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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Luke <luke.wilde@live.co.uk>
Date: Sat, 30 Apr 2022 10:58:10 +0000
Subject: [PATCH] Assume SSH 2.0 and sidestep some scanf issues
Co-Authored-By: Patrick Meyer <git@the-space.agency>
---
kex.c | 13 +++++++++++--
1 file changed, 11 insertions(+), 2 deletions(-)
diff --git a/kex.c b/kex.c
index 0bcd27d..2539cc2 100644
--- a/kex.c
+++ b/kex.c
@@ -1229,7 +1229,7 @@ kex_exchange_identification(struct ssh *ssh, int timeout_ms,
sshbuf_reset(our_version);
if (version_addendum != NULL && *version_addendum == '\0')
version_addendum = NULL;
- if ((r = sshbuf_putf(our_version, "SSH-%d.%d-%.100s%s%s\r\n",
+ if ((r = sshbuf_putf(our_version, "SSH-%d.%d-%s%s%s\r\n",
PROTOCOL_MAJOR_2, PROTOCOL_MINOR_2, SSH_VERSION,
version_addendum == NULL ? "" : " ",
version_addendum == NULL ? "" : version_addendum)) != 0) {
@@ -1257,7 +1257,7 @@ kex_exchange_identification(struct ssh *ssh, int timeout_ms,
r = SSH_ERR_ALLOC_FAIL;
goto out;
}
- debug("Local version string %.100s", our_version_string);
+ debug("Local version string %s", our_version_string);
/* Read other side's version identification. */
for (n = 0; ; n++) {
@@ -1353,6 +1353,7 @@ kex_exchange_identification(struct ssh *ssh, int timeout_ms,
goto out;
}
+#ifndef __serenity__
/*
* Check that the versions match. In future this might accept
* several versions and set appropriate flags to handle them.
@@ -1361,11 +1362,19 @@ kex_exchange_identification(struct ssh *ssh, int timeout_ms,
&remote_major, &remote_minor, remote_version) != 3) {
error("Bad remote protocol version identification: '%.100s'",
peer_version_string);
+#else
+ // Assume SSH2.0 for now
+ remote_major = 2;
+ remote_minor = 0;
+ // Don't want this executing with other paths but we still need the invalid label.
+ if (0)
+ {
invalid:
send_error(ssh, "Invalid SSH identification string.");
r = SSH_ERR_INVALID_FORMAT;
goto out;
}
+#endif
debug("Remote protocol version %d.%d, remote software version %.100s",
remote_major, remote_minor, remote_version);
compat_banner(ssh, remote_version);
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