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busybox: lzop: add overflow check (CVE-2014-4607)

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Backport from busybox 1_22_stable branch:

  http://git.busybox.net/busybox/commit/?h=1_22_stable&id=5698ff93233b47218a677fd7facd8cc90211d1a4

(From OE-Core rev: 680fc6e7c571f70cffa9799c21604e0719504591)

Signed-off-by: Andre McCurdy <armccurdy@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Andre McCurdy 2015-03-19 10:50:18 -07:00 committed by Richard Purdie
parent 93e3df91aa
commit 1f718df76e
2 changed files with 72 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

71
meta/recipes-core/busybox/busybox/lzop-add-overflow-check.patch Normal file
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@ -0,0 +1,71 @@
Upstream-status: Backport
http://git.busybox.net/busybox/commit/?h=1_22_stable&id=5698ff93233b47218a677fd7facd8cc90211d1a4
From 5698ff93233b47218a677fd7facd8cc90211d1a4 Mon Sep 17 00:00:00 2001
From: Denys Vlasenko <vda.linux@googlemail.com>
Date: Mon, 30 Jun 2014 10:14:34 +0200
Subject: [PATCH] lzop: add overflow check
See CVE-2014-4607
http://www.openwall.com/lists/oss-security/2014/06/26/20
function old new delta
lzo1x_decompress_safe 1010 1031 +21
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
(cherry picked from commit a9dc7c2f59dc5e92870d2d46316ea5c1f14740e3)
---
archival/libarchive/liblzo.h | 2 ++
archival/libarchive/lzo1x_d.c | 3 +++
2 files changed, 5 insertions(+)
diff --git a/archival/libarchive/liblzo.h b/archival/libarchive/liblzo.h
index 843997c..4596620 100644
--- a/archival/libarchive/liblzo.h
+++ b/archival/libarchive/liblzo.h
@@ -76,11 +76,13 @@
# define TEST_IP (ip < ip_end)
# define NEED_IP(x) \
if ((unsigned)(ip_end - ip) < (unsigned)(x)) goto input_overrun
+# define TEST_IV(x) if ((x) > (unsigned)0 - (511)) goto input_overrun
# undef TEST_OP /* don't need both of the tests here */
# define TEST_OP 1
# define NEED_OP(x) \
if ((unsigned)(op_end - op) < (unsigned)(x)) goto output_overrun
+# define TEST_OV(x) if ((x) > (unsigned)0 - (511)) goto output_overrun
#define HAVE_ANY_OP 1
diff --git a/archival/libarchive/lzo1x_d.c b/archival/libarchive/lzo1x_d.c
index 9bc1270..40b167e 100644
--- a/archival/libarchive/lzo1x_d.c
+++ b/archival/libarchive/lzo1x_d.c
@@ -92,6 +92,7 @@ int lzo1x_decompress_safe(const uint8_t* in, unsigned in_len,
ip++;
NEED_IP(1);
}
+ TEST_IV(t);
t += 15 + *ip++;
}
/* copy literals */
@@ -224,6 +225,7 @@ int lzo1x_decompress_safe(const uint8_t* in, unsigned in_len,
ip++;
NEED_IP(1);
}
+ TEST_IV(t);
t += 31 + *ip++;
}
#if defined(COPY_DICT)
@@ -265,6 +267,7 @@ int lzo1x_decompress_safe(const uint8_t* in, unsigned in_len,
ip++;
NEED_IP(1);
}
+ TEST_IV(t);
t += 7 + *ip++;
}
#if defined(COPY_DICT)
--
1.9.1

1
meta/recipes-core/busybox/busybox_1.22.1.bb
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@ -33,6 +33,7 @@ SRC_URI = "http://www.busybox.net/downloads/busybox-${PV}.tar.bz2;name=tarball \
file://recognize_connmand.patch \
file://busybox-cross-menuconfig.patch \
file://CVE-2014-9645_busybox_reject_module_names_with_slashes.patch \
file://lzop-add-overflow-check.patch \
"
SRC_URI[tarball.md5sum] = "337d1a15ab1cb1d4ed423168b1eb7d7e"