SSH-2 GEX request.
* SSH-2 GEX request, and disconnect with a protocol error if
* we use the newer version.
*/
ssh->remote_bugs |= BUG_SSH2_OLDGEX;
logevent("We believe remote version has outdated SSH-2 GEX");