unzip: Security Advisory -CVE-2014-9636 and CVE-2015-1315

http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2014-9636

unzip 6.0 allows remote attackers to cause a denial of service
(out-of-bounds read or write and crash) via an extra field with
an uncompressed size smaller than the compressed field size in a
zip archive that advertises STORED method compression.

http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2015-1315

Buffer overflow in the charset_to_intern function in unix/unix.c in
Info-Zip UnZip 6.10b allows remote attackers to execute arbitrary code
via a crafted string, as demonstrated by converting a string from CP866
to UTF-8.

(From OE-Core rev: f86a178fd7036541a45bf31a46bddf634c133802)

Signed-off-by: Roy Li <rongqing.li@windriver.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 45 insertions, 0 deletions

diff --git a/meta/recipes-extended/unzip/unzip/unzip-6.0_overflow3.diff b/meta/recipes-extended/unzip/unzip/unzip-6.0_overflow3.diff
new file mode 100644
index 0000000000..0a0bfbbb17
--- /dev/null
+++ b/meta/recipes-extended/unzip/unzip/unzip-6.0_overflow3.diff
@@ -0,0 +1,45 @@
+From 190040ebfcf5395a6ccedede2cc9343d34f0a108 Mon Sep 17 00:00:00 2001
+From: mancha <mancha1 AT zoho DOT com>
+Date: Wed, 11 Feb 2015
+Subject: Info-ZIP UnZip buffer overflow
+
+Upstream-Status: Backport
+
+By carefully crafting a corrupt ZIP archive with "extra fields" that
+purport to have compressed blocks larger than the corresponding
+uncompressed blocks in STORED no-compression mode, an attacker can
+trigger a heap overflow that can result in application crash or
+possibly have other unspecified impact.
+
+This patch ensures that when extra fields use STORED mode, the
+"compressed" and uncompressed block sizes match.
+
+Signed-off-by: mancha <mancha1 AT zoho DOT com>
+---
+ extract.c |    8 ++++++++
+ 1 file changed, 8 insertions(+)
+
+--- a/extract.c
++++ b/extract.c
+@@ -2217,6 +2217,7 @@ static int test_compr_eb(__G__ eb, eb_si
+     ulg eb_ucsize;
+     uch *eb_ucptr;
+     int r;
++    ush method;
+ 
+     if (compr_offset < 4)                /* field is not compressed: */
+         return PK_OK;                    /* do nothing and signal OK */
+@@ -2226,6 +2227,13 @@ static int test_compr_eb(__G__ eb, eb_si
+          eb_size <= (compr_offset + EB_CMPRHEADLEN)))
+         return IZ_EF_TRUNC;               /* no compressed data! */
+ 
++    method = makeword(eb + (EB_HEADSIZE + compr_offset));
++    if ((method == STORED) &&
++        (eb_size - compr_offset - EB_CMPRHEADLEN != eb_ucsize))
++       return PK_ERR;                    /* compressed & uncompressed
++                                          * should match in STORED
++                                          * method */
++
+     if (
+ #ifdef INT_16BIT
+         (((ulg)(extent)eb_ucsize) != eb_ucsize) ||