An uninitialized pointer variable on stack may lead to arbitrary heap buffer write when reading crafted JPEG images.

An uninitialized pointer variable on stack may lead to arbitrary heap buffer write when reading crafted JPEG images.

A vulnerability, which was classified as problematic, has been found in OpenCV wechatqrcode Module up to 4.7.0. Affected by this issue is the function DecodedBitStreamParser::decodeHanziSegment of the file qrcode/decoder/decodedbitstreamparser.cpp. The manipulation leads to memory leak. The attack may be launched remotely. The name of the patch is 2b62ff6181163eea029ed1cab11363b4996e9cd6. It is recommended to apply a patch to fix this issue. The identifier of this vulnerability is VDB-228548.

A vulnerability classified as problematic was found in OpenCV wechatqrcode Module up to 4.7.0. Affected by this vulnerability is the function DecodedBitStreamParser::decodeByteSegment of the file qrcode/decoder/decodedbitstreamparser.cpp. The manipulation leads to null pointer dereference. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. It is recommended to apply a patch to fix this issue. The associated identifier of this vulnerability is VDB-228547.

An exploitable heap buffer overflow vulnerability exists in the data structure persistence functionality of OpenCV, before version 4.2.0. A specially crafted JSON file can cause a buffer overflow, resulting in multiple heap corruptions and potentially code execution. An attacker can provide a specially crafted file to trigger this vulnerability.

An exploitable heap buffer overflow vulnerability exists in the data structure persistence functionality of OpenCV 4.1.0. A specially crafted XML file can cause a buffer overflow, resulting in multiple heap corruptions and potential code execution. An attacker can provide a specially crafted file to trigger this vulnerability.

An out-of-bounds read was discovered in OpenCV before 4.1.1. Specifically, variable coarsestscale is assumed to be greater than or equal to finestscale within the calc()/oclcalc() functions in disflow.cpp. However, this is not true when dealing with small images, leading to an out-of-bounds read of the heap-allocated arrays Ux and Uy.

Last updated 4 February 2025

An issue was discovered in OpenCV 4.1.0. There is a divide-by-zero error in cv::HOGDescriptor::getDescriptorSize in modules/objdetect/src/hog.cpp.

An issue was discovered in OpenCV before 4.1.1. There is a NULL pointer dereference in the function cv::XMLParser::parse at modules/core/src/persistence.cpp.

An issue was discovered in OpenCV before 3.4.7 and 4.x before 4.1.1. There is an out of bounds read/write in the function HaarEvaluator::OptFeature::calc in modules/objdetect/src/cascadedetect.hpp, which leads to denial of service.

An issue was discovered in OpenCV before 3.4.7 and 4.x before 4.1.1. There is an out of bounds read in the function cv::predictOrdered<cv::HaarEvaluator> in modules/objdetect/src/cascadedetect.hpp, which leads to denial of service.

DISPUTED The validateInputImageSize function in modules/imgcodecs/src/loadsave.cpp in OpenCV 3.4.1 allows remote attackers to cause a denial of service (assertion failure) because (size.width <= (1<<20)) may be false. Note: “OpenCV CVAssert is not an assertion (C-like assert()), it is regular C++ exception which can raised in case of invalid or non-supported parameters.”

DISPUTED The validateInputImageSize function in modules/imgcodecs/src/loadsave.cpp in OpenCV 3.4.1 allows remote attackers to cause a denial of service (assertion failure) because (pixels <= (1<<30)) may be false. Note: “OpenCV CVAssert is not an assertion (C-like assert()), it is regular C++ exception which can raised in case of invalid or non-supported parameters.”

DISPUTED The validateInputImageSize function in modules/imgcodecs/src/loadsave.cpp in OpenCV 3.4.1 allows remote attackers to cause a denial of service (assertion failure) because (size.height <= (1<<20)) may be false. Note: “OpenCV CVAssert is not an assertion (C-like assert()), it is regular C++ exception which can raised in case of invalid or non-supported parameters.”

In OpenCV 3.3.1, an assertion failure happens in cv::RBaseStream::setPos in modules/imgcodecs/src/bitstrm.cpp because of an incorrect integer cast.

In OpenCV 3.3.1, a heap-based buffer overflow happens in cv::Jpeg2KDecoder::readComponent8u in modules/imgcodecs/src/grfmtjpeg2000.cpp when parsing a crafted image file.

In opencv/modules/imgcodecs/src/utils.cpp, functions FillUniColor and FillUniGray do not check the input length, which can lead to integer overflow. If the image is from remote, may lead to remote code execution or denial of service. This affects Opencv 3.3 and earlier.

In OpenCV 3.3.1, a heap-based buffer over-read exists in the function cv::HdrDecoder::checkSignature in modules/imgcodecs/src/grfmthdr.cpp.

OpenCV 3.3.1 has a Buffer Overflow in the cv::PxMDecoder::readData function in grfmtpxm.cpp, because an incorrect size value is used.

OpenCV (Open Source Computer Vision Library) 3.3 has an out-of-bounds write error in the function FillColorRow1 in utils.cpp when reading an image file by using cv::imread. NOTE: this vulnerability exists because of an incomplete fix for CVE-2017-12597.

In opencv/modules/imgcodecs/src/grfmtpxm.cpp, function ReadNumber did not checkout the input length, which lead to integer overflow. If the image is from remote, may lead to remote code execution or denial of service. This affects Opencv 3.3 and earlier.

In opencv/modules/imgcodecs/src/grfmtpxm.cpp, function PxMDecoder::readData has an integer overflow when calculate srcpitch. If the image is from remote, may lead to remote code execution or denial of service. This affects Opencv 3.3 and earlier.

In modules/imgcodecs/src/grfmtpxm.cpp, the length of buffer AutoBuffer src is small than expected, which will cause copy buffer overflow later. If the image is from remote, may lead to remote code execution or denial of service. This affects Opencv 3.3 and earlier.

OpenCV (Open Source Computer Vision Library) through 3.3 has an out-of-bounds write error in the function FillColorRow4 in utils.cpp when reading an image file by using cv::imread.

OpenCV (Open Source Computer Vision Library) through 3.3 has a denial of service (memory consumption) issue, as demonstrated by the 10-opencv-dos-memory-exhaust test case.

OpenCV (Open Source Computer Vision Library) through 3.3 has a denial of service (CPU consumption) issue, as demonstrated by the 11-opencv-dos-cpu-exhaust test case.

OpenCV (Open Source Computer Vision Library) through 3.3 has an out-of-bounds read error in the function icvCvtBGRA2BGR8uC4C3R when reading an image file by using cv::imread.

OpenCV (Open Source Computer Vision Library) through 3.3 has an out-of-bounds write error in the FillUniColor function in utils.cpp when reading an image file by using cv::imread.

OpenCV (Open Source Computer Vision Library) through 3.3 has an invalid write in the cv::RLByteStream::getBytes function in modules/imgcodecs/src/bitstrm.cpp when reading an image file by using cv::imread, as demonstrated by the 2-opencv-heapoverflow-fseek test case.