An integer underflow, leading to heap-based out-of-bound read, was found in the way Exiv2 library prints IPTC Photo Metadata embedded in an image. By persuading a victim to open a crafted image, a remote attacker could crash the application or possibly retrieve a portion of memory.The tEXtToDataBuf function in pngimage.cpp in Exiv2 through 0.26 allows remote attackers to cause a denial of service or possibly have unspecified other impact via a crafted file.In types.cpp in Exiv2 0.26, a large size value may lead to a SIGABRT during an attempt at memory allocation for an Exiv2::Internal::PngChunk::zlibUncompress call.An issue was discovered in Exiv2 0.26. readMetadata in jp2image.cpp allows remote attackers to cause a denial of service by triggering an incorrect Safe::add call.In Exiv2 0.26, the Exiv2::PngImage::printStructure function in pngimage.cpp allows remote attackers to cause an information leak via a crafted file.Exiv2 0.26 has integer overflows in LoaderTiff::getData in preview.cpp, leading to an out-of-bounds read in Exiv2::ValueType::setDataArea in value.hpp.Exiv2 0.26 has an integer overflow in the LoaderExifJpeg class in preview.cpp, leading to an out-of-bounds read in Exiv2::MemIo::read in basicio.cpp.Exiv2 0.26 has a heap-based buffer over-read in WebPImage::decodeChunks in webpimage.cpp.An issue was discovered in Exiv2 v0.26. The function Exiv2::DataValue::copy in value.cpp has a NULL pointer dereference.CiffDirectory::readDirectory at crwimage_int.cpp in Exiv2 0.26 has excessive stack consumption due to a recursive function, leading to Denial of service.There is an infinite loop in the Exiv2::Image::printIFDStructure function of image.cpp in Exiv2 0.27-RC1. A crafted input will lead to a remote denial of service attack.In Exiv2 0.26, Exiv2::IptcParser::decode in iptc.cpp may suffer from a denial of service caused by an integer overflow via a crafted PSD image file.In Exiv2 0.26, Exiv2::PsdImage::readMetadata in psdimage.cpp in the PSD image reader may suffer from a denial of service caused by an integer overflow via a crafted PSD image file.In Exiv2 0.26 and previous versions, PngChunk::readRawProfile in pngchunk_int.cpp may cause a denial of service via a crafted PNG file.Exiv2::isoSpeed in easyaccess.cpp in Exiv2 v0.27-RC2 allows remote attackers to cause a denial of service via a crafted file.There is a heap-based buffer over-read in the Exiv2::tEXtToDataBuf function of pngimage.cpp in Exiv2 0.27-RC3. A crafted input will lead to a remote denial of service attack.There is a SEGV in Exiv2::Internal::TiffParserWorker::findPrimaryGroups of tiffimage_int.cpp in Exiv2 0.27-RC3. A crafted input will lead to a remote denial of service attack.There is a heap-based buffer over-read in Exiv2::Jp2Image::encodeJp2Header of jp2image.cpp in Exiv2 0.27-RC3. A crafted input will lead to a remote denial of service attack.There is an infinite loop in Exiv2::Jp2Image::encodeJp2Header of jp2image.cpp in Exiv2 0.27-RC3. A crafted input will lead to a remote denial of service attack.In Exiv2 0.26, jpgimage.cpp allows remote attackers to cause a denial of service via a crafted file.In Exiv2 0.26, the Exiv2::Internal::printCsLensFFFF function in canonmn_int.cpp allows remote attackers to cause a denial of service via a crafted file.An out-of-bounds read vulnerability has been discovered in IptcData::printStructure in iptc.cpp file of Exiv2 0.26. An attacker could cause a crash or an information leak by providing a crafted image.