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7 changed files with 183 additions and 236 deletions

2
.gitignore vendored
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SOURCES/slirp4netns-c4e1bc5.tar.gz /*.tar.gz

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c80717510d48cfe56eec27e93a4fe92182faca0b SOURCES/slirp4netns-c4e1bc5.tar.gz

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From 126c04acbabd7ad32c2b018fe10dfac2a3bc1210 Mon Sep 17 00:00:00 2001
From: Samuel Thibault <samuel.thibault@ens-lyon.org>
Date: Sun, 28 Jul 2019 19:11:24 +0200
Subject: [PATCH] Fix heap overflow in ip_reass on big packet input
When the first fragment does not fit in the preallocated buffer, q will
already be pointing to the ext buffer, so we mustn't try to update it.
Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
---
src/ip_input.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff -up ./slirp4netns-c4e1bc5a5e6987f3a352ca524f13320a2d483398/qemu/slirp/ip_input.c.CVE-2019-14378 ./slirp4netns-c4e1bc5a5e6987f3a352ca524f13320a2d483398/qemu/slirp/ip_input.c
--- slirp4netns-c4e1bc5a5e6987f3a352ca524f13320a2d483398/qemu/slirp/ip_input.c.CVE-2019-14378 2019-09-27 11:04:30.215413671 +0200
+++ slirp4netns-c4e1bc5a5e6987f3a352ca524f13320a2d483398/qemu/slirp/ip_input.c 2019-09-27 11:04:30.216413682 +0200
@@ -333,6 +333,8 @@ insert:
q = fp->frag_link.next;
m = dtom(slirp, q);
+ int was_ext = m->m_flags & M_EXT;
+
q = (struct ipasfrag *) q->ipf_next;
while (q != (struct ipasfrag*)&fp->frag_link) {
struct mbuf *t = dtom(slirp, q);
@@ -355,7 +357,7 @@ insert:
* the old buffer (in the mbuf), so we must point ip
* into the new buffer.
*/
- if (m->m_flags & M_EXT) {
+ if (!was_ext && m->m_flags & M_EXT) {
int delta = (char *)q - m->m_dat;
q = (struct ipasfrag *)(m->m_ext + delta);
}

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@ -1,123 +0,0 @@
From 2655fffed7a9e765bcb4701dd876e9dab975f289 Mon Sep 17 00:00:00 2001
From: Samuel Thibault <samuel.thibault@ens-lyon.org>
Date: Wed, 8 Jan 2020 00:58:48 +0100
Subject: [PATCH] tcp_emu: Fix oob access
The main loop only checks for one available byte, while we sometimes
need two bytes.
2.24.1
From 82ebe9c370a0e2970fb5695aa19aa5214a6a1c80 Mon Sep 17 00:00:00 2001
From: Prasad J Pandit <pjp@fedoraproject.org>
Date: Thu, 9 Jan 2020 15:12:28 +0530
Subject: [PATCH] slirp: use correct size while emulating commands
While emulating services in tcp_emu(), it uses 'mbuf' size
'm->m_size' to write commands via snprintf(3). Use M_FREEROOM(m)
size to avoid possible OOB access.
Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org>
Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Message-Id: <20200109094228.79764-3-ppandit@redhat.com>
2.24.1
From ce131029d6d4a405cb7d3ac6716d03e58fb4a5d9 Mon Sep 17 00:00:00 2001
From: Prasad J Pandit <pjp@fedoraproject.org>
Date: Thu, 9 Jan 2020 15:12:27 +0530
Subject: [PATCH] slirp: use correct size while emulating IRC commands
While emulating IRC DCC commands, tcp_emu() uses 'mbuf' size
'm->m_size' to write DCC commands via snprintf(3). This may
lead to OOB write access, because 'bptr' points somewhere in
the middle of 'mbuf' buffer, not at the start. Use M_FREEROOM(m)
size to avoid OOB access.
Reported-by: Vishnu Dev TJ <vishnudevtj@gmail.com>
Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org>
Reviewed-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Message-Id: <20200109094228.79764-2-ppandit@redhat.com>
---
CHANGELOG.md | 1 +
src/tcp_subr.c | 7 +++++++
2 files changed, 8 insertions(+)
diff -up slirp4netns-c4e1bc5a5e6987f3a352ca524f13320a2d483398/qemu/slirp/tcp_subr.c.CVE-2020-7039 slirp4netns-c4e1bc5a5e6987f3a352ca524f13320a2d483398/qemu/slirp/tcp_subr.c
--- slirp4netns-c4e1bc5a5e6987f3a352ca524f13320a2d483398/qemu/slirp/tcp_subr.c.CVE-2020-7039 2020-01-16 11:13:39.558653385 +0100
+++ slirp4netns-c4e1bc5a5e6987f3a352ca524f13320a2d483398/qemu/slirp/tcp_subr.c 2020-01-16 14:23:54.027184429 +0100
@@ -704,7 +704,7 @@ tcp_emu(struct socket *so, struct mbuf *
n4 = (laddr & 0xff);
m->m_len = bptr - m->m_data; /* Adjust length */
- m->m_len += snprintf(bptr, m->m_size - m->m_len,
+ m->m_len += snprintf(bptr, M_FREEROOM(m),
"ORT %d,%d,%d,%d,%d,%d\r\n%s",
n1, n2, n3, n4, n5, n6, x==7?buff:"");
return 1;
@@ -737,7 +737,7 @@ tcp_emu(struct socket *so, struct mbuf *
n4 = (laddr & 0xff);
m->m_len = bptr - m->m_data; /* Adjust length */
- m->m_len += snprintf(bptr, m->m_size - m->m_len,
+ m->m_len += snprintf(bptr, M_FREEROOM(m),
"27 Entering Passive Mode (%d,%d,%d,%d,%d,%d)\r\n%s",
n1, n2, n3, n4, n5, n6, x==7?buff:"");
@@ -763,7 +763,7 @@ tcp_emu(struct socket *so, struct mbuf *
if (m->m_data[m->m_len-1] == '\0' && lport != 0 &&
(so = tcp_listen(slirp, INADDR_ANY, 0, so->so_laddr.s_addr,
htons(lport), SS_FACCEPTONCE)) != NULL)
- m->m_len = snprintf(m->m_data, m->m_size, "%d",
+ m->m_len = snprintf(m->m_data, M_ROOM(m), "%d",
ntohs(so->so_fport)) + 1;
return 1;
@@ -783,7 +783,7 @@ tcp_emu(struct socket *so, struct mbuf *
return 1;
}
m->m_len = bptr - m->m_data; /* Adjust length */
- m->m_len += snprintf(bptr, m->m_size,
+ m->m_len += snprintf(bptr, M_FREEROOM(m),
"DCC CHAT chat %lu %u%c\n",
(unsigned long)ntohl(so->so_faddr.s_addr),
ntohs(so->so_fport), 1);
@@ -794,7 +794,7 @@ tcp_emu(struct socket *so, struct mbuf *
return 1;
}
m->m_len = bptr - m->m_data; /* Adjust length */
- m->m_len += snprintf(bptr, m->m_size,
+ m->m_len += snprintf(bptr, M_FREEROOM(m),
"DCC SEND %s %lu %u %u%c\n", buff,
(unsigned long)ntohl(so->so_faddr.s_addr),
ntohs(so->so_fport), n1, 1);
@@ -805,7 +805,7 @@ tcp_emu(struct socket *so, struct mbuf *
return 1;
}
m->m_len = bptr - m->m_data; /* Adjust length */
- m->m_len += snprintf(bptr, m->m_size,
+ m->m_len += snprintf(bptr, M_FREEROOM(m),
"DCC MOVE %s %lu %u %u%c\n", buff,
(unsigned long)ntohl(so->so_faddr.s_addr),
ntohs(so->so_fport), n1, 1);
@@ -892,6 +892,9 @@ tcp_emu(struct socket *so, struct mbuf *
break;
case 5:
+ if (bptr == m->m_data + m->m_len - 1)
+ return 1; /* We need two bytes */
+
/*
* The difference between versions 1.0 and
* 2.0 is here. For future versions of
@@ -907,6 +910,9 @@ tcp_emu(struct socket *so, struct mbuf *
/* This is the field containing the port
* number that RA-player is listening to.
*/
+ if (bptr == m->m_data + m->m_len - 1)
+ return 1; /* We need two bytes */
+
lport = (((u_char*)bptr)[0] << 8)
+ ((u_char *)bptr)[1];
if (lport < 6970)

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%global git0 https://github.com/rootless-containers/%{name}
%global commit0 c4e1bc5a5e6987f3a352ca524f13320a2d483398
%global shortcommit0 %(c=%{commit0}; echo ${c:0:7})
Name: slirp4netns
Version: 0.1
Release: 5.dev.git%{shortcommit0}%{?dist}
# no go-md2man in ix86 and ppc64
ExcludeArch: %{ix86} ppc64
Summary: slirp for network namespaces
License: GPLv2
URL: %{git0}
Source0: %{git0}/archive/%{commit0}/%{name}-%{shortcommit0}.tar.gz
Patch0: slirp4netns-CVE-2019-14378.patch
Patch1: slirp4netns-CVE-2020-7039.patch
BuildRequires: autoconf
BuildRequires: automake
BuildRequires: gcc
BuildRequires: git
BuildRequires: go-md2man
BuildRequires: make
%description
User-mode networking for unprivileged network namespaces.
%package devel
Summary: %{summary}
BuildArch: noarch
%description devel
%{summary}
This package contains library source intended for
building other packages which use import path with
%{import_path} prefix.
%prep
%autosetup -Sgit -n %{name}-%{commit0}
%build
./autogen.sh
./configure --prefix=%{_usr} --libdir=%{_libdir}
%{__make} generate-man
%install
make DESTDIR=%{buildroot} install install-man
%check
#define license tag if not already defined
%{!?_licensedir:%global license %doc}
%files
%license COPYING
%doc README.md
%{_bindir}/%{name}
%{_mandir}/man1/%{name}.1.gz
%changelog
* Thu Jan 16 2020 Jindrich Novy <jnovy@redhat.com> - 0.1-5.dev.gitc4e1bc5
- backport fix for CVE-2020-7039
- Resolves: #1791578
* Thu Nov 28 2019 Jindrich Novy <jnovy@redhat.com> - 0.1-4.dev.gitc4e1bc5
- actually add CVE-2019-14378 patch to dist-git
- Related: RHELPLAN-25139
* Fri Sep 27 2019 Jindrich Novy <jnovy@redhat.com> - 0.1-3.dev.gitc4e1bc5
- Fix CVE-2019-14378 (#1768394).
* Fri Nov 16 2018 Frantisek Kluknavsky <fkluknav@redhat.com> - 0.1-2.dev.gitc4e1bc5
- changed summary
* Fri Aug 10 2018 Lokesh Mandvekar <lsm5@redhat.com> - 0.1-1.dev.gitc4e1bc5
- First package for RHEL 8
- import from Fedora rawhide
- Exclude ix86 and ppc64

181
slirp4netns.spec Normal file
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%global git0 https://github.com/rootless-containers/%{name}
Name: slirp4netns
Version: 1.2.3
Release: 1%{?dist}
Summary: slirp for network namespaces
License: GPLv2
URL: %{git0}
# build fails on i686 with: No matching package to install: 'go-md2man'
ExcludeArch: i686
Source0: %{git0}/archive/v%{version}.tar.gz
BuildRequires: autoconf
BuildRequires: automake
BuildRequires: gcc
BuildRequires: glib2-devel
BuildRequires: git
BuildRequires: /usr/bin/go-md2man
BuildRequires: libcap-devel
BuildRequires: libseccomp-devel
BuildRequires: make
BuildRequires: libslirp-devel
%description
slirp for network namespaces, without copying buffers across the namespaces.
%package devel
Summary: %{summary}
BuildArch: noarch
%description devel
%{summary}
This package contains library source intended for
building other packages which use import path with
%{import_path} prefix.
%prep
%autosetup -Sgit
%build
export CFLAGS="%{optflags} -D_GNU_SOURCE -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64"
export LDFLAGS="-pie -Wl,-z,relro -Wl,-z,now"
./autogen.sh
./configure --prefix=%{_usr} --libdir=%{_libdir}
%{__make} generate-man
%install
make DESTDIR=%{buildroot} install install-man
%check
#define license tag if not already defined
%{!?_licensedir:%global license %doc}
%files
%license COPYING
%doc README.md
%{_bindir}/%{name}
%{_mandir}/man1/%{name}.1.gz
%changelog
* Fri Feb 09 2024 Jindrich Novy <jnovy@redhat.com> - 1.2.3-1
- update to https://github.com/rootless-containers/slirp4netns/releases/tag/v1.2.3
- Related: Jira:RHEL-2110
* Fri Sep 15 2023 Jindrich Novy <jnovy@redhat.com> - 1.2.2-1
- update to https://github.com/rootless-containers/slirp4netns/releases/tag/v1.2.2
- Related: Jira:RHEL-2110
* Tue Aug 22 2023 Jindrich Novy <jnovy@redhat.com> - 1.2.1-1
- update to https://github.com/rootless-containers/slirp4netns/releases/tag/v1.2.1
- Related: #2176055
* Thu Mar 09 2023 Jindrich Novy <jnovy@redhat.com> - 1.2.0-3
- BuildRequires: /usr/bin/go-md2man
- Related: #2176055
* Wed May 11 2022 Jindrich Novy <jnovy@redhat.com> - 1.2.0-2
- BuildRequires: /usr/bin/go-md2man
- Related: #2061390
* Tue May 03 2022 Jindrich Novy <jnovy@redhat.com> - 1.2.0-1
- update to https://github.com/rootless-containers/slirp4netns/releases/tag/v1.2.0
- Related: #2061390
* Tue Feb 15 2022 Jindrich Novy <jnovy@redhat.com> - 1.1.8-2
- fix gating - don't use insecure functions - thanks to Marc-André Lureau
- Related: #2001445
* Fri Dec 04 2020 Jindrich Novy <jnovy@redhat.com> - 1.1.8-1
- update to
https://github.com/rootless-containers/slirp4netns/releases/tag/v1.1.8
- Related: #1883490
* Thu Dec 03 2020 Jindrich Novy <jnovy@redhat.com> - 1.1.7-2
- exclude i686 because of build failures
- Related: #1883490
* Thu Nov 26 2020 Jindrich Novy <jnovy@redhat.com> - 1.1.7-1
- update to
https://github.com/rootless-containers/slirp4netns/releases/tag/v1.1.7
- Related: #1883490
* Mon Nov 09 2020 Jindrich Novy <jnovy@redhat.com> - 1.1.6-2
- - be sure to harden the linked binary
- Related: #1883490
* Thu Nov 05 2020 Jindrich Novy <jnovy@redhat.com> - 1.1.6-1
- update to
https://github.com/rootless-containers/slirp4netns/releases/tag/v1.1.6
- Related: #1883490
* Tue Aug 11 2020 Jindrich Novy <jnovy@redhat.com> - 1.1.4-2
- use proper CFLAGS
- Related: #1821193
* Mon Jul 13 2020 Jindrich Novy <jnovy@redhat.com> - 1.1.4-1
- update to https://github.com/rootless-containers/slirp4netns/releases/tag/v1.1.4
- Related: #1821193
* Thu Jul 09 2020 Jindrich Novy <jnovy@redhat.com> - 1.1.3-1
- update to https://github.com/rootless-containers/slirp4netns/releases/tag/v1.1.3
- Related: #1821193
* Mon Jul 06 2020 Jindrich Novy <jnovy@redhat.com> - 1.1.2-1
- update to https://github.com/rootless-containers/slirp4netns/releases/tag/v1.1.2
- Related: #1821193
* Fri Jun 05 2020 Jindrich Novy <jnovy@redhat.com> - 1.1.1-1
- update to https://github.com/rootless-containers/slirp4netns/releases/tag/v1.1.1
- Related: #1821193
* Fri Jun 05 2020 Jindrich Novy <jnovy@redhat.com> - 1.1.0-1
- update to https://github.com/rootless-containers/slirp4netns/releases/tag/v1.1.0
- Related: #1821193
* Tue May 12 2020 Jindrich Novy <jnovy@redhat.com> - 1.0.1-1
- update to https://github.com/rootless-containers/slirp4netns/archive/v1.0.1.tar.gz
- Related: #1821193
* Thu Feb 06 2020 Jindrich Novy <jnovy@redhat.com> - 0.4.2-3.git21fdece
- Fix CVE-2020-8608
- Resolves: #1798979
* Thu Jan 16 2020 Jindrich Novy <jnovy@redhat.com> - 0.4.2-2.git21fdece
- Fix CVE-2020-7039.
Resolves: #1791576
* Mon Nov 25 2019 Jindrich Novy <jnovy@redhat.com> - 0.4.2-1.git21fdece
- update to latest 0.4.2, fixes bug 1763454
- Related: RHELPLAN-25139
* Thu Oct 31 2019 Jindrich Novy <jnovy@redhat.com> - 0.4.0-2
- add new BR: libseccomp-devel
- Related: #1766774
* Wed Oct 30 2019 Jindrich Novy <jnovy@redhat.com> - 0.4.0-1
- update to v.0.4.0
- sync with fedora spec
- drop applied CVE-2019-14378 patch
- Resolves: #1766774
* Thu Sep 26 2019 Jindrich Novy <jnovy@redhat.com> - 0.3.0-4
- Fix CVE-2019-14378 (#1755595).
* Fri Jun 07 2019 Lokesh Mandvekar <lsm5@redhat.com> - 0.3.0-3
- Resolves: #1683217 - BR: glib2-devel
* Fri Jun 07 2019 Lokesh Mandvekar <lsm5@redhat.com> - 0.3.0-2
- Resolves: #1683217 - bump slirp4netns to v0.3.0
* Thu Feb 28 2019 Lokesh Mandvekar <lsm5@redhat.com> - 0.3.0-1.alpha.2.git30883b5
- bump to v0.3.0-alpha.2
* Fri Nov 16 2018 Frantisek Kluknavsky <fkluknav@redhat.com> - 0.1-2.dev.gitc4e1bc5
- changed summary
* Fri Aug 10 2018 Lokesh Mandvekar <lsm5@redhat.com> - 0.1-1.dev.gitc4e1bc5
- First package for RHEL 8
- import from Fedora rawhide
- Exclude ix86 and ppc64

1
sources Normal file
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SHA512 (v1.2.3.tar.gz) = 2f3882c85c83089980880b761c806c571c22157d9c32f104f1c3d3fe8a53ef9ef485293ecd7951d1118f3d336b2fadbcc4dbc419c2f78a0b7744cdc7d9f73921