Родитель
e5db731693
Коммит
5026c400b3
|
@ -1,56 +0,0 @@
|
|||
From f25d254dfd4243698c31a4f3153d4ac72aa9e9bd Mon Sep 17 00:00:00 2001
|
||||
From: Samuel Sapalski <samuel.sapalski@nokia.com>
|
||||
Date: Wed, 3 Mar 2021 16:31:22 +0100
|
||||
Subject: decompress_gunzip: Fix DoS if gzip is corrupt
|
||||
|
||||
On certain corrupt gzip files, huft_build will set the error bit on
|
||||
the result pointer. If afterwards abort_unzip is called huft_free
|
||||
might run into a segmentation fault or an invalid pointer to
|
||||
free(p).
|
||||
|
||||
In order to mitigate this, we check in huft_free if the error bit
|
||||
is set and clear it before the linked list is freed.
|
||||
|
||||
Signed-off-by: Samuel Sapalski <samuel.sapalski@nokia.com>
|
||||
Signed-off-by: Peter Kaestle <peter.kaestle@nokia.com>
|
||||
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
|
||||
---
|
||||
archival/libarchive/decompress_gunzip.c | 12 ++++++++++--
|
||||
1 file changed, 10 insertions(+), 2 deletions(-)
|
||||
|
||||
diff --git a/archival/libarchive/decompress_gunzip.c b/archival/libarchive/decompress_gunzip.c
|
||||
index eb3b64930..e93cd5005 100644
|
||||
--- a/archival/libarchive/decompress_gunzip.c
|
||||
+++ b/archival/libarchive/decompress_gunzip.c
|
||||
@@ -220,10 +220,20 @@ static const uint8_t border[] ALIGN1 = {
|
||||
* each table.
|
||||
* t: table to free
|
||||
*/
|
||||
+#define BAD_HUFT(p) ((uintptr_t)(p) & 1)
|
||||
+#define ERR_RET ((huft_t*)(uintptr_t)1)
|
||||
static void huft_free(huft_t *p)
|
||||
{
|
||||
huft_t *q;
|
||||
|
||||
+ /*
|
||||
+ * If 'p' has the error bit set we have to clear it, otherwise we might run
|
||||
+ * into a segmentation fault or an invalid pointer to free(p)
|
||||
+ */
|
||||
+ if (BAD_HUFT(p)) {
|
||||
+ p = (huft_t*)((uintptr_t)(p) ^ (uintptr_t)(ERR_RET));
|
||||
+ }
|
||||
+
|
||||
/* Go through linked list, freeing from the malloced (t[-1]) address. */
|
||||
while (p) {
|
||||
q = (--p)->v.t;
|
||||
@@ -289,8 +299,6 @@ static unsigned fill_bitbuffer(STATE_PARAM unsigned bitbuffer, unsigned *current
|
||||
* or a valid pointer to a Huffman table, ORed with 0x1 if incompete table
|
||||
* is given: "fixed inflate" decoder feeds us such data.
|
||||
*/
|
||||
-#define BAD_HUFT(p) ((uintptr_t)(p) & 1)
|
||||
-#define ERR_RET ((huft_t*)(uintptr_t)1)
|
||||
static huft_t* huft_build(const unsigned *b, const unsigned n,
|
||||
const unsigned s, const struct cp_ext *cp_ext,
|
||||
unsigned *m)
|
||||
--
|
||||
cgit v1.2.1
|
|
@ -1,6 +1,6 @@
|
|||
{
|
||||
"Signatures": {
|
||||
"busybox-1.32.0.tar.bz2": "c35d87f1d04b2b153d33c275c2632e40d388a88f19a9e71727e0bbbff51fe689",
|
||||
"busybox-1.35.0.tar.bz2": "faeeb244c35a348a334f4a59e44626ee870fb07b6884d68c10ae8bc19f83a694",
|
||||
"busybox-petitboot.config": "28a4006863e0125bb564159c120067cb83b52ee0a829579cd399274cc78a10be",
|
||||
"busybox-static.config": "6f2f534548da57df8b1f5fd4dfe6ceece0f1b97bf7d0baa4c484ac9850cf8e37"
|
||||
}
|
||||
|
|
|
@ -1,7 +1,7 @@
|
|||
Summary: Statically linked binary providing simplified versions of system commands
|
||||
Name: busybox
|
||||
Version: 1.32.0
|
||||
Release: 2%{?dist}
|
||||
Version: 1.35.0
|
||||
Release: 1%{?dist}
|
||||
License: GPLv2
|
||||
Vendor: Microsoft Corporation
|
||||
Distribution: Mariner
|
||||
|
@ -10,7 +10,6 @@ Source: https://www.busybox.net/downloads/%{name}-%{version}.tar.bz2
|
|||
Source1: busybox-static.config
|
||||
Source2: busybox-petitboot.config
|
||||
Patch0: busybox-1.31.1-stime-fix.patch
|
||||
Patch1: CVE-2021-28831.patch
|
||||
BuildRequires: gcc
|
||||
BuildRequires: glibc-devel
|
||||
BuildRequires: libselinux-devel >= 1.27.7-2
|
||||
|
@ -43,7 +42,6 @@ better suited to normal use.
|
|||
%prep
|
||||
%setup -q
|
||||
%patch0 -p1 -b .stime
|
||||
%patch1 -p1
|
||||
|
||||
%build
|
||||
# create static busybox - the executable is kept as busybox-static
|
||||
|
@ -130,6 +128,9 @@ install -m 644 docs/busybox.petitboot.1 %{buildroot}/%{_mandir}/man1/busybox.pet
|
|||
%{_mandir}/man1/busybox.petitboot.1.gz
|
||||
|
||||
%changelog
|
||||
* Thu Jan 06 2022 Henry Li <lihl@microsoft.com> - 1.35.0-1
|
||||
- Upgrade to version 1.35.0
|
||||
|
||||
* Fri Mar 26 2021 Henry Beberman <henry.beberman@microsoft.com> - 1.32.0-2
|
||||
- Patch CVE-2021-28831
|
||||
|
||||
|
|
|
@ -1487,8 +1487,8 @@
|
|||
"type": "other",
|
||||
"other": {
|
||||
"name": "busybox",
|
||||
"version": "1.32.0",
|
||||
"downloadUrl": "http://www.busybox.net/downloads/busybox-1.32.0.tar.bz2"
|
||||
"version": "1.35.0",
|
||||
"downloadUrl": "http://www.busybox.net/downloads/busybox-1.35.0.tar.bz2"
|
||||
}
|
||||
}
|
||||
},
|
||||
|
|
Загрузка…
Ссылка в новой задаче