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main/rpcbind: upgrade to 1.2.5

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This commit is contained in:
Henrik Riomar 2019-03-21 23:13:18 +01:00 committed by Carlo Landmeter
parent 1996bb4083
commit bdaa9eb015
5 changed files with 76 additions and 353 deletions
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69
main/rpcbind/0001-rpcinfo-Fix-stack-buffer-overflow.patch Normal file
View File

@ -0,0 +1,69 @@
From 0bc1c0ae7ce61a7ac8a8e9a9b2086268f011abf0 Mon Sep 17 00:00:00 2001
From: Steve Dickson <steved@redhat.com>
Date: Tue, 9 Oct 2018 09:19:50 -0400
Subject: [PATCH] rpcinfo: Fix stack buffer overflow
*** buffer overflow detected ***: rpcinfo terminated
======= Backtrace: =========
/lib64/libc.so.6(+0x721af)[0x7ff24c4451af]
/lib64/libc.so.6(__fortify_fail+0x37)[0x7ff24c4ccdc7]
/lib64/libc.so.6(+0xf8050)[0x7ff24c4cb050]
rpcinfo(+0x435f)[0xef3be2635f]
rpcinfo(+0x1c62)[0xef3be23c62]
/lib64/libc.so.6(__libc_start_main+0xf5)[0x7ff24c3f36e5]
rpcinfo(+0x2739)[0xef3be24739]
======= Memory map: ========
...
The patch below fixes it.
Reviewed-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Thomas Blume <thomas.blume@suse.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
---
src/rpcinfo.c | 23 +++++++++++++++++------
1 file changed, 17 insertions(+), 6 deletions(-)
diff --git a/src/rpcinfo.c b/src/rpcinfo.c
index 9b46864..cfdba88 100644
--- a/src/rpcinfo.c
+++ b/src/rpcinfo.c
@@ -973,6 +973,7 @@ rpcbdump (dumptype, netid, argc, argv)
(" program version(s) netid(s) service owner\n");
for (rs = rs_head; rs; rs = rs->next)
{
+ size_t netidmax = sizeof(buf) - 1;
char *p = buf;
printf ("%10ld ", rs->prog);
@@ -985,12 +986,22 @@ rpcbdump (dumptype, netid, argc, argv)
}
printf ("%-10s", buf);
buf[0] = '\0';
- for (nl = rs->nlist; nl; nl = nl->next)
- {
- strcat (buf, nl->netid);
- if (nl->next)
- strcat (buf, ",");
- }
+
+ for (nl = rs->nlist; nl; nl = nl->next)
+ {
+ strncat (buf, nl->netid, netidmax);
+ if (strlen (nl->netid) < netidmax)
+ netidmax -= strlen(nl->netid);
+ else
+ break;
+
+ if (nl->next && netidmax > 1)
+ {
+ strncat (buf, ",", netidmax);
+ netidmax --;
+ }
+ }
+
printf ("%-32s", buf);
rpc = getrpcbynumber (rs->prog);
if (rpc)
--
2.21.0

17
main/rpcbind/APKBUILD
View File

@ -1,7 +1,7 @@
# Maintainer: Natanael Copa <ncopa@alpinelinux.org>
pkgname=rpcbind
pkgver=0.2.4
pkgrel=1
pkgver=1.2.5
pkgrel=0
pkgdesc="portmap replacement which supports RPC over various protocols"
url="http://rpcbind.sourceforge.net"
arch="all"
@ -10,11 +10,9 @@ license="BSD-3-Clause"
depends=
install="$pkgname.pre-install $pkgname.pre-upgrade"
makedepends="libtirpc-dev autoconf automake bsd-compat-headers"
subpackages="$pkgname-dbg $pkgname-doc"
subpackages="$pkgname-dbg $pkgname-doc $pkgname-openrc"
source="https://downloads.sourceforge.net/project/rpcbind/rpcbind/$pkgver/rpcbind-$pkgver.tar.bz2
CVE-2017-8779.patch
pmapproc_dump-Fixed-typo-in-memory-leak-patch.patch
rpcbproc_callit_com-Stop-freeing-a-static-pointer.patch
0001-rpcinfo-Fix-stack-buffer-overflow.patch
rpcbind.initd
rpcbind.confd
"
@ -39,6 +37,7 @@ build() {
--host=$CHOST \
--prefix=/usr \
--bindir=/sbin \
--sbindir=/sbin \
--enable-warmstarts \
--with-statedir=/var/lib/rpcbind \
--with-rpcuser=rpc \
@ -54,9 +53,7 @@ package() {
install -Dm644 "$srcdir"/rpcbind.confd "$pkgdir"/etc/conf.d/rpcbind
install -D -m644 COPYING "$pkgdir"/usr/share/licenses/rpcbind/COPYING
}
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
sha512sums="e884c4757950ccead0f9a07f50625a63e6f18f9bfae9fcfffa3e5fa4b7a66c3a99d9fa303061848fe8211509d5456f24ff26e4579af6e161a35522268f3ef3e4 rpcbind-1.2.5.tar.bz2
84289e99b918fd138e6327a39481e74c80581746087d2e7e55d0c0bdbe068875b6136a6296c0d24a1be01d54b38a9d446794a3d08b53e7d884804a2b375519a2 0001-rpcinfo-Fix-stack-buffer-overflow.patch
1cd655d86226a45fa3e927f8ac2bb580537644d2fb3684e0f4a956bf3721c95d95b8b8c1d9a2a742fb714eeba9277e0400a7493bf1bf676466d70adb2b35a88e rpcbind.initd
0641087162ebc8fb10c5cb329105261d77cad073daed3f9a6c92574177298cd8a19a87b62dde14161cc554b5e68680cfd870b5334f3cfd8d6074ec8a43f4dfe3 rpcbind.confd"

218
main/rpcbind/CVE-2017-8779.patch
View File

@ -1,218 +0,0 @@
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

29
main/rpcbind/pmapproc_dump-Fixed-typo-in-memory-leak-patch.patch
View File

@ -1,29 +0,0 @@
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

96
main/rpcbind/rpcbproc_callit_com-Stop-freeing-a-static-pointer.patch
View File

@ -1,96 +0,0 @@
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