36 lines
1000 B
Diff
36 lines
1000 B
Diff
From 357f26fa64fd1d9ccac2331fe174a8ee9c607adb Mon Sep 17 00:00:00 2001
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From: "Richard W.M. Jones" <rjones@redhat.com>
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Date: Thu, 30 Oct 2014 13:50:39 +0000
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Subject: [PATCH 1/2] handle: Refuse to open files < 8192 bytes in size.
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These cannot be valid hives, since they don't contain a full header
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page and at least a single page of data (in other words they couldn't
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contain a root node).
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Thanks: Mahmoud Al-Qudsi
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---
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lib/hivex.c | 7 +++++++
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1 file changed, 7 insertions(+)
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diff --git a/lib/hivex.c b/lib/hivex.c
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index 62a8644..a3cbcf7 100644
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--- a/lib/hivex.c
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+++ b/lib/hivex.c
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@@ -104,6 +104,13 @@ hivex_open (const char *filename, int flags)
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h->size = statbuf.st_size;
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+ if (h->size < 0x2000) {
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+ SET_ERRNO (EINVAL,
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+ "%s: file is too small to be a Windows NT Registry hive file",
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+ filename);
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+ goto error;
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+ }
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+
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if (!h->writable) {
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h->addr = mmap (NULL, h->size, PROT_READ, MAP_SHARED, h->fd, 0);
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if (h->addr == MAP_FAILED)
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--
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2.1.0
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