File _service:tar_scm:openssh-6.6p1-allow-ip-opts.patch of Package openssh

File _service:tar_scm:openssh-6.6p1-allow-ip-opts.patch of Package openssh (Revision 18602ea759ac1e396a492a93966a7ae8)

Currently displaying revision 18602ea759ac1e396a492a93966a7ae8 , Show latest

diff -up openssh/sshd.c.ip-opts openssh/sshd.c
--- openssh/sshd.c.ip-opts	2016-07-25 13:58:48.998507834 +0200
+++ openssh/sshd.c	2016-07-25 14:01:28.346469878 +0200
@@ -1507,12 +1507,32 @@ check_ip_options(struct ssh *ssh)
 
 	if (getsockopt(sock_in, IPPROTO_IP, IP_OPTIONS, opts,
 	    &option_size) >= 0 && option_size != 0) {
-		text[0] = '\0';
-		for (i = 0; i < option_size; i++)
-			snprintf(text + i*3, sizeof(text) - i*3,
-			    " %2.2x", opts[i]);
-		fatal("Connection from %.100s port %d with IP opts: %.800s",
-		    ssh_remote_ipaddr(ssh), ssh_remote_port(ssh), text);
+		i = 0;
+		do {
+			switch (opts[i]) {
+				case 0:
+				case 1:
+					++i;
+					break;
+				case 130:
+				case 133:
+				case 134:
+					if (i + 1 < option_size && opts[i + 1] >= 2) {
+						i += opts[i + 1];
+						break;
+					}
+					/* FALLTHROUGH */
+				default:
+				/* Fail, fatally, if we detect either loose or strict
+			 	 * or incorrect source routing options. */
+					text[0] = '\0';
+					for (i = 0; i < option_size; i++)
+						snprintf(text + i*3, sizeof(text) - i*3,
+							" %2.2x", opts[i]);
+					fatal("Connection from %.100s port %d with IP options:%.800s",
+						ssh_remote_ipaddr(ssh), ssh_remote_port(ssh), text);
+			}
+		} while (i < option_size);
 	}
 	return;
 #endif /* IP_OPTIONS */