diff options
Diffstat (limited to 'compat.c')
| -rw-r--r-- | compat.c | 51 |
1 files changed, 39 insertions, 12 deletions
@@ -1,4 +1,4 @@ -/* $OpenBSD: compat.c,v 1.87 2015/01/19 20:20:20 markus Exp $ */ +/* $OpenBSD: compat.c,v 1.94 2015/05/26 23:23:40 dtucker Exp $ */ /* * Copyright (c) 1999, 2000, 2001, 2002 Markus Friedl. All rights reserved. * @@ -152,6 +152,7 @@ compat_datafellows(const char *version) "1.2.22*", SSH_BUG_IGNOREMSG }, { "1.3.2*", /* F-Secure */ SSH_BUG_IGNOREMSG }, + { "Cisco-1.*", SSH_BUG_DHGEX_LARGE }, { "*SSH Compatible Server*", /* Netscreen */ SSH_BUG_PASSWORDPAD }, { "*OSU_0*," @@ -165,15 +166,34 @@ compat_datafellows(const char *version) "OSU_1.5alpha3*", SSH_BUG_PASSWORDPAD }, { "*SSH_Version_Mapper*", SSH_BUG_SCANNER }, + { "PuTTY-Release-0.5*," /* 0.50-0.57, DH-GEX in >=0.52 */ + "PuTTY_Release_0.5*," /* 0.58-0.59 */ + "PuTTY_Release_0.60*," + "PuTTY_Release_0.61*," + "PuTTY_Release_0.62*," + "PuTTY_Release_0.63*," + "PuTTY_Release_0.64*", + SSH_OLD_DHGEX }, { "Probe-*", SSH_BUG_PROBE }, + { "TeraTerm SSH*," + "TTSSH/1.5.*," + "TTSSH/2.1*," + "TTSSH/2.2*," + "TTSSH/2.3*," + "TTSSH/2.4*," + "TTSSH/2.5*," + "TTSSH/2.6*," + "TTSSH/2.70*," + "TTSSH/2.71*," + "TTSSH/2.72*", SSH_BUG_HOSTKEYS }, + { "WinSCP*", SSH_OLD_DHGEX }, { NULL, 0 } }; /* process table, return first match */ for (i = 0; check[i].pat; i++) { - if (match_pattern_list(version, check[i].pat, - strlen(check[i].pat), 0) == 1) { + if (match_pattern_list(version, check[i].pat, 0) == 1) { debug("match: %s pat %s compat 0x%08x", version, check[i].pat, check[i].bugs); datafellows = check[i].bugs; /* XXX for now */ @@ -199,9 +219,11 @@ proto_spec(const char *spec) for ((p = strsep(&q, SEP)); p && *p != '\0'; (p = strsep(&q, SEP))) { switch (atoi(p)) { case 1: +#ifdef WITH_SSH1 if (ret == SSH_PROTO_UNKNOWN) ret |= SSH_PROTO_1_PREFERRED; ret |= SSH_PROTO_1; +#endif break; case 2: ret |= SSH_PROTO_2; @@ -229,7 +251,7 @@ filter_proposal(char *proposal, const char *filter) buffer_init(&b); tmp = orig_prop = xstrdup(proposal); while ((cp = strsep(&tmp, ",")) != NULL) { - if (match_pattern_list(cp, filter, strlen(cp), 0) != 1) { + if (match_pattern_list(cp, filter, 0) != 1) { if (buffer_len(&b) > 0) buffer_append(&b, ",", 1); buffer_append(&b, cp, strlen(cp)); @@ -271,15 +293,20 @@ compat_pkalg_proposal(char *pkalg_prop) } char * -compat_kex_proposal(char *kex_prop) +compat_kex_proposal(char *p) { - if (!(datafellows & SSH_BUG_CURVE25519PAD)) - return kex_prop; - debug2("%s: original KEX proposal: %s", __func__, kex_prop); - kex_prop = filter_proposal(kex_prop, "curve25519-sha256@libssh.org"); - debug2("%s: compat KEX proposal: %s", __func__, kex_prop); - if (*kex_prop == '\0') + if ((datafellows & (SSH_BUG_CURVE25519PAD|SSH_OLD_DHGEX)) == 0) + return p; + debug2("%s: original KEX proposal: %s", __func__, p); + if ((datafellows & SSH_BUG_CURVE25519PAD) != 0) + p = filter_proposal(p, "curve25519-sha256@libssh.org"); + if ((datafellows & SSH_OLD_DHGEX) != 0) { + p = filter_proposal(p, "diffie-hellman-group-exchange-sha256"); + p = filter_proposal(p, "diffie-hellman-group-exchange-sha1"); + } + debug2("%s: compat KEX proposal: %s", __func__, p); + if (*p == '\0') fatal("No supported key exchange algorithms found"); - return kex_prop; + return p; } |