New v4.3.0 release

This commit is contained in:
Marc-André Lureau 2020-04-23 14:22:21 +02:00
parent 8496ac1f98
commit 3640652443
4 changed files with 10 additions and 55 deletions

2
.gitignore vendored
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@ -1,3 +1,5 @@
/libslirp-v4.0.0.tar.gz
/libslirp-v4.1.0.tar.gz
/libslirp-v4.2.0.tar.gz
/libslirp-v4.3.0.tar.gz
/libslirp-4.3.0.tar.xz

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@ -1,48 +0,0 @@
From 9bd6c5913271eabcb7768a58197ed3301fe19f2d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= <marcandre.lureau@redhat.com>
Date: Sat, 4 Apr 2020 22:42:13 +0200
Subject: [PATCH] Fix use-afte-free in ip_reass() (CVE-2020-1983)
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
The q pointer is updated when the mbuf data is moved from m_dat to
m_ext.
m_ext buffer may also be realloc()'ed and moved during m_cat():
q should also be updated in this case.
Reported-by: Aviv Sasson <asasson@paloaltonetworks.com>
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
---
src/ip_input.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/src/ip_input.c b/src/ip_input.c
index aa514ae..89a01d4 100644
--- a/src/ip_input.c
+++ b/src/ip_input.c
@@ -327,8 +327,7 @@ insert:
*/
q = fp->frag_link.next;
m = dtom(slirp, q);
-
- int was_ext = m->m_flags & M_EXT;
+ int delta = (char *)q - (m->m_flags & M_EXT ? m->m_ext : m->m_dat);
q = (struct ipasfrag *)q->ipf_next;
while (q != (struct ipasfrag *)&fp->frag_link) {
@@ -351,8 +350,7 @@ insert:
* then an m_ext buffer was alloced. But fp->ipq_next points to the old
* buffer (in the mbuf), so we must point ip into the new buffer.
*/
- if (!was_ext && m->m_flags & M_EXT) {
- int delta = (char *)q - m->m_dat;
+ if (m->m_flags & M_EXT) {
q = (struct ipasfrag *)(m->m_ext + delta);
}
--
2.26.0.106.g9fadedd637

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@ -1,14 +1,12 @@
Name: libslirp
Version: 4.2.0
Release: 2%{?dist}
Version: 4.3.0
Release: 1%{?dist}
Summary: A general purpose TCP-IP emulator
# check the SPDX tags in source files for details
License: BSD and MIT
URL: https://gitlab.freedesktop.org/slirp/%{name}
Source0: %{url}/-/archive/v%{version}/%{name}-v%{version}.tar.gz
Patch0001: 0001-Fix-use-afte-free-in-ip_reass-CVE-2020-1983.patch
Source0: %{url}/-/archive/v%{version}/%{name}-%{version}.tar.xz
BuildRequires: git-core
BuildRequires: meson
@ -30,7 +28,7 @@ developing applications that use %{name}.
%prep
%autosetup -S git_am -n %{name}-v%{version}
%autosetup -S git_am
%build
%meson
@ -54,6 +52,9 @@ developing applications that use %{name}.
%changelog
* Thu Apr 23 2020 Marc-André Lureau <marcandre.lureau@redhat.com> - 4.3.0-1
- New v4.3.0 release
* Mon Apr 20 2020 Marc-André Lureau <marcandre.lureau@redhat.com> - 4.2.0-2
- CVE-2020-1983 fix

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@ -1 +1 @@
SHA512 (libslirp-v4.2.0.tar.gz) = 514744ac8325857915b9946a76f4a55d48c8361b6167cd69c533086928ae06f059d923c5f057e92a0915921bb363b69d34a939a0bcc28233515125a5d1858d25
SHA512 (libslirp-4.3.0.tar.xz) = 656a57878354b893503af69dfb11ab93dcf4728cc68bd0b6aa352073cbcf1b558924a5932e1996011002f72f5bddfb22ddaffc5a88078a61862c630d908e8beb