Diff

Differences From Artifact [489e633c9e]:

To Artifact [b082db57d5]:


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    imp += strcspn(imp, "-");
    if (*imp) imp++;
    imp += strcspn(imp, "-");
    if (*imp) imp++;

    ssh->remote_bugs = 0;

    if (ssh->cfg.sshbug_ignore1 == BUG_ON ||
	(ssh->cfg.sshbug_ignore1 == BUG_AUTO &&
	 (!strcmp(imp, "1.2.18") || !strcmp(imp, "1.2.19") ||
	  !strcmp(imp, "1.2.20") || !strcmp(imp, "1.2.21") ||
	  !strcmp(imp, "1.2.22") || !strcmp(imp, "Cisco-1.25")))) {
	/*
	 * These versions don't support SSH1_MSG_IGNORE, so we have
	 * to use a different defence against password length
	 * sniffing.
	 */
	ssh->remote_bugs |= BUG_CHOKES_ON_SSH1_IGNORE;
	logevent("We believe remote version has SSH1 ignore bug");
    }

    if (ssh->cfg.sshbug_plainpw1 == BUG_ON ||
	(ssh->cfg.sshbug_plainpw1 == BUG_AUTO &&
	 (!strcmp(imp, "Cisco-1.25")))) {
	/*
	 * These versions need a plain password sent; they can't
	 * handle having a null and a random length of data after
	 * the password.
	 */
	ssh->remote_bugs |= BUG_NEEDS_SSH1_PLAIN_PASSWORD;
	logevent("We believe remote version needs a plain SSH1 password");
    }

    if (ssh->cfg.sshbug_rsa1 == BUG_ON ||
	(ssh->cfg.sshbug_rsa1 == BUG_AUTO &&
	 (!strcmp(imp, "Cisco-1.25")))) {
	/*
	 * These versions apparently have no clue whatever about
	 * RSA authentication and will panic and die if they see
	 * an AUTH_RSA message.
	 */
	ssh->remote_bugs |= BUG_CHOKES_ON_RSA;
	logevent("We believe remote version can't handle RSA authentication");
    }

    if (ssh->cfg.sshbug_hmac2 == BUG_ON ||
	(ssh->cfg.sshbug_hmac2 == BUG_AUTO &&
	 (wc_match("2.1.0*", imp) || wc_match("2.0.*", imp) ||
	  wc_match("2.2.0*", imp) || wc_match("2.3.0*", imp) ||
	  wc_match("2.1 *", imp)))) {
	/*
	 * These versions have the HMAC bug.
	 */
	ssh->remote_bugs |= BUG_SSH2_HMAC;
	logevent("We believe remote version has SSH2 HMAC bug");
    }

    if (ssh->cfg.sshbug_derivekey2 == BUG_ON ||
	(ssh->cfg.sshbug_derivekey2 == BUG_AUTO &&
	 (wc_match("2.0.0*", imp) || wc_match("2.0.1[01]*", imp) ))) {
	/*
	 * These versions have the key-derivation bug (failing to
	 * include the literal shared secret in the hashes that
	 * generate the keys).
	 */
	ssh->remote_bugs |= BUG_SSH2_DERIVEKEY;
	logevent("We believe remote version has SSH2 key-derivation bug");
    }

    if (ssh->cfg.sshbug_rsapad2 == BUG_ON ||
	(ssh->cfg.sshbug_rsapad2 == BUG_AUTO &&
	 (wc_match("OpenSSH_2.[5-9]*", imp) ||
	  wc_match("OpenSSH_3.[0-2]*", imp)))) {
	/*
	 * These versions have the SSH2 RSA padding bug.
	 */
	ssh->remote_bugs |= BUG_SSH2_RSA_PADDING;
	logevent("We believe remote version has SSH2 RSA padding bug");
    }

    if (ssh->cfg.sshbug_dhgex2 == BUG_ON) {
	/*
	 * User specified the SSH2 DH GEX bug.
	 */
	ssh->remote_bugs |= BUG_SSH2_DH_GEX;
	logevent("We believe remote version has SSH2 DH group exchange bug");
    }
}







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    imp += strcspn(imp, "-");
    if (*imp) imp++;
    imp += strcspn(imp, "-");
    if (*imp) imp++;

    ssh->remote_bugs = 0;

    if (ssh->cfg.sshbug_ignore1 == FORCE_ON ||
	(ssh->cfg.sshbug_ignore1 == AUTO &&
	 (!strcmp(imp, "1.2.18") || !strcmp(imp, "1.2.19") ||
	  !strcmp(imp, "1.2.20") || !strcmp(imp, "1.2.21") ||
	  !strcmp(imp, "1.2.22") || !strcmp(imp, "Cisco-1.25")))) {
	/*
	 * These versions don't support SSH1_MSG_IGNORE, so we have
	 * to use a different defence against password length
	 * sniffing.
	 */
	ssh->remote_bugs |= BUG_CHOKES_ON_SSH1_IGNORE;
	logevent("We believe remote version has SSH1 ignore bug");
    }

    if (ssh->cfg.sshbug_plainpw1 == FORCE_ON ||
	(ssh->cfg.sshbug_plainpw1 == AUTO &&
	 (!strcmp(imp, "Cisco-1.25")))) {
	/*
	 * These versions need a plain password sent; they can't
	 * handle having a null and a random length of data after
	 * the password.
	 */
	ssh->remote_bugs |= BUG_NEEDS_SSH1_PLAIN_PASSWORD;
	logevent("We believe remote version needs a plain SSH1 password");
    }

    if (ssh->cfg.sshbug_rsa1 == FORCE_ON ||
	(ssh->cfg.sshbug_rsa1 == AUTO &&
	 (!strcmp(imp, "Cisco-1.25")))) {
	/*
	 * These versions apparently have no clue whatever about
	 * RSA authentication and will panic and die if they see
	 * an AUTH_RSA message.
	 */
	ssh->remote_bugs |= BUG_CHOKES_ON_RSA;
	logevent("We believe remote version can't handle RSA authentication");
    }

    if (ssh->cfg.sshbug_hmac2 == FORCE_ON ||
	(ssh->cfg.sshbug_hmac2 == AUTO &&
	 (wc_match("2.1.0*", imp) || wc_match("2.0.*", imp) ||
	  wc_match("2.2.0*", imp) || wc_match("2.3.0*", imp) ||
	  wc_match("2.1 *", imp)))) {
	/*
	 * These versions have the HMAC bug.
	 */
	ssh->remote_bugs |= BUG_SSH2_HMAC;
	logevent("We believe remote version has SSH2 HMAC bug");
    }

    if (ssh->cfg.sshbug_derivekey2 == FORCE_ON ||
	(ssh->cfg.sshbug_derivekey2 == AUTO &&
	 (wc_match("2.0.0*", imp) || wc_match("2.0.1[01]*", imp) ))) {
	/*
	 * These versions have the key-derivation bug (failing to
	 * include the literal shared secret in the hashes that
	 * generate the keys).
	 */
	ssh->remote_bugs |= BUG_SSH2_DERIVEKEY;
	logevent("We believe remote version has SSH2 key-derivation bug");
    }

    if (ssh->cfg.sshbug_rsapad2 == FORCE_ON ||
	(ssh->cfg.sshbug_rsapad2 == AUTO &&
	 (wc_match("OpenSSH_2.[5-9]*", imp) ||
	  wc_match("OpenSSH_3.[0-2]*", imp)))) {
	/*
	 * These versions have the SSH2 RSA padding bug.
	 */
	ssh->remote_bugs |= BUG_SSH2_RSA_PADDING;
	logevent("We believe remote version has SSH2 RSA padding bug");
    }

    if (ssh->cfg.sshbug_dhgex2 == FORCE_ON) {
	/*
	 * User specified the SSH2 DH GEX bug.
	 */
	ssh->remote_bugs |= BUG_SSH2_DH_GEX;
	logevent("We believe remote version has SSH2 DH group exchange bug");
    }
}