#dos

### Impact The implementation of [`tf.raw_ops.TensorSummaryV2`](https://github.com/tensorflow/tensorflow/blob/f3b9bf4c3c0597563b289c0512e98d4ce81f886e/tensorflow/core/kernels/summary_tensor_op.cc#L33-L58) does not fully validate the input arguments. This results in a `CHECK`-failure which can be used to trigger a denial of service attack: ```python import numpy as np import tensorflow as tf tf.raw_ops.TensorSummaryV2( tag=np.array('test'), tensor=np.array(3), serialized_summary_metadata=tf.io.encode_base64(np.empty((0)))) ``` The code assumes `axis` is a scalar but there is no validation for this. ```cc const Tensor& serialized_summary_metadata_tensor = c->input(2); // ... ParseFromTString(serialized_summary_metadata_tensor.scalar<tstring>()(), v->mutable_metadata()); ``` ### Patches We have patched the issue in GitHub commit [290bb05c80c327ed74fae1d089f1001b1e2a4ef7](https://github.com/tensorflow/tensorflow/commit/290bb05c80c327ed74fae1d089...

Totolink A3600R V4.1.2cu.5182_B20201102 was discovered to contain a stacker overflow in the fread function at infostat.cgi. This vulnerability allows attackers to cause a Denial of Service (DoS) via the parameter CONTENT_LENGTH.

In 2020, MSRC awarded two Identity Project Research Grants to support external researchers working to further strengthen the security of identity protocols and systems. Today we are pleased to release the results of the first of these projects. This research, led by independent security researcher Avinash Sudhodanan, investigated account pre-hijacking – a new class of … New Research Paper: Pre-hijacking Attacks on Web User Accounts Read More »

Windows OS can be configured to overlay a “language bar” on top of any application. When this OS functionality is enabled, the OS language bar UI will be viewable in the browser alongside the AVEVA InTouch Access Anywhere and Plant SCADA Access Anywhere applications. It is possible to manipulate the Windows OS language bar to launch an OS command prompt, resulting in a context-escape from application into OS.

Analysts have seen a massive spike in malicious activity by the XorDdos trojan in the last six months, against Linux cloud and IoT infrastructures .

Ubuntu Security Notice 5432-1 - It was discovered that libpng incorrectly handled memory when parsing certain PNG files. If a user or automated system were tricked into opening a specially crafted PNG file, an attacker could use this issue to cause libpng to crash, resulting in a denial of service, or possible execute arbitrary code. Zhengxiong Luo discovered that libpng incorrectly handled memory when parsing certain PNG files. If a user or automated system were tricked into opening a specially crafted PNG file, an attacker could use this issue to cause libpng to crash, resulting in a denial of service, or possible execute arbitrary code.

Multiple Denial-of-Service vulnerabilities was discovered in the F-Secure Atlant and in certain WithSecure products while scanning fuzzed PE32-bit files cause memory corruption and heap buffer overflow which eventually can crash the scanning engine. The exploit can be triggered remotely by an attacker.

NVIDIA recently released patches to address multiple flaws in Windows. Four of them were rated high in severity. The post Update now! Nvidia released fixes for 10 flaws in Windows GPU drivers appeared first on Malwarebytes Labs.

Fronton, a distributed denial-of-service (DDoS) botnet that came to light in March 2020, is much more powerful than previously thought, per the latest research. "Fronton is a system developed for coordinated inauthentic behavior on a massive scale," threat intelligence firm Nisos said in a report published last week. "This system includes a web-based dashboard known as SANA that enables a user

In 2020, MSRC awarded two Identity Project Research Grants to support external researchers working to further strengthen the security of identity protocols and systems. Today we are pleased to release the results of the first of these projects. This research, led by independent security researcher Avinash Sudhodanan, investigated account pre-hijacking – a new class of attacks affecting websites and other online services.