QEMU: slirp: heap buffer overflow while reassembling fragmented datagrams

A heap buffer overflow issue was found in the way SLiRP networking back-end in QEMU processes fragmented packets. It could occur while reassembling the fragmented datagrams of an incoming packet. A privileged user/process inside guest could use this flaw to crash the QEMU process resulting in DoS...

CVE-2018-10839

An integer overflow issue was found in the NE200 NIC emulation. It could occur while receiving packets from the network, if the size value was greater than INTMAX. Such overflow would lead to stack buffer overflow issue. A user inside guest could use this flaw to crash the QEMU process, resulting...

Security Bulletin: Vulnerability in SSLv3 enabled in IBM Host On-Demand affects Rational Functional Tester (CVE-2014-3566)

Summary SSLv3 contains a vulnerability that has been referred to as the Padding Oracle On Downgraded Legacy Encryption POODLE attack. SSLv3 is enabled in IBM Rational Host On-Demand terminal that is bundled with Rational Functional Tester for terminal emulation. Vulnerability Details CVEID:...

unicorn/fuzz_emu_m68k_be: Crash in cpu_dump_state

Project: https://github.com/unicorn-engine/unicorn.git Detailed report: https://oss-fuzz.com/testcase?key=5753575662157824 Project: unicorn Fuzzer: libFuzzerunicornfuzzemum68kbe Fuzz target binary: fuzzemum68kbe Job Type: libfuzzerasanunicorn Platform Id: linux Crash Type: UNKNOWN READ Crash...

DEBIAN-CVE-2018-10853

A flaw was found in the way Linux kernel KVM hypervisor before 4.18 emulated instructions such as sgdt/sidt/fxsave/fxrstor. It did not check current privilegeCPL level while emulating unprivileged instructions. An unprivileged guest user/process could use this flaw to potentially escalate...

Comparison of Open Source Adversary Emulation Tools

PenTestIT RSS Feed If you liked my older post titled "List of Adversary Emulation Tools", I am sure you must want to know what is the difference or comparison between the different tools. This post is an attempt to do just that -to list down the comparison of open source adversary emulation tools...

Darling - Darwin/macOS Emulation Layer For Linux

Darling is a runtime environment for OS X applications. Please note that no GUI applications are supported at the moment. Download Darling uses many Git submodules, so a plain clone will not do. git clone --recurse-submodules https://github.com/darlinghq/darling.git Updating sources: git pull git...

You can now run Windows 95 on your Mac, Linux and Windows 10 devices

By Carolina The maximum RAM that Windows 95 consumes within Windows 10 is just 200 MB. We have seen hackers doing wonders like hacking PlayStation 4 to run PS2 emulation or homebrew software, hacking Android-compatible Google Daydream VR Controller to run on iOS or run Linux OS on Nintendo Switch...

[SECURITY] Fedora 28 Update: qemu-2.11.2-2.fc28

QEMU is a generic and open source processor emulator which achieves a good emulation speed by using dynamic translation. QEMU has two operating modes: Full system emulation. In this mode, QEMU emulates a full system for example a PC, including a processor and various peripherials. It can be used ...

[SECURITY] Fedora 27 Update: qemu-2.10.2-1.fc27

QEMU is a generic and open source processor emulator which achieves a good emulation speed by using dynamic translation. QEMU has two operating modes: Full system emulation. In this mode, QEMU emulates a full system for example a PC, including a processor and various peripherials. It can be used ...

Microsoft Windows Defender Evasive Executable

This module allows you to generate a Windows EXE that evades against Microsoft Windows Defender. Multiple techniques such as shellcode encryption, source code obfuscation, Metasm, and anti-emulation are used to achieve this. For best results, please try to use payloads that use a more secure...

DEBIAN-CVE-2017-7518

A flaw was found in the Linux kernel before version 4.12 in the way the KVM module processed the trap flagTF bit in EFLAGS during emulation of the syscall instruction, which leads to a debug exceptionDB being raised in the guest stack. A user/process inside a guest could use this flaw to...

CVE-2017-2620

CVE-2017-2620 affects QEMU with Cirrus CLGD 54xx VGA emulator prior to 2.8, where cirrus_bitblt_cputovideo can trigger out-of-bounds access while copying VGA data. This could allow a privileged guest user to crash the QEMU process or potentially execute arbitrary host code with QEMU privileges. P...

Highly Sophisticated Parasite RAT Emerges on the Dark Web

Researchers are tracking a remote access trojan RAT on underground markets that, so far, has only been attributed to one small malicious email campaign. However, the RAT, dubbed Parasite HTTP by the Proofpoint researchers that discovered it, has an impressive list of sophisticated features –...

ThreatList: Biggest Cybercrime Developments in 2018, So Far

Despite several successful crackdowns on several cybercriminal underworld gangs, miscreants have been highly active during the first half of 2018, according Flashpoint. According to Flashpoint’s mid-year Business Risk Intelligence report, released last month, the major developments in the...

Wavelink Emulation License Server Processing Buffer Overflow - Ver2 (CVE-2015-4059)

A buffer overflow vulnerability exists in Wavelink Emulation License Server. The vulnerability is due to a boundary error when parsing HTTP headers. By sending crafted requests to a vulnerable server, a remote unauthenticated attacker can possibly exploit this vulnerability to execute arbitrary...

ALPINE-CVE-2017-2615

Quick emulator QEMU built with the Cirrus CLGD 54xx VGA emulator support is vulnerable to an out-of-bounds access issue. It could occur while copying VGA data via bitblt copy in backward mode. A privileged user inside a guest could use this flaw to crash the QEMU process resulting in DoS or...

KVM Nest Virtualization L1 Guest Privilege Escalation

KVM nested virtualization: privilege escalation in L1 guest When KVM on Intel virtualizes another hypervisor as L1 VM it does not verify that VMX instructions from the L1 VM which trigger a VM exit and are emulated by L0 KVM are coming from ring 0. For code running on bare metal or VMX root mode...

KVM (Nested Virtualization) - L1 Guest Privilege Escalation

KVM Nested Virtualization - L1 Guest Privilege Escalation When KVM on Intel virtualizes another hypervisor as L1 VM it does not verify that VMX instructions from the L1 VM which trigger a VM exit and are emulated by L0 KVM are coming from ring 0. For code running on bare metal or VMX root mode th...

KVM (Nested Virtualization) - L1 Guest Privilege Escalation

When KVM on Intel virtualizes another hypervisor as L1 VM it does not verify that VMX instructions from the L1 VM which trigger a VM exit and are emulated by L0 KVM are coming from ring 0. For code running on bare metal or VMX root mode this is enforced by hardware. However, for code running in L...