import slirp4netns-0.1-5.dev.gitc4e1bc5.module+el8.3.0+7197+26156b7d
This commit is contained in:
CentOS Sources
commit
1aa6dbf15c
1
.gitignore
vendored
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1
.gitignore
vendored
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SOURCES/slirp4netns-c4e1bc5.tar.gz
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1
.slirp4netns.metadata
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1
.slirp4netns.metadata
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c80717510d48cfe56eec27e93a4fe92182faca0b SOURCES/slirp4netns-c4e1bc5.tar.gz
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34
SOURCES/slirp4netns-CVE-2019-14378.patch
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34
SOURCES/slirp4netns-CVE-2019-14378.patch
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From 126c04acbabd7ad32c2b018fe10dfac2a3bc1210 Mon Sep 17 00:00:00 2001
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From: Samuel Thibault <samuel.thibault@ens-lyon.org>
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Date: Sun, 28 Jul 2019 19:11:24 +0200
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Subject: [PATCH] Fix heap overflow in ip_reass on big packet input
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When the first fragment does not fit in the preallocated buffer, q will
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already be pointing to the ext buffer, so we mustn't try to update it.
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Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
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---
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src/ip_input.c | 4 +++-
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1 file changed, 3 insertions(+), 1 deletion(-)
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diff -up ./slirp4netns-c4e1bc5a5e6987f3a352ca524f13320a2d483398/qemu/slirp/ip_input.c.CVE-2019-14378 ./slirp4netns-c4e1bc5a5e6987f3a352ca524f13320a2d483398/qemu/slirp/ip_input.c
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--- slirp4netns-c4e1bc5a5e6987f3a352ca524f13320a2d483398/qemu/slirp/ip_input.c.CVE-2019-14378 2019-09-27 11:04:30.215413671 +0200
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+++ slirp4netns-c4e1bc5a5e6987f3a352ca524f13320a2d483398/qemu/slirp/ip_input.c 2019-09-27 11:04:30.216413682 +0200
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@@ -333,6 +333,8 @@ insert:
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q = fp->frag_link.next;
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m = dtom(slirp, q);
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+ int was_ext = m->m_flags & M_EXT;
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+
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q = (struct ipasfrag *) q->ipf_next;
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while (q != (struct ipasfrag*)&fp->frag_link) {
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struct mbuf *t = dtom(slirp, q);
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@@ -355,7 +357,7 @@ insert:
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* the old buffer (in the mbuf), so we must point ip
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* into the new buffer.
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*/
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- if (m->m_flags & M_EXT) {
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+ if (!was_ext && m->m_flags & M_EXT) {
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int delta = (char *)q - m->m_dat;
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q = (struct ipasfrag *)(m->m_ext + delta);
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}
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123
SOURCES/slirp4netns-CVE-2020-7039.patch
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123
SOURCES/slirp4netns-CVE-2020-7039.patch
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From 2655fffed7a9e765bcb4701dd876e9dab975f289 Mon Sep 17 00:00:00 2001
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From: Samuel Thibault <samuel.thibault@ens-lyon.org>
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Date: Wed, 8 Jan 2020 00:58:48 +0100
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Subject: [PATCH] tcp_emu: Fix oob access
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The main loop only checks for one available byte, while we sometimes
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need two bytes.
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2.24.1
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From 82ebe9c370a0e2970fb5695aa19aa5214a6a1c80 Mon Sep 17 00:00:00 2001
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From: Prasad J Pandit <pjp@fedoraproject.org>
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Date: Thu, 9 Jan 2020 15:12:28 +0530
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Subject: [PATCH] slirp: use correct size while emulating commands
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While emulating services in tcp_emu(), it uses 'mbuf' size
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'm->m_size' to write commands via snprintf(3). Use M_FREEROOM(m)
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size to avoid possible OOB access.
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Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org>
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Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
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Message-Id: <20200109094228.79764-3-ppandit@redhat.com>
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2.24.1
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From ce131029d6d4a405cb7d3ac6716d03e58fb4a5d9 Mon Sep 17 00:00:00 2001
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From: Prasad J Pandit <pjp@fedoraproject.org>
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Date: Thu, 9 Jan 2020 15:12:27 +0530
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Subject: [PATCH] slirp: use correct size while emulating IRC commands
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While emulating IRC DCC commands, tcp_emu() uses 'mbuf' size
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'm->m_size' to write DCC commands via snprintf(3). This may
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lead to OOB write access, because 'bptr' points somewhere in
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the middle of 'mbuf' buffer, not at the start. Use M_FREEROOM(m)
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size to avoid OOB access.
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Reported-by: Vishnu Dev TJ <vishnudevtj@gmail.com>
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Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org>
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Reviewed-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
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Message-Id: <20200109094228.79764-2-ppandit@redhat.com>
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---
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CHANGELOG.md | 1 +
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src/tcp_subr.c | 7 +++++++
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2 files changed, 8 insertions(+)
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diff -up slirp4netns-c4e1bc5a5e6987f3a352ca524f13320a2d483398/qemu/slirp/tcp_subr.c.CVE-2020-7039 slirp4netns-c4e1bc5a5e6987f3a352ca524f13320a2d483398/qemu/slirp/tcp_subr.c
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--- slirp4netns-c4e1bc5a5e6987f3a352ca524f13320a2d483398/qemu/slirp/tcp_subr.c.CVE-2020-7039 2020-01-16 11:13:39.558653385 +0100
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+++ slirp4netns-c4e1bc5a5e6987f3a352ca524f13320a2d483398/qemu/slirp/tcp_subr.c 2020-01-16 14:23:54.027184429 +0100
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@@ -704,7 +704,7 @@ tcp_emu(struct socket *so, struct mbuf *
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n4 = (laddr & 0xff);
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m->m_len = bptr - m->m_data; /* Adjust length */
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- m->m_len += snprintf(bptr, m->m_size - m->m_len,
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+ m->m_len += snprintf(bptr, M_FREEROOM(m),
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"ORT %d,%d,%d,%d,%d,%d\r\n%s",
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n1, n2, n3, n4, n5, n6, x==7?buff:"");
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return 1;
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@@ -737,7 +737,7 @@ tcp_emu(struct socket *so, struct mbuf *
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n4 = (laddr & 0xff);
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m->m_len = bptr - m->m_data; /* Adjust length */
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- m->m_len += snprintf(bptr, m->m_size - m->m_len,
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+ m->m_len += snprintf(bptr, M_FREEROOM(m),
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"27 Entering Passive Mode (%d,%d,%d,%d,%d,%d)\r\n%s",
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n1, n2, n3, n4, n5, n6, x==7?buff:"");
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@@ -763,7 +763,7 @@ tcp_emu(struct socket *so, struct mbuf *
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if (m->m_data[m->m_len-1] == '\0' && lport != 0 &&
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(so = tcp_listen(slirp, INADDR_ANY, 0, so->so_laddr.s_addr,
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htons(lport), SS_FACCEPTONCE)) != NULL)
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- m->m_len = snprintf(m->m_data, m->m_size, "%d",
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+ m->m_len = snprintf(m->m_data, M_ROOM(m), "%d",
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ntohs(so->so_fport)) + 1;
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return 1;
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@@ -783,7 +783,7 @@ tcp_emu(struct socket *so, struct mbuf *
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return 1;
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}
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m->m_len = bptr - m->m_data; /* Adjust length */
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- m->m_len += snprintf(bptr, m->m_size,
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+ m->m_len += snprintf(bptr, M_FREEROOM(m),
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"DCC CHAT chat %lu %u%c\n",
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(unsigned long)ntohl(so->so_faddr.s_addr),
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ntohs(so->so_fport), 1);
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@@ -794,7 +794,7 @@ tcp_emu(struct socket *so, struct mbuf *
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return 1;
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}
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m->m_len = bptr - m->m_data; /* Adjust length */
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- m->m_len += snprintf(bptr, m->m_size,
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+ m->m_len += snprintf(bptr, M_FREEROOM(m),
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"DCC SEND %s %lu %u %u%c\n", buff,
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(unsigned long)ntohl(so->so_faddr.s_addr),
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ntohs(so->so_fport), n1, 1);
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@@ -805,7 +805,7 @@ tcp_emu(struct socket *so, struct mbuf *
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return 1;
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}
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m->m_len = bptr - m->m_data; /* Adjust length */
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- m->m_len += snprintf(bptr, m->m_size,
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+ m->m_len += snprintf(bptr, M_FREEROOM(m),
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"DCC MOVE %s %lu %u %u%c\n", buff,
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(unsigned long)ntohl(so->so_faddr.s_addr),
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ntohs(so->so_fport), n1, 1);
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@@ -892,6 +892,9 @@ tcp_emu(struct socket *so, struct mbuf *
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break;
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case 5:
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+ if (bptr == m->m_data + m->m_len - 1)
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+ return 1; /* We need two bytes */
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+
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/*
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* The difference between versions 1.0 and
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* 2.0 is here. For future versions of
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@@ -907,6 +910,9 @@ tcp_emu(struct socket *so, struct mbuf *
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/* This is the field containing the port
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* number that RA-player is listening to.
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*/
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+ if (bptr == m->m_data + m->m_len - 1)
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+ return 1; /* We need two bytes */
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+
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lport = (((u_char*)bptr)[0] << 8)
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+ ((u_char *)bptr)[1];
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if (lport < 6970)
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77
SPECS/slirp4netns.spec
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77
SPECS/slirp4netns.spec
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%global git0 https://github.com/rootless-containers/%{name}
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%global commit0 c4e1bc5a5e6987f3a352ca524f13320a2d483398
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%global shortcommit0 %(c=%{commit0}; echo ${c:0:7})
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Name: slirp4netns
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Version: 0.1
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Release: 5.dev.git%{shortcommit0}%{?dist}
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# no go-md2man in ix86 and ppc64
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ExcludeArch: %{ix86} ppc64
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Summary: slirp for network namespaces
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License: GPLv2
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URL: %{git0}
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Source0: %{git0}/archive/%{commit0}/%{name}-%{shortcommit0}.tar.gz
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Patch0: slirp4netns-CVE-2019-14378.patch
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Patch1: slirp4netns-CVE-2020-7039.patch
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BuildRequires: autoconf
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BuildRequires: automake
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BuildRequires: gcc
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BuildRequires: git
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BuildRequires: go-md2man
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BuildRequires: make
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%description
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User-mode networking for unprivileged network namespaces.
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%package devel
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Summary: %{summary}
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BuildArch: noarch
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%description devel
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%{summary}
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This package contains library source intended for
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building other packages which use import path with
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%{import_path} prefix.
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%prep
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%autosetup -Sgit -n %{name}-%{commit0}
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%build
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./autogen.sh
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./configure --prefix=%{_usr} --libdir=%{_libdir}
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%{__make} generate-man
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%install
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make DESTDIR=%{buildroot} install install-man
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%check
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#define license tag if not already defined
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%{!?_licensedir:%global license %doc}
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%files
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%license COPYING
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%doc README.md
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%{_bindir}/%{name}
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%{_mandir}/man1/%{name}.1.gz
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%changelog
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* Thu Jan 16 2020 Jindrich Novy <jnovy@redhat.com> - 0.1-5.dev.gitc4e1bc5
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- backport fix for CVE-2020-7039
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- Resolves: #1791578
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* Thu Nov 28 2019 Jindrich Novy <jnovy@redhat.com> - 0.1-4.dev.gitc4e1bc5
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- actually add CVE-2019-14378 patch to dist-git
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- Related: RHELPLAN-25139
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* Fri Sep 27 2019 Jindrich Novy <jnovy@redhat.com> - 0.1-3.dev.gitc4e1bc5
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- Fix CVE-2019-14378 (#1768394).
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* Fri Nov 16 2018 Frantisek Kluknavsky <fkluknav@redhat.com> - 0.1-2.dev.gitc4e1bc5
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- changed summary
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* Fri Aug 10 2018 Lokesh Mandvekar <lsm5@redhat.com> - 0.1-1.dev.gitc4e1bc5
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- First package for RHEL 8
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- import from Fedora rawhide
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- Exclude ix86 and ppc64
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