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4265215d73
allows RSA/SHA2 signatures for public key authentication but fails to advertise this correctly via SSH2_MSG_EXT_INFO. This causes clients of these server to incorrectly match PubkeyAcceptedAlgorithms and potentially refuse to offer valid keys. Reported by and based on patch from Gordon Messmer via bz3213, thanks also for additional analysis by Jakub Jelen. ok dtucker OpenBSD-Commit-ID: d6d0b7351d5d44c45f3daaa26efac65847a564f7
68 lines
2.7 KiB
C
68 lines
2.7 KiB
C
/* $OpenBSD: compat.h,v 1.57 2021/06/06 03:40:39 djm Exp $ */
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/*
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* Copyright (c) 1999, 2000, 2001 Markus Friedl. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef COMPAT_H
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#define COMPAT_H
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#define SSH_BUG_UTF8TTYMODE 0x00000001
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#define SSH_BUG_SIGTYPE 0x00000002
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#define SSH_BUG_SIGTYPE74 0x00000004
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/* #define unused 0x00000008 */
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#define SSH_OLD_SESSIONID 0x00000010
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/* #define unused 0x00000020 */
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#define SSH_BUG_DEBUG 0x00000040
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/* #define unused 0x00000080 */
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#define SSH_BUG_IGNOREMSG 0x00000100
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/* #define unused 0x00000200 */
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#define SSH_BUG_PASSWORDPAD 0x00000400
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#define SSH_BUG_SCANNER 0x00000800
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#define SSH_BUG_BIGENDIANAES 0x00001000
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#define SSH_BUG_RSASIGMD5 0x00002000
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#define SSH_OLD_DHGEX 0x00004000
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#define SSH_BUG_NOREKEY 0x00008000
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/* #define unused 0x00010000 */
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/* #define unused 0x00020000 */
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/* #define unused 0x00040000 */
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/* #define unused 0x00100000 */
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#define SSH_BUG_EXTEOF 0x00200000
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#define SSH_BUG_PROBE 0x00400000
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/* #define unused 0x00800000 */
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#define SSH_OLD_FORWARD_ADDR 0x01000000
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/* #define unused 0x02000000 */
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#define SSH_NEW_OPENSSH 0x04000000
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#define SSH_BUG_DYNAMIC_RPORT 0x08000000
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#define SSH_BUG_CURVE25519PAD 0x10000000
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#define SSH_BUG_HOSTKEYS 0x20000000
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#define SSH_BUG_DHGEX_LARGE 0x40000000
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struct ssh;
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void compat_banner(struct ssh *, const char *);
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char *compat_cipher_proposal(struct ssh *, char *);
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char *compat_pkalg_proposal(struct ssh *, char *);
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char *compat_kex_proposal(struct ssh *, char *);
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#endif
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