58 lines
2.5 KiB
Diff
58 lines
2.5 KiB
Diff
From 22ea582c6b74ada30bec3a6b15de3c3e52f2b4da Mon Sep 17 00:00:00 2001
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From: Robin Mills <robin@clanmills.com>
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Date: Mon, 5 Apr 2021 20:33:25 +0100
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Subject: [PATCH] fix_1522_jp2image_exif_asan
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---
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src/jp2image.cpp | 9 ++++++---
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1 file changed, 6 insertions(+), 3 deletions(-)
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diff --git a/src/jp2image.cpp b/src/jp2image.cpp
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index a81e68f..8e36276 100644
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--- a/src/jp2image.cpp
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+++ b/src/jp2image.cpp
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@@ -38,6 +38,7 @@ EXIV2_RCSID("@(#) $Id$")
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#include "image.hpp"
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#include "image_int.hpp"
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#include "basicio.hpp"
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+#include "enforce.hpp"
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#include "error.hpp"
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#include "futils.hpp"
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#include "types.hpp"
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@@ -345,7 +346,7 @@ namespace Exiv2
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if (io_->error()) throw Error(14);
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if (bufRead != rawData.size_) throw Error(20);
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- if (rawData.size_ > 0)
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+ if (rawData.size_ > 8) // "II*\0long"
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{
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// Find the position of Exif header in bytes array.
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long pos = ( (rawData.pData_[0] == rawData.pData_[1])
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@@ -484,6 +485,7 @@ namespace Exiv2
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position = io_->tell();
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box.length = getLong((byte*)&box.length, bigEndian);
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box.type = getLong((byte*)&box.type, bigEndian);
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+ enforce(box.length <= io_->size()-io_->tell() , Exiv2::kerCorruptedMetadata);
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if ( bPrint ) {
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out << Internal::stringFormat("%8ld | %8ld | ",position-sizeof(box),box.length) << toAscii(box.type) << " | " ;
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@@ -560,12 +562,13 @@ namespace Exiv2
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if (bufRead != rawData.size_) throw Error(20);
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if ( bPrint ){
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- out << Internal::binaryToString(rawData,40,0);
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+ out << Internal::binaryToString(
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+ rawData, rawData.size_>40?40:rawData.size_, 0);
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out.flush();
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}
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lf(out,bLF);
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- if(bIsExif && bRecursive && rawData.size_ > 0)
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+ if(bIsExif && bRecursive && rawData.size_ > 8) // "II*\0long"
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{
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if ( (rawData.pData_[0] == rawData.pData_[1])
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&& (rawData.pData_[0]=='I' || rawData.pData_[0]=='M' )
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--
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2.23.0
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