UBUNTU-CVE-2020-25600

An issue was discovered in Xen through 4.14.x. Out of bounds event channels are available to 32-bit x86 domains. The so called 2-level event channel model imposes different limits on the number of usable event channels for 32-bit x86 domains vs 64-bit or Arm either bitness ones. 32-bit x86 domain...

CVE-2020-25600

An issue was discovered in Xen through 4.14.x. Out of bounds event channels are available to 32-bit x86 domains. The so called 2-level event channel model imposes different limits on the number of usable event channels for 32-bit x86 domains vs 64-bit or Arm either bitness ones. 32-bit x86 domain...

CVE-2020-25600

The connected XSA-342 advisory provides concrete details for CVE-2020-25600: Xen 2-level event channel model mismanages the per-guest limit, causing 32-bit x86 domains (including Domain 0) to observe successful allocations that should fail, risking corruption of the shared info structure and enab...

CVE-2020-25600

An issue was discovered in Xen through 4.14.x. Out of bounds event channels are available to 32-bit x86 domains. The so called 2-level event channel model imposes different limits on the number of usable event channels for 32-bit x86 domains vs 64-bit or Arm either bitness ones. 32-bit x86 domain...

Xen buffer overflow vulnerability (CNVD-2020-53819)

Xen is an open source virtual machine monitor product from the University of Cambridge, UK. The product enables different and incompatible operating systems to run on the same computer and supports runtime migration to ensure uptime and avoid downtime. Xen suffers from a buffer overflow...

out of bounds event channels available to 32-bit x86 domains

ISSUE DESCRIPTION The so called 2-level event channel model imposes different limits on the number of usable event channels for 32-bit x86 domains vs 64-bit or Arm either bitness ones. 32-bit x86 domains can use only 1023 channels, due to limited space in their shared between guest and Xen...

Sweet32 Attack

OpenVPN is vulnerable to Sweet32 Attack. When using a 64-bit block cipher, it is easier for remote attackers to obtain cleartext data via a birthday attack against a long-duration encrypted session, as demonstrated by an HTTP-over-OpenVPN session using Blowfish in CBC mode, aka a "Sweet32" attack...

fluent-bit:flb-it-fuzz-msgpack_parse_fuzzer_OSSFUZZ: Heap-buffer-overflow in encoded_to_buf

Project: https://github.com/fluent/fluent-bit.git Detailed Report: https://oss-fuzz.com/testcase?key=5654071359569920 Project: fluent-bit Fuzzing Engine: libFuzzer Fuzz Target: flb-it-fuzz-msgpackparsefuzzerOSSFUZZ Job Type: libfuzzerasanfluent-bit Platform Id: linux Crash Type:...

fluent-bit:flb-it-fuzz-msgpack_to_gelf_fuzzer_OSSFUZZ: Heap-buffer-overflow in flb_msgpack_to_gelf

Project: https://github.com/fluent/fluent-bit.git Detailed Report: https://oss-fuzz.com/testcase?key=4785819234336768 Project: fluent-bit Fuzzing Engine: libFuzzer Fuzz Target: flb-it-fuzz-msgpacktogelffuzzerOSSFUZZ Job Type: libfuzzerasanfluent-bit Platform Id: linux Crash Type:...

The Basics of Exploit Development 5: x86-64 Buffer Overflows

In this article we will be covering a technique similar to the one in the first installment of this series, however, with the twist in that this exploit will be of a 64-bit process running on Windows 10. Due to the nature of modern operating systems and the exploit mitigation techniques they...

CVE-2020-0407

In various functions in fscryptice.c and related files in some implementations of f2fs encryption that use encryption hardware which only supports 32-bit IVs Initialization Vectors, 64-bit IVs are used and later are truncated to 32 bits. This may cause IV reuse and thus weakened disk encryption...

Exploit for CVE-2015-3636

PoC exploit for CVE-2015-3636 targeting 32-bit Android OS. The exploit targets the Linux kernel, specifically the getroot function, which allows for privilege escalation. The probable entry point is the poc.c file, which is compiled into an executable using the Android.mk file. The exploit uses t...

Microsoft Internet Explorer 11 Use-After-Free

Exploit Title: Internet Explorer 11 - Use-After-Free Google Dork: if applicable Date: 2020-09-06 Exploit Author: Tgroup Vendor Homepage: Microsoft.com Version: IE 11 REQUIRED Tested on: Windows 7 x64 CVE : CVE-2020-0674 //...

linux-exploit-development-tutorial

It is an offensive tool for Linux. This is a tutorial for Linux exploit development, specifically targeting stack and heap security mechanisms. The tutorial covers various topics, including format string attacks, integer overflow, and buffer overflow attacks. It also discusses how to bypass...

CVE-2020-25221

getgatepage in mm/gup.c in the Linux kernel 5.7.x and 5.8.x before 5.8.7 allows privilege escalation because of incorrect reference counting caused by gate page mishandling of the struct page that backs the vsyscall page. The result is a refcount underflow. This can be triggered by any 64-bit...

Microsoft Windows Multiple Vulnerabilities (KB4570333)

This host is missing a critical security update according to Microsoft KB4570333 SPDX-FileCopyrightText: 2020 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

Security Update for Microsoft Excel 2016 (KB4484507) 64-Bit Edition

A security vulnerability exists in Microsoft Excel 2016 64-Bit Edition that could allow arbitrary code to run when a maliciously modified file is opened. This update resolves that vulnerability...

Security Update for Microsoft Word 2016 (KB4484510) 64-Bit Edition

A security vulnerability exists in Microsoft Word 2016 64-Bit Edition that could allow arbitrary code to run when a maliciously modified file is opened. This update resolves that vulnerability...

Security Update for Microsoft Office 2016 (KB4484513) 64-Bit Edition

A security vulnerability exists in Microsoft Office 2016 64-Bit Edition that could allow arbitrary code to run when a maliciously modified file is opened. This update resolves that vulnerability...

Security Update for Microsoft Office 2016 (KB4484513) 32-Bit Edition

A security vulnerability exists in Microsoft Office 2016 32-Bit Edition that could allow arbitrary code to run when a maliciously modified file is opened. This update resolves that vulnerability...