1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
|
From 25b1dc917a53787dbb2532721ca22f3f36eb13c0 Mon Sep 17 00:00:00 2001
From: Remi Collet <remi@php.net>
Date: Tue, 10 Jun 2014 14:33:37 +0200
Subject: [PATCH] Fixed Bug #67413 fileinfo: cdf_read_property_info
insufficient boundary chec
Upstream:
https://github.com/file/file/commit/93e063ee374b6a75729df9e7201fb511e47e259d
Adapted for C standard.
---
ext/fileinfo/libmagic/cdf.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/ext/fileinfo/libmagic/cdf.c b/ext/fileinfo/libmagic/cdf.c
index ee467a6..429f3b9 100644
--- a/ext/fileinfo/libmagic/cdf.c
+++ b/ext/fileinfo/libmagic/cdf.c
@@ -812,7 +812,11 @@ cdf_read_property_info(const cdf_stream_t *sst, const cdf_header_t *h,
if (cdf_check_stream_offset(sst, h, e, 0, __LINE__) == -1)
goto out;
for (i = 0; i < sh.sh_properties; i++) {
- size_t ofs = CDF_GETUINT32(p, (i << 1) + 1);
+ size_t ofs, tail = (i << 1) + 1;
+ if (cdf_check_stream_offset(sst, h, p, tail * sizeof(uint32_t),
+ __LINE__) == -1)
+ goto out;
+ ofs = CDF_GETUINT32(p, tail);
q = (const uint8_t *)(const void *)
((const char *)(const void *)p + ofs
- 2 * sizeof(uint32_t));
--
1.9.2
|
