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openSUSE:Leap:15.3
exiv2.26596
CVE-2018-8976.patch
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File CVE-2018-8976.patch of Package exiv2.26596
diff --git a/src/jpgimage.cpp b/src/jpgimage.cpp index 9afcb58..ca83f14 100644 --- a/src/jpgimage.cpp +++ b/src/jpgimage.cpp @@ -34,6 +34,7 @@ EXIV2_RCSID("@(#) $Id$") #include "image_int.hpp" #include "error.hpp" #include "futils.hpp" +#include "enforce.hpp" #ifdef WIN32 #include <windows.h> @@ -328,12 +329,14 @@ namespace Exiv2 { int c = -1; // Skips potential padding between markers while ((c=io_->getb()) != 0xff) { - if (c == EOF) return -1; + if (c == EOF) + return -1; } // Markers can start with any number of 0xff while ((c=io_->getb()) == 0xff) { - if (c == EOF) return -2; + if (c == EOF) + return -2; } return c; } @@ -564,85 +567,88 @@ namespace Exiv2 { out << Internal::stringFormat("%8ld | 0xff%02x %-5s", \ io_->tell()-2,marker,nm[marker].c_str()) - void JpegBase::printStructure(std::ostream& out, PrintStructureOption option,int depth) + void JpegBase::printStructure(std::ostream& out, PrintStructureOption option, int depth) { - if (io_->open() != 0) throw Error(9, io_->path(), strError()); + if (io_->open() != 0) + throw Error(9, io_->path(), strError()); // Ensure that this is the correct image type if (!isThisType(*io_, false)) { - if (io_->error() || io_->eof()) throw Error(14); + if (io_->error() || io_->eof()) + throw Error(14); throw Error(15); } - bool bPrint = option==kpsBasic || option==kpsRecursive; + bool bPrint = option == kpsBasic || option == kpsRecursive; Exiv2::Uint32Vector iptcDataSegs; - if ( bPrint || option == kpsXMP || option == kpsIccProfile || option == kpsIptcErase ) { + if (bPrint || option == kpsXMP || option == kpsIccProfile || option == kpsIptcErase) { // nmonic for markers - std::string nm[256] ; - nm[0xd8]="SOI" ; - nm[0xd9]="EOI" ; - nm[0xda]="SOS" ; - nm[0xdb]="DQT" ; - nm[0xdd]="DRI" ; - nm[0xfe]="COM" ; + std::string nm[256]; + nm[0xd8] = "SOI"; + nm[0xd9] = "EOI"; + nm[0xda] = "SOS"; + nm[0xdb] = "DQT"; + nm[0xdd] = "DRI"; + nm[0xfe] = "COM"; // 0xe0 .. 0xef are APPn // 0xc0 .. 0xcf are SOFn (except 4) - nm[0xc4]="DHT" ; - for ( int i = 0 ; i <= 15 ; i++ ) { + nm[0xc4] = "DHT"; + for (int i = 0; i <= 15; i++) { char MN[10]; - sprintf(MN,"APP%d",i); - nm[0xe0+i] = MN; - if ( i != 4 ) { - sprintf(MN,"SOF%d",i); - nm[0xc0+i] = MN; + sprintf(MN, "APP%d", i); + nm[0xe0 + i] = MN; + if (i != 4) { + sprintf(MN, "SOF%d", i); + nm[0xc0 + i] = MN; } } // which markers have a length field? bool mHasLength[256]; - for ( int i = 0 ; i < 256 ; i ++ ) - mHasLength[i] - = ( i >= sof0_ && i <= sof15_) - || ( i >= app0_ && i <= (app0_ | 0x0F)) - || ( i == dht_ || i == dqt_ || i == dri_ || i == com_ || i == sos_ ) - ; + for (int i = 0; i < 256; i++) + mHasLength[i] = (i >= sof0_ && i <= sof15_) || (i >= app0_ && i <= (app0_ | 0x0F)) || + (i == dht_ || i == dqt_ || i == dri_ || i == com_ || i == sos_); // Container for the signature - bool bExtXMP = false; - long bufRead = 0; - const long bufMinSize = 36; - DataBuf buf(bufMinSize); + bool bExtXMP = false; + long bufRead = 0; + const long bufMinSize = 36; + DataBuf buf(bufMinSize); // Read section marker int marker = advanceToMarker(); - if (marker < 0) throw Error(15); + if (marker < 0) + throw Error(15); - bool done = false; - bool first= true; + bool done = false; + bool first = true; while (!done) { // print marker bytes - if ( first && bPrint ) { + if (first && bPrint) { out << "STRUCTURE OF JPEG FILE: " << io_->path() << std::endl; - out << " address | marker | length | data" << std::endl ; + out << " address | marker | length | data" << std::endl; REPORT_MARKER; } - first = false; + first = false; bool bLF = bPrint; // Read size and signature std::memset(buf.pData_, 0x0, buf.size_); bufRead = io_->read(buf.pData_, bufMinSize); - if (io_->error()) throw Error(14); - if (bufRead < 2) throw Error(15); - uint16_t size = mHasLength[marker] ? getUShort(buf.pData_, bigEndian) : 0 ; - if ( bPrint && mHasLength[marker] ) out << Internal::stringFormat(" | %7d ", size); + if (io_->error()) + throw Error(14); + if (bufRead < 2) + throw Error(15); + uint16_t size = mHasLength[marker] ? getUShort(buf.pData_, bigEndian) : 0; + if (bPrint && mHasLength[marker]) + out << Internal::stringFormat(" | %7d ", size); // print signature for APPn if (marker >= app0_ && marker <= (app0_ | 0x0F)) { // http://www.adobe.com/content/dam/Adobe/en/devnet/xmp/pdfs/XMPSpecificationPart3.pdf p75 - const char* signature = (const char*) buf.pData_+2; + const char* signature = (const char*)buf.pData_ + 2; // 728 rmills@rmillsmbp:~/gnu/exiv2/ttt $ exiv2 -pS test/data/exiv2-bug922.jpg // STRUCTURE OF JPEG FILE: test/data/exiv2-bug922.jpg @@ -651,13 +657,13 @@ namespace Exiv2 { // 2 | 0xe1 APP1 | 911 | Exif..MM.*.......%.........#.... // 915 | 0xe1 APP1 | 870 | http://ns.adobe.com/xap/1.0/.<x: // 1787 | 0xe1 APP1 | 65460 | http://ns.adobe.com/xmp/extensio - if ( option == kpsXMP && std::string(signature).find("http://ns.adobe.com/x")== 0 ) { + if (option == kpsXMP && std::string(signature).find("http://ns.adobe.com/x") == 0) { // extract XMP - if ( size > 0 ) { - io_->seek(-bufRead , BasicIo::cur); - byte* xmp = new byte[size+1]; - io_->read(xmp,size); - int start = 0 ; + if (size > 0) { + io_->seek(-bufRead, BasicIo::cur); + byte* xmp = new byte[size + 1]; + io_->read(xmp, size); + int start = 0; // http://wwwimages.adobe.com/content/dam/Adobe/en/devnet/xmp/pdfs/XMPSpecificationPart3.pdf // if we find HasExtendedXMP, set the flag and ignore this block @@ -666,79 +672,80 @@ namespace Exiv2 { // we could implement out of sequence with a dictionary of sequence/offset // and dumping the XMP in a post read operation similar to kpsIptcErase // for the moment, dumping 'on the fly' is working fine - if ( ! bExtXMP ) { - while (xmp[start]) start++; + if (!bExtXMP) { + while (xmp[start]) + start++; start++; - if ( ::strstr((char*)xmp+start,"HasExtendedXMP") ) { - start = size ; // ignore this packet, we'll get on the next time around + if (::strstr((char*)xmp + start, "HasExtendedXMP")) { + start = size; // ignore this packet, we'll get on the next time around bExtXMP = true; } } else { - start = 2+35+32+4+4; // Adobe Spec, p19 + start = 2 + 35 + 32 + 4 + 4; // Adobe Spec, p19 } - out.write((const char*)(xmp+start),size-start); - delete [] xmp; + out.write((const char*)(xmp + start), size - start); + delete[] xmp; bufRead = size; done = !bExtXMP; } - } else if ( option == kpsIccProfile && std::strcmp(signature,iccId_) == 0 ) { + } else if (option == kpsIccProfile && std::strcmp(signature, iccId_) == 0) { // extract ICCProfile - if ( size > 0 ) { - io_->seek(-bufRead, BasicIo::cur); // back to buffer (after marker) - io_->seek( 14+2, BasicIo::cur); // step over header - DataBuf icc(size-(14+2)); - io_->read( icc.pData_,icc.size_); - out.write((const char*)icc.pData_,icc.size_); + if (size > 0) { + io_->seek(-bufRead, BasicIo::cur); // back to buffer (after marker) + io_->seek(14 + 2, BasicIo::cur); // step over header + DataBuf icc(size - (14 + 2)); + io_->read(icc.pData_, icc.size_); + out.write((const char*)icc.pData_, icc.size_); #ifdef DEBUG std::cout << "iccProfile size = " << icc.size_ << std::endl; #endif bufRead = size; } - } else if ( option == kpsIptcErase && std::strcmp(signature,"Photoshop 3.0") == 0 ) { + } else if (option == kpsIptcErase && std::strcmp(signature, "Photoshop 3.0") == 0) { // delete IPTC data segment from JPEG - if ( size > 0 ) { - io_->seek(-bufRead , BasicIo::cur); + if (size > 0) { + io_->seek(-bufRead, BasicIo::cur); iptcDataSegs.push_back(io_->tell()); iptcDataSegs.push_back(size); } - } else if ( bPrint ) { - out << "| " << Internal::binaryToString(buf,size>32?32:size,size>0?2:0); - if ( std::strcmp(signature,iccId_) == 0 ) { - int chunk = (int) signature[12]; - int chunks = (int) signature[13]; - out << Internal::stringFormat(" chunk %d/%d",chunk,chunks); + } else if (bPrint) { + out << "| " << Internal::binaryToString(buf, size > 32 ? 32 : size, size > 0 ? 2 : 0); + if (std::strcmp(signature, iccId_) == 0) { + int chunk = (int)signature[12]; + int chunks = (int)signature[13]; + out << Internal::stringFormat(" chunk %d/%d", chunk, chunks); } } // for MPF: http://www.sno.phy.queensu.ca/~phil/exiftool/TagNames/MPF.html // for FLIR: http://owl.phy.queensu.ca/~phil/exiftool/TagNames/FLIR.html - bool bFlir = option == kpsRecursive && marker == (app0_+1) && std::strcmp(signature,"FLIR")==0; - bool bExif = option == kpsRecursive && marker == (app0_+1) && std::strcmp(signature,"Exif")==0; - bool bMPF = option == kpsRecursive && marker == (app0_+2) && std::strcmp(signature,"MPF")==0; - bool bPS = option == kpsRecursive && std::strcmp(signature,"Photoshop 3.0")==0; - if( bFlir || bExif || bMPF || bPS ) { + bool bFlir = option == kpsRecursive && marker == (app0_ + 1) && std::strcmp(signature, "FLIR") == 0; + bool bExif = option == kpsRecursive && marker == (app0_ + 1) && std::strcmp(signature, "Exif") == 0; + bool bMPF = option == kpsRecursive && marker == (app0_ + 2) && std::strcmp(signature, "MPF") == 0; + bool bPS = option == kpsRecursive && std::strcmp(signature, "Photoshop 3.0") == 0; + if (bFlir || bExif || bMPF || bPS) { // extract Exif data block which is tiff formatted - if ( size > 0 ) { + if (size > 0) { out << std::endl; // allocate storage and current file position - byte* exif = new byte[size]; - uint32_t restore = io_->tell(); + byte* exif = new byte[size]; + uint32_t restore = io_->tell(); // copy the data to memory - io_->seek(-bufRead , BasicIo::cur); - io_->read(exif,size); - uint32_t start = std::strcmp(signature,"Exif")==0 ? 8 : 6; - uint32_t max = (uint32_t) size -1; + io_->seek(-bufRead, BasicIo::cur); + io_->read(exif, size); + uint32_t start = std::strcmp(signature, "Exif") == 0 ? 8 : 6; + uint32_t max = (uint32_t)size - 1; // is this an fff block? - if ( bFlir ) { - start = 0 ; + if (bFlir) { + start = 0; bFlir = false; - while ( start < max ) { - if ( std::strcmp((const char*)(exif+start),"FFF")==0 ) { - bFlir = true ; + while (start < max) { + if (std::strcmp((const char*)(exif + start), "FFF") == 0) { + bFlir = true; break; } start++; @@ -747,78 +754,90 @@ namespace Exiv2 { // there is a header in FLIR, followed by a tiff block // Hunt down the tiff using brute force - if ( bFlir ) { + if (bFlir) { // FLIRFILEHEAD* pFFF = (FLIRFILEHEAD*) (exif+start) ; - while ( start < max ) { - if ( exif[start] == 'I' && exif[start+1] == 'I' ) break; - if ( exif[start] == 'M' && exif[start+1] == 'M' ) break; + while (start < max) { + if (exif[start] == 'I' && exif[start + 1] == 'I') + break; + if (exif[start] == 'M' && exif[start + 1] == 'M') + break; start++; } - if ( start < max ) std::cout << " FFF start = " << start << std::endl ; + if ( start < max ) + std::cout << " FFF start = " << start << std::endl; // << " index = " << pFFF->dwIndexOff << std::endl; } - if ( bPS ) { - IptcData::printStructure(out,exif,size,depth); + if (bPS) { + IptcData::printStructure(out, exif, size, depth); } else { // create a copy on write memio object with the data, then print the structure - BasicIo::AutoPtr p = BasicIo::AutoPtr(new MemIo(exif+start,size-start)); - if ( start < max ) printTiffStructure(*p,out,option,depth); + BasicIo::AutoPtr p = BasicIo::AutoPtr(new MemIo(exif + start, size - start)); + if (start < max) + printTiffStructure(*p, out, option, depth); } // restore and clean up - io_->seek(restore,Exiv2::BasicIo::beg); - delete [] exif; - bLF = false; + io_->seek(restore, Exiv2::BasicIo::beg); + delete[] exif; + bLF = false; } } } // print COM marker - if ( bPrint && marker == com_ ) { - int n = (size-2)>32?32:size-2; // size includes 2 for the two bytes for size! - out << "| " << Internal::binaryToString(buf,n,2); // start after the two bytes + if (bPrint && marker == com_) { + int n = (size - 2) > 32 ? 32 : size - 2; // size includes 2 for the two bytes for size! + out << "| " << Internal::binaryToString(buf, n, 2); // start after the two bytes } // Skip the segment if the size is known - if (io_->seek(size - bufRead, BasicIo::cur)) throw Error(14); + if (io_->seek(size - bufRead, BasicIo::cur)) + throw Error(14); - if ( bLF ) out << std::endl; + if (bLF) + out << std::endl; if (marker != sos_) { // Read the beginning of the next segment marker = advanceToMarker(); + enforce(marker>=0, kerNoImageInInputData); REPORT_MARKER; } done |= marker == eoi_ || marker == sos_; - if ( done && bPrint ) out << std::endl; + if (done && bPrint) + out << std::endl; } } - if ( option == kpsIptcErase && iptcDataSegs.size() ) { + if (option == kpsIptcErase && iptcDataSegs.size()) { #ifdef DEBUG std::cout << "iptc data blocks: " << iptcDataSegs.size() << std::endl; - uint32_t toggle = 0 ; - for ( Uint32Vector_i i = iptcDataSegs.begin(); i != iptcDataSegs.end() ; i++ ) { - std::cout << *i ; - if ( toggle++ % 2 ) std::cout << std::endl; else std::cout << ' ' ; + uint32_t toggle = 0; + for (Uint32Vector_i i = iptcDataSegs.begin(); i != iptcDataSegs.end(); i++) { + std::cout << *i; + if (toggle++ % 2) + std::cout << std::endl; + else + std::cout << ' '; } #endif - uint32_t count = (uint32_t) iptcDataSegs.size(); + uint32_t count = (uint32_t)iptcDataSegs.size(); // figure out which blocks to copy - uint64_t* pos = new uint64_t[count+2]; - pos[0] = 0 ; + uint64_t* pos = new uint64_t[count + 2]; + pos[0] = 0; // copy the data that is not iptc Uint32Vector_i it = iptcDataSegs.begin(); - for ( uint64_t i = 0 ; i < count ; i++ ) { - bool bOdd = (i%2)!=0; - bool bEven = !bOdd; - pos[i+1] = bEven ? *it : pos[i] + *it; + for (uint64_t i = 0; i < count; i++) { + bool bOdd = (i % 2) != 0; + bool bEven = !bOdd; + pos[i + 1] = bEven ? *it : pos[i] + *it; it++; } - pos[count+1] = io_->size() - pos[count]; + pos[count + 1] = io_->size() - pos[count]; #ifdef DEBUG - for ( uint64_t i = 0 ; i < count+2 ; i++ ) std::cout << pos[i] << " " ; + for (uint64_t i = 0; i < count + 2; i++) + std::cout << pos[i] << " "; std::cout << std::endl; #endif // $ dd bs=1 skip=$((0)) count=$((13164)) if=ETH0138028.jpg of=E1.jpg @@ -829,29 +848,30 @@ namespace Exiv2 { // binary copy io_ to a temporary file BasicIo::AutoPtr tempIo(new MemIo); - assert (tempIo.get() != 0); - for ( uint64_t i = 0 ; i < (count/2)+1 ; i++ ) { - uint64_t start = pos[2*i]+2 ; // step JPG 2 byte marker - if ( start == 2 ) start = 0 ; // read the file 2 byte SOI - long length = (long) (pos[2*i+1] - start) ; - if ( length ) { + assert(tempIo.get() != 0); + for (uint64_t i = 0; i < (count / 2) + 1; i++) { + uint64_t start = pos[2 * i] + 2; // step JPG 2 byte marker + if (start == 2) + start = 0; // read the file 2 byte SOI + long length = (long)(pos[2 * i + 1] - start); + if (length) { #ifdef DEBUG - std::cout << start <<":"<< length << std::endl; + std::cout << start << ":" << length << std::endl; #endif - io_->seek(start,BasicIo::beg); + io_->seek(start, BasicIo::beg); DataBuf buf(length); - io_->read(buf.pData_,buf.size_); - tempIo->write(buf.pData_,buf.size_); + io_->read(buf.pData_, buf.size_); + tempIo->write(buf.pData_, buf.size_); } } - delete [] pos; + delete[] pos; io_->seek(0, BasicIo::beg); - io_->transfer(*tempIo); // may throw + io_->transfer(*tempIo); // may throw io_->seek(0, BasicIo::beg); readMetadata(); } - } // JpegBase::printStructure + } // JpegBase::printStructure void JpegBase::writeMetadata() {
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