@@ 1,263 0,0 @@
-Fix CVE-2017-8779:
-
-https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-8779
-
-Patch copied from the bug reporter's 3rd-party repository:
-
-https://github.com/guidovranken/rpcbomb/blob/master/libtirpc_patch.txt
-
-diff --git a/src/rpc_generic.c b/src/rpc_generic.c
-index 2f09a8f..589cbd5 100644
---- a/src/rpc_generic.c
-+++ b/src/rpc_generic.c
-@@ -615,6 +615,9 @@ __rpc_taddr2uaddr_af(int af, const struct netbuf *nbuf)
-
- switch (af) {
- case AF_INET:
-+ if (nbuf->len < sizeof(*sin)) {
-+ return NULL;
-+ }
- sin = nbuf->buf;
- if (inet_ntop(af, &sin->sin_addr, namebuf, sizeof namebuf)
- == NULL)
-@@ -626,6 +629,9 @@ __rpc_taddr2uaddr_af(int af, const struct netbuf *nbuf)
- break;
- #ifdef INET6
- case AF_INET6:
-+ if (nbuf->len < sizeof(*sin6)) {
-+ return NULL;
-+ }
- sin6 = nbuf->buf;
- if (inet_ntop(af, &sin6->sin6_addr, namebuf6, sizeof namebuf6)
- == NULL)
-@@ -667,6 +673,8 @@ __rpc_uaddr2taddr_af(int af, const char *uaddr)
-
- port = 0;
- sin = NULL;
-+ if (uaddr == NULL)
-+ return NULL;
- addrstr = strdup(uaddr);
- if (addrstr == NULL)
- return NULL;
-diff --git a/src/rpcb_prot.c b/src/rpcb_prot.c
-index 43fd385..a923c8e 100644
---- a/src/rpcb_prot.c
-+++ b/src/rpcb_prot.c
-@@ -41,6 +41,7 @@
- #include <rpc/types.h>
- #include <rpc/xdr.h>
- #include <rpc/rpcb_prot.h>
-+#include "rpc_com.h"
-
- bool_t
- xdr_rpcb(xdrs, objp)
-@@ -53,13 +54,13 @@ xdr_rpcb(xdrs, objp)
- if (!xdr_u_int32_t(xdrs, &objp->r_vers)) {
- return (FALSE);
- }
-- if (!xdr_string(xdrs, &objp->r_netid, (u_int)~0)) {
-+ if (!xdr_string(xdrs, &objp->r_netid, RPC_MAXDATASIZE)) {
- return (FALSE);
- }
-- if (!xdr_string(xdrs, &objp->r_addr, (u_int)~0)) {
-+ if (!xdr_string(xdrs, &objp->r_addr, RPC_MAXDATASIZE)) {
- return (FALSE);
- }
-- if (!xdr_string(xdrs, &objp->r_owner, (u_int)~0)) {
-+ if (!xdr_string(xdrs, &objp->r_owner, RPC_MAXDATASIZE)) {
- return (FALSE);
- }
- return (TRUE);
-@@ -159,19 +160,19 @@ xdr_rpcb_entry(xdrs, objp)
- XDR *xdrs;
- rpcb_entry *objp;
- {
-- if (!xdr_string(xdrs, &objp->r_maddr, (u_int)~0)) {
-+ if (!xdr_string(xdrs, &objp->r_maddr, RPC_MAXDATASIZE)) {
- return (FALSE);
- }
-- if (!xdr_string(xdrs, &objp->r_nc_netid, (u_int)~0)) {
-+ if (!xdr_string(xdrs, &objp->r_nc_netid, RPC_MAXDATASIZE)) {
- return (FALSE);
- }
- if (!xdr_u_int32_t(xdrs, &objp->r_nc_semantics)) {
- return (FALSE);
- }
-- if (!xdr_string(xdrs, &objp->r_nc_protofmly, (u_int)~0)) {
-+ if (!xdr_string(xdrs, &objp->r_nc_protofmly, RPC_MAXDATASIZE)) {
- return (FALSE);
- }
-- if (!xdr_string(xdrs, &objp->r_nc_proto, (u_int)~0)) {
-+ if (!xdr_string(xdrs, &objp->r_nc_proto, RPC_MAXDATASIZE)) {
- return (FALSE);
- }
- return (TRUE);
-@@ -292,7 +293,7 @@ xdr_rpcb_rmtcallres(xdrs, p)
- bool_t dummy;
- struct r_rpcb_rmtcallres *objp = (struct r_rpcb_rmtcallres *)(void *)p;
-
-- if (!xdr_string(xdrs, &objp->addr, (u_int)~0)) {
-+ if (!xdr_string(xdrs, &objp->addr, RPC_MAXDATASIZE)) {
- return (FALSE);
- }
- if (!xdr_u_int(xdrs, &objp->results.results_len)) {
-@@ -312,6 +313,11 @@ xdr_netbuf(xdrs, objp)
- if (!xdr_u_int32_t(xdrs, (u_int32_t *) &objp->maxlen)) {
- return (FALSE);
- }
-+
-+ if (objp->maxlen > RPC_MAXDATASIZE) {
-+ return (FALSE);
-+ }
-+
- dummy = xdr_bytes(xdrs, (char **)&(objp->buf),
- (u_int *)&(objp->len), objp->maxlen);
- return (dummy);
-diff --git a/src/rpcb_st_xdr.c b/src/rpcb_st_xdr.c
-index 08db745..28e6a48 100644
---- a/src/rpcb_st_xdr.c
-+++ b/src/rpcb_st_xdr.c
-@@ -37,6 +37,7 @@
-
-
- #include <rpc/rpc.h>
-+#include "rpc_com.h"
-
- /* Link list of all the stats about getport and getaddr */
-
-@@ -58,7 +59,7 @@ xdr_rpcbs_addrlist(xdrs, objp)
- if (!xdr_int(xdrs, &objp->failure)) {
- return (FALSE);
- }
-- if (!xdr_string(xdrs, &objp->netid, (u_int)~0)) {
-+ if (!xdr_string(xdrs, &objp->netid, RPC_MAXDATASIZE)) {
- return (FALSE);
- }
-
-@@ -109,7 +110,7 @@ xdr_rpcbs_rmtcalllist(xdrs, objp)
- IXDR_PUT_INT32(buf, objp->failure);
- IXDR_PUT_INT32(buf, objp->indirect);
- }
-- if (!xdr_string(xdrs, &objp->netid, (u_int)~0)) {
-+ if (!xdr_string(xdrs, &objp->netid, RPC_MAXDATASIZE)) {
- return (FALSE);
- }
- if (!xdr_pointer(xdrs, (char **)&objp->next,
-@@ -147,7 +148,7 @@ xdr_rpcbs_rmtcalllist(xdrs, objp)
- objp->failure = (int)IXDR_GET_INT32(buf);
- objp->indirect = (int)IXDR_GET_INT32(buf);
- }
-- if (!xdr_string(xdrs, &objp->netid, (u_int)~0)) {
-+ if (!xdr_string(xdrs, &objp->netid, RPC_MAXDATASIZE)) {
- return (FALSE);
- }
- if (!xdr_pointer(xdrs, (char **)&objp->next,
-@@ -175,7 +176,7 @@ xdr_rpcbs_rmtcalllist(xdrs, objp)
- if (!xdr_int(xdrs, &objp->indirect)) {
- return (FALSE);
- }
-- if (!xdr_string(xdrs, &objp->netid, (u_int)~0)) {
-+ if (!xdr_string(xdrs, &objp->netid, RPC_MAXDATASIZE)) {
- return (FALSE);
- }
- if (!xdr_pointer(xdrs, (char **)&objp->next,
-diff --git a/src/xdr.c b/src/xdr.c
-index f3fb9ad..b9a1558 100644
---- a/src/xdr.c
-+++ b/src/xdr.c
-@@ -42,8 +42,10 @@
- #include <stdlib.h>
- #include <string.h>
-
-+#include <rpc/rpc.h>
- #include <rpc/types.h>
- #include <rpc/xdr.h>
-+#include <rpc/rpc_com.h>
-
- typedef quad_t longlong_t; /* ANSI long long type */
- typedef u_quad_t u_longlong_t; /* ANSI unsigned long long type */
-@@ -53,7 +55,6 @@ typedef u_quad_t u_longlong_t; /* ANSI unsigned long long type */
- */
- #define XDR_FALSE ((long) 0)
- #define XDR_TRUE ((long) 1)
--#define LASTUNSIGNED ((u_int) 0-1)
-
- /*
- * for unit alignment
-@@ -629,6 +630,7 @@ xdr_bytes(xdrs, cpp, sizep, maxsize)
- {
- char *sp = *cpp; /* sp is the actual string pointer */
- u_int nodesize;
-+ bool_t ret, allocated = FALSE;
-
- /*
- * first deal with the length since xdr bytes are counted
-@@ -652,6 +654,7 @@ xdr_bytes(xdrs, cpp, sizep, maxsize)
- }
- if (sp == NULL) {
- *cpp = sp = mem_alloc(nodesize);
-+ allocated = TRUE;
- }
- if (sp == NULL) {
- warnx("xdr_bytes: out of memory");
-@@ -660,7 +663,14 @@ xdr_bytes(xdrs, cpp, sizep, maxsize)
- /* FALLTHROUGH */
-
- case XDR_ENCODE:
-- return (xdr_opaque(xdrs, sp, nodesize));
-+ ret = xdr_opaque(xdrs, sp, nodesize);
-+ if ((xdrs->x_op == XDR_DECODE) && (ret == FALSE)) {
-+ if (allocated == TRUE) {
-+ free(sp);
-+ *cpp = NULL;
-+ }
-+ }
-+ return (ret);
-
- case XDR_FREE:
- if (sp != NULL) {
-@@ -754,6 +764,7 @@ xdr_string(xdrs, cpp, maxsize)
- char *sp = *cpp; /* sp is the actual string pointer */
- u_int size;
- u_int nodesize;
-+ bool_t ret, allocated = FALSE;
-
- /*
- * first deal with the length since xdr strings are counted-strings
-@@ -793,8 +804,10 @@ xdr_string(xdrs, cpp, maxsize)
- switch (xdrs->x_op) {
-
- case XDR_DECODE:
-- if (sp == NULL)
-+ if (sp == NULL) {
- *cpp = sp = mem_alloc(nodesize);
-+ allocated = TRUE;
-+ }
- if (sp == NULL) {
- warnx("xdr_string: out of memory");
- return (FALSE);
-@@ -803,7 +816,14 @@ xdr_string(xdrs, cpp, maxsize)
- /* FALLTHROUGH */
-
- case XDR_ENCODE:
-- return (xdr_opaque(xdrs, sp, size));
-+ ret = xdr_opaque(xdrs, sp, size);
-+ if ((xdrs->x_op == XDR_DECODE) && (ret == FALSE)) {
-+ if (allocated == TRUE) {
-+ free(sp);
-+ *cpp = NULL;
-+ }
-+ }
-+ return (ret);
-
- case XDR_FREE:
- mem_free(sp, nodesize);
-@@ -823,7 +843,7 @@ xdr_wrapstring(xdrs, cpp)
- XDR *xdrs;
- char **cpp;
- {
-- return xdr_string(xdrs, cpp, LASTUNSIGNED);
-+ return xdr_string(xdrs, cpp, RPC_MAXDATASIZE);
- }
-
- /*