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