forked from rpms/openssh
63 lines
1.7 KiB
Diff
63 lines
1.7 KiB
Diff
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diff --git a/monitor.c b/monitor.c
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index 12b33e7..a1c3c97 100644
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--- a/monitor.c
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+++ b/monitor.c
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@@ -875,6 +875,34 @@ mm_answer_bsdauthrespond(int sock, struct sshbuf *m)
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}
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#endif
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+/*
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+ * Check that the key type appears in the supplied pattern list, ignoring
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+ * mismastches in the signature algorithm. (Signature algorithm checks are
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+ * performed in the unprivileged authentication code).
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+ * Returns 1 on success, 0 otherwise.
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+ */
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+static int
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+key_base_type_match(const struct sshkey *key, const char *list)
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+{
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+ char *s, *l, *ol = xstrdup(list);
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+ int found = 0;
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+
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+ l = ol;
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+ for ((s = strsep(&l, ",")); s && *s != '\0'; (s = strsep(&l, ","))) {
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+ if (sshkey_type_from_name(s) == key->type) {
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+ found = 1;
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+ break;
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+ }
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+ }
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+ if (!found) {
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+ debug("key type %s does not appear in list %s",
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+ sshkey_ssh_name(key), list);
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+ }
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+
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+ free(ol);
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+ return found;
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+}
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+
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int
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mm_answer_keyallowed(int sock, struct sshbuf *m)
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{
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@@ -909,8 +937,8 @@ mm_answer_keyallowed(int sock, struct sshbuf *m)
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break;
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if (auth2_key_already_used(authctxt, key))
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break;
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- if (match_pattern_list(sshkey_ssh_name(key),
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- options.pubkey_key_types, 0) != 1)
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+ if (!key_base_type_match(key,
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+ options.pubkey_key_types))
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break;
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allowed = user_key_allowed(ssh, authctxt->pw, key,
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pubkey_auth_attempt, &opts);
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@@ -921,8 +949,8 @@ mm_answer_keyallowed(int sock, struct sshbuf *m)
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break;
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if (auth2_key_already_used(authctxt, key))
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break;
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- if (match_pattern_list(sshkey_ssh_name(key),
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- options.hostbased_key_types, 0) != 1)
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+ if (!key_base_type_match(key,
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+ options.hostbased_key_types))
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break;
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allowed = hostbased_key_allowed(authctxt->pw,
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cuser, chost, key);
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