Commit 19ae9575 authored by Natanael Copa's avatar Natanael Copa

main/rpcbind: upgrade to 0.2.4

parent 787ab5d0
# Maintainer: Natanael Copa <ncopa@alpinelinux.org>
pkgname=rpcbind
pkgver=0.2.3
pkgrel=3
pkgver=0.2.4
pkgrel=0
pkgdesc="portmap replacement which supports RPC over various protocols"
url="http://rpcbind.sourceforge.net"
arch="all"
......@@ -11,11 +11,17 @@ install="$pkgname.pre-install $pkgname.pre-upgrade"
makedepends="libtirpc-dev autoconf automake bsd-compat-headers"
subpackages="$pkgname-dbg $pkgname-doc"
source="http://downloads.sourceforge.net/project/rpcbind/rpcbind/$pkgver/rpcbind-$pkgver.tar.bz2
git.patch
CVE-2017-8779.patch
pmapproc_dump-Fixed-typo-in-memory-leak-patch.patch
rpcbproc_callit_com-Stop-freeing-a-static-pointer.patch
rpcbind.initd
rpcbind.confd
"
# secfixes:
# 0.2.4-r0:
# - CVE-2017-8779
builddir="$srcdir"/rpcbind-$pkgver
prepare() {
cd "$builddir"
......@@ -52,15 +58,9 @@ package() {
install -Dm644 "$srcdir"/rpcbind.confd "$pkgdir"/etc/conf.d/rpcbind
install -D -m644 COPYING "$pkgdir"/usr/share/licenses/rpcbind/COPYING
}
md5sums="c8875246b2688a1adfbd6ad43480278d rpcbind-0.2.3.tar.bz2
04c7ba5d58d6a45671987416da4cbaa4 git.patch
4fbc48760c73976457349150779b3b8b rpcbind.initd
2517c71cdb08f133b0d50055a44c56de rpcbind.confd"
sha256sums="9897823a9d820ea011d9ea02054d5ab99469b9ca5346265fee380713c8fed27b rpcbind-0.2.3.tar.bz2
4bb0809463d4e18c81c1a1802edda1cc314e1a6890ad3a229cb0ef4723d0bf26 git.patch
ed0906acfda9f038776530ef56fcbea8627837f707682ce7311e10c7259cfb15 rpcbind.initd
55bcd47a4d0f194f09e6abb13695853459f869b54ce09ef051e55efcd8ad3903 rpcbind.confd"
sha512sums="b91cb4e0849213d344063ccf32d16c49819906b65e4d07c4aa7d3c8842bd83acb408d07aa285da902c389f3c9716f01678012b93a11863eb174a2577cd6ba1d6 rpcbind-0.2.3.tar.bz2
f797f5bd309a64955c0acdcab970ecef192f7849862e676ec361977abbb8f05ec36b839b94cf3abc71956e467ace2c2ebf5d190db2874f4249d5a7d0037a9751 git.patch
sha512sums="f3966a7284e94bdf120a9b3f0dd66efa1fe8761df2313545a031f77b7c06e27d7955d2780469943deb537d34f95c4cf3f30de523ec9fab9f571322d7224b210c rpcbind-0.2.4.tar.bz2
cc3b7d72299279f6c7e7ce0329d29a8bc0c44a9e99c241cbbe8f34eba71ca16da7e87683a66e36565422dde9a3b03be8d6e345264495c6e2070f97116da32244 CVE-2017-8779.patch
1ecce48807b276381ff3199916e0b85880b948086e7891aa35df8a10f9188641253572c330e5fee35afa69c5ce3965ebead14fbe8ef20c49a4e9047345e63c5e pmapproc_dump-Fixed-typo-in-memory-leak-patch.patch
a0125bd24a533366d7fcaed68e6671df65e3e39a4b18be2265f987602944d358666edef954f8707d24453331f7e96341739e5346bc1b233380c618b34a4014e2 rpcbproc_callit_com-Stop-freeing-a-static-pointer.patch
1cd655d86226a45fa3e927f8ac2bb580537644d2fb3684e0f4a956bf3721c95d95b8b8c1d9a2a742fb714eeba9277e0400a7493bf1bf676466d70adb2b35a88e rpcbind.initd
0641087162ebc8fb10c5cb329105261d77cad073daed3f9a6c92574177298cd8a19a87b62dde14161cc554b5e68680cfd870b5334f3cfd8d6074ec8a43f4dfe3 rpcbind.confd"
From 7ea36eeece56b59f98e469934e4c20b4da043346 Mon Sep 17 00:00:00 2001
From: Doran Moppert <dmoppert@redhat.com>
Date: Thu, 11 May 2017 11:42:54 -0400
Subject: [PATCH] rpcbind: pair all svc_getargs() calls with svc_freeargs() to
avoid memory leak
This patch is to address CVE-2017-8779 "rpcbomb" in rpcbind, discussed
at [1], [2], [3]. The last link suggests this issue is actually a bug
in rpcbind, which led me here.
The leak caused by the reproducer at [4] appears to come from
rpcb_service_4(), in the case where svc_getargs() returns false and the
function had an early return, rather than passing through the cleanup
path at done:, as would otherwise occur.
It also addresses a couple of other locations where the same fault seems
to exist, though I haven't been able to exercise those. I hope someone
more intimate with rpc(3) can confirm my understanding is correct, and
that I haven't introduced any new bugs.
Without this patch, using the reproducer (and variants) repeatedly
against rpcbind with a numBytes argument of 1_000_000_000, /proc/$(pidof
rpcbind)/status reports VmSize increase of 976564 kB each call, and
VmRSS increase of around 260 kB every 33 calls - the specific numbers
are probably an artifact of my rhel/glibc version. With the patch,
there is a small (~50 kB) VmSize increase with the first message, but
thereafter both VmSize and VmRSS remain steady.
[1]: http://seclists.org/oss-sec/2017/q2/209
[2]: https://bugzilla.redhat.com/show_bug.cgi?id=1448124
[3]: https://sourceware.org/ml/libc-alpha/2017-05/msg00129.html
[4]: https://github.com/guidovranken/rpcbomb/
Signed-off-by: Doran Moppert <dmoppert@redhat.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
---
src/pmap_svc.c | 56 +++++++++++++++++++++++++++++++++++++++++++++---------
src/rpcb_svc.c | 2 +-
src/rpcb_svc_4.c | 2 +-
src/rpcb_svc_com.c | 8 ++++++++
4 files changed, 57 insertions(+), 11 deletions(-)
diff --git a/src/pmap_svc.c b/src/pmap_svc.c
index 4c744fe..e926cdc 100644
--- a/src/pmap_svc.c
+++ b/src/pmap_svc.c
@@ -175,6 +175,7 @@ pmapproc_change(struct svc_req *rqstp /*__unused*/, SVCXPRT *xprt, unsigned long
long ans;
uid_t uid;
char uidbuf[32];
+ int rc = TRUE;
/*
* Can't use getpwnam here. We might end up calling ourselves
@@ -194,7 +195,8 @@ pmapproc_change(struct svc_req *rqstp /*__unused*/, SVCXPRT *xprt, unsigned long
if (!svc_getargs(xprt, (xdrproc_t) xdr_pmap, (char *)&reg)) {
svcerr_decode(xprt);
- return (FALSE);
+ rc = FALSE;
+ goto done;
}
#ifdef RPCBIND_DEBUG
if (debugging)
@@ -205,7 +207,8 @@ pmapproc_change(struct svc_req *rqstp /*__unused*/, SVCXPRT *xprt, unsigned long
if (!check_access(xprt, op, reg.pm_prog, PMAPVERS)) {
svcerr_weakauth(xprt);
- return (FALSE);
+ rc = (FALSE);
+ goto done;
}
rpcbreg.r_prog = reg.pm_prog;
@@ -258,7 +261,16 @@ done_change:
rpcbs_set(RPCBVERS_2_STAT, ans);
else
rpcbs_unset(RPCBVERS_2_STAT, ans);
- return (TRUE);
+done:
+ if (!svc_freeargs(xprt, (xdrproc_t) xdr_pmap, (char *)&reg)) {
+ if (debugging) {
+ (void) xlog(LOG_DEBUG, "unable to free arguments\n");
+ if (doabort) {
+ rpcbind_abort();
+ }
+ }
+ }
+ return (rc);
}
/* ARGSUSED */
@@ -272,15 +284,18 @@ pmapproc_getport(struct svc_req *rqstp /*__unused*/, SVCXPRT *xprt)
#ifdef RPCBIND_DEBUG
char *uaddr;
#endif
+ int rc = TRUE;
if (!svc_getargs(xprt, (xdrproc_t) xdr_pmap, (char *)&reg)) {
svcerr_decode(xprt);
- return (FALSE);
+ rc = FALSE;
+ goto done;
}
if (!check_access(xprt, PMAPPROC_GETPORT, reg.pm_prog, PMAPVERS)) {
svcerr_weakauth(xprt);
- return FALSE;
+ rc = FALSE;
+ goto done;
}
#ifdef RPCBIND_DEBUG
@@ -330,21 +345,34 @@ pmapproc_getport(struct svc_req *rqstp /*__unused*/, SVCXPRT *xprt)
pmap_ipprot2netid(reg.pm_prot) ?: "<unknown>",
port ? udptrans : "");
- return (TRUE);
+done:
+ if (!svc_freeargs(xprt, (xdrproc_t) xdr_pmap, (char *)&reg)) {
+ if (debugging) {
+ (void) xlog(LOG_DEBUG, "unable to free arguments\n");
+ if (doabort) {
+ rpcbind_abort();
+ }
+ }
+ }
+ return (rc);
}
/* ARGSUSED */
static bool_t
pmapproc_dump(struct svc_req *rqstp /*__unused*/, SVCXPRT *xprt)
{
+ int rc = TRUE;
+
if (!svc_getargs(xprt, (xdrproc_t)xdr_void, NULL)) {
svcerr_decode(xprt);
- return (FALSE);
+ rc = FALSE;
+ goto done;
}
if (!check_access(xprt, PMAPPROC_DUMP, 0, PMAPVERS)) {
svcerr_weakauth(xprt);
- return FALSE;
+ rc = FALSE;
+ goto done;
}
if ((!svc_sendreply(xprt, (xdrproc_t) xdr_pmaplist_ptr,
@@ -354,7 +382,17 @@ pmapproc_dump(struct svc_req *rqstp /*__unused*/, SVCXPRT *xprt)
rpcbind_abort();
}
}
- return (TRUE);
+
+done:
+ if (!svc_freeargs(xprt, (xdrproc_t) xdr_pmap, (char *)NULL)) {
+ if (debugging) {
+ (void) xlog(LOG_DEBUG, "unable to free arguments\n");
+ if (doabort) {
+ rpcbind_abort();
+ }
+ }
+ }
+ return (rc);
}
int pmap_netid2ipprot(const char *netid)
diff --git a/src/rpcb_svc.c b/src/rpcb_svc.c
index 709e3fb..091f530 100644
--- a/src/rpcb_svc.c
+++ b/src/rpcb_svc.c
@@ -166,7 +166,7 @@ rpcb_service_3(struct svc_req *rqstp, SVCXPRT *transp)
svcerr_decode(transp);
if (debugging)
(void) xlog(LOG_DEBUG, "rpcbind: could not decode");
- return;
+ goto done;
}
if (rqstp->rq_proc == RPCBPROC_SET
diff --git a/src/rpcb_svc_4.c b/src/rpcb_svc_4.c
index 5094879..eebbbbe 100644
--- a/src/rpcb_svc_4.c
+++ b/src/rpcb_svc_4.c
@@ -218,7 +218,7 @@ rpcb_service_4(struct svc_req *rqstp, SVCXPRT *transp)
svcerr_decode(transp);
if (debugging)
(void) xlog(LOG_DEBUG, "rpcbind: could not decode\n");
- return;
+ goto done;
}
if (rqstp->rq_proc == RPCBPROC_SET
diff --git a/src/rpcb_svc_com.c b/src/rpcb_svc_com.c
index 5862c26..cb63afd 100644
--- a/src/rpcb_svc_com.c
+++ b/src/rpcb_svc_com.c
@@ -927,6 +927,14 @@ error:
if (call_msg.rm_xid != 0)
(void) free_slot_by_xid(call_msg.rm_xid);
out:
+ if (!svc_freeargs(transp, (xdrproc_t) xdr_rmtcall_args, (char *) &a)) {
+ if (debugging) {
+ (void) xlog(LOG_DEBUG, "unable to free arguments\n");
+ if (doabort) {
+ rpcbind_abort();
+ }
+ }
+ }
if (local_uaddr)
free(local_uaddr);
if (buf_alloc)
--
1.8.3.1
From c49a7ea639eb700823e174fd605bbbe183e229aa Mon Sep 17 00:00:00 2001
From: Steve Dickson <steved@redhat.com>
Date: Wed, 17 May 2017 10:52:25 -0400
Subject: [PATCH] pmapproc_dump: Fixed typo in memory leak patch
commit 7ea36eee introduce a typo that caused
NIS (aka ypbind) to fail.
Signed-off-by: Steve Dickson <steved@redhat.com>
---
src/pmap_svc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/src/pmap_svc.c b/src/pmap_svc.c
index e926cdc..26c31d0 100644
--- a/src/pmap_svc.c
+++ b/src/pmap_svc.c
@@ -384,7 +384,7 @@ pmapproc_dump(struct svc_req *rqstp /*__unused*/, SVCXPRT *xprt)
}
done:
- if (!svc_freeargs(xprt, (xdrproc_t) xdr_pmap, (char *)NULL)) {
+ if (!svc_freeargs(xprt, (xdrproc_t) xdr_void, (char *)NULL)) {
if (debugging) {
(void) xlog(LOG_DEBUG, "unable to free arguments\n");
if (doabort) {
--
1.8.3.1
From 7c7590ad536c0e24bef790cb1e65702fc54db566 Mon Sep 17 00:00:00 2001
From: Steve Dickson <steved@redhat.com>
Date: Tue, 30 May 2017 11:27:22 -0400
Subject: [PATCH] rpcbproc_callit_com: Stop freeing a static pointer
commit 7ea36ee introduced a svc_freeargs() call
that ended up freeing static pointer.
It turns out the allocations for the rmt_args
is not necessary . The xdr routines (xdr_bytes) will
handle the memory management and the largest
possible message size is UDPMSGSIZE (due to UDP only)
which is smaller than RPC_BUF_MAX
Signed-off-by: Steve Dickson <steved@redhat.com>
---
src/rpcb_svc_com.c | 39 ++++++---------------------------------
1 file changed, 6 insertions(+), 33 deletions(-)
diff --git a/src/rpcb_svc_com.c b/src/rpcb_svc_com.c
index cb63afd..1fc2229 100644
--- a/src/rpcb_svc_com.c
+++ b/src/rpcb_svc_com.c
@@ -612,9 +612,9 @@ rpcbproc_callit_com(struct svc_req *rqstp, SVCXPRT *transp,
struct netconfig *nconf;
struct netbuf *caller;
struct r_rmtcall_args a;
- char *buf_alloc = NULL, *outbufp;
+ char *outbufp;
char *outbuf_alloc = NULL;
- char buf[RPC_BUF_MAX], outbuf[RPC_BUF_MAX];
+ char outbuf[RPC_BUF_MAX];
struct netbuf *na = (struct netbuf *) NULL;
struct rpc_msg call_msg;
int outlen;
@@ -635,36 +635,10 @@ rpcbproc_callit_com(struct svc_req *rqstp, SVCXPRT *transp,
}
if (si.si_socktype != SOCK_DGRAM)
return; /* Only datagram type accepted */
- sendsz = __rpc_get_t_size(si.si_af, si.si_proto, UDPMSGSIZE);
- if (sendsz == 0) { /* data transfer not supported */
- if (reply_type == RPCBPROC_INDIRECT)
- svcerr_systemerr(transp);
- return;
- }
- /*
- * Should be multiple of 4 for XDR.
- */
- sendsz = ((sendsz + 3) / 4) * 4;
- if (sendsz > RPC_BUF_MAX) {
-#ifdef notyet
- buf_alloc = alloca(sendsz); /* not in IDR2? */
-#else
- buf_alloc = malloc(sendsz);
-#endif /* notyet */
- if (buf_alloc == NULL) {
- if (debugging)
- xlog(LOG_DEBUG,
- "rpcbproc_callit_com: No Memory!\n");
- if (reply_type == RPCBPROC_INDIRECT)
- svcerr_systemerr(transp);
- return;
- }
- a.rmt_args.args = buf_alloc;
- } else {
- a.rmt_args.args = buf;
- }
+ sendsz = UDPMSGSIZE;
call_msg.rm_xid = 0; /* For error checking purposes */
+ memset(&a, 0, sizeof(a)); /* Zero out the input buffer */
if (!svc_getargs(transp, (xdrproc_t) xdr_rmtcall_args, (char *) &a)) {
if (reply_type == RPCBPROC_INDIRECT)
svcerr_decode(transp);
@@ -704,7 +678,8 @@ rpcbproc_callit_com(struct svc_req *rqstp, SVCXPRT *transp,
if (rbl == (rpcblist_ptr)NULL) {
#ifdef RPCBIND_DEBUG
if (debugging)
- xlog(LOG_DEBUG, "not found\n");
+ xlog(LOG_DEBUG, "prog %lu vers %lu: not found\n",
+ a.rmt_prog, a.rmt_vers);
#endif
if (reply_type == RPCBPROC_INDIRECT)
svcerr_noprog(transp);
@@ -937,8 +912,6 @@ out:
}
if (local_uaddr)
free(local_uaddr);
- if (buf_alloc)
- free(buf_alloc);
if (outbuf_alloc)
free(outbuf_alloc);
if (na) {
--
1.8.3.1
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