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From 5c9f96799961818944d43b22c241cc56c215c2e4 Mon Sep 17 00:00:00 2001
From: Remi Collet <remi@php.net>
Date: Tue, 10 Jun 2014 14:13:14 +0200
Subject: [PATCH] Fixed Bug #67411 fileinfo: cdf_check_stream_offset
insufficient boundary check
Upstream:
https://github.com/file/file/commit/36fadd29849b8087af9f4586f89dbf74ea45be67
---
ext/fileinfo/libmagic/cdf.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/ext/fileinfo/libmagic/cdf.c b/ext/fileinfo/libmagic/cdf.c
index 16649f1..c9a5d50 100644
--- a/ext/fileinfo/libmagic/cdf.c
+++ b/ext/fileinfo/libmagic/cdf.c
@@ -277,13 +277,15 @@ cdf_check_stream_offset(const cdf_stream_t *sst, const cdf_header_t *h,
{
const char *b = (const char *)sst->sst_tab;
const char *e = ((const char *)p) + tail;
+ size_t ss = sst->sst_dirlen < h->h_min_size_standard_stream ?
+ CDF_SHORT_SEC_SIZE(h) : CDF_SEC_SIZE(h);
(void)&line;
- if (e >= b && (size_t)(e - b) <= CDF_SEC_SIZE(h) * sst->sst_len)
+ if (e >= b && (size_t)(e - b) <= ss * sst->sst_len)
return 0;
DPRINTF(("%d: offset begin %p < end %p || %" SIZE_T_FORMAT "u"
" > %" SIZE_T_FORMAT "u [%" SIZE_T_FORMAT "u %"
SIZE_T_FORMAT "u]\n", line, b, e, (size_t)(e - b),
- CDF_SEC_SIZE(h) * sst->sst_len, CDF_SEC_SIZE(h), sst->sst_len));
+ ss * sst->sst_len, ss, sst->sst_len));
errno = EFTYPE;
return -1;
}
--
1.9.2
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