Neutralization reaction

Incident Response Guide PDF Despite there being no revolutionary changes to the cyberthreat landscape in the last few years, the growing informatization of business processes provides cybercriminals with numerous opportunities for attacks. They are focusing on targeted attacks and learning to use...

kernel: race condition between direct and memory-mapped I/O in fs/xfs/xfs_aops.c

It was found that the Linux kernel can hit a BUGON statement in the xfsgetblocks in the fs/xfs/xfsaops.c because of a race condition between direct and memory-mapped I/O associated with a hole in a file that is handled with BUGON instead of an I/O failure. This allows a local unprivileged attacke...

kernel: ext4 filesystem page fault race condition with fallocate call.

A flaw was found in the Linux kernel when attempting to "punch a hole" in files existing on an ext4 filesystem. When punching holes into a file races with the page fault of the same area, it is possible that freed blocks remain referenced from page cache pages mapped to process' address space...

kernel: race condition between direct and memory-mapped I/O in fs/xfs/xfs_aops.c

It was found that the Linux kernel can hit a BUGON statement in the xfsgetblocks in the fs/xfs/xfsaops.c because of a race condition between direct and memory-mapped I/O associated with a hole in a file that is handled with BUGON instead of an I/O failure. This allows a local unprivileged attacke...

kernel: ext4 filesystem page fault race condition with fallocate call.

A flaw was found in the Linux kernel when attempting to "punch a hole" in files existing on an ext4 filesystem. When punching holes into a file races with the page fault of the same area, it is possible that freed blocks remain referenced from page cache pages mapped to process' address space...

Experts Unveil Cyber Espionage Attacks by CopyKittens Hackers

Security researchers have discovered a new, massive cyber espionage campaign that mainly targets people working in government, defence and academic organisations in various countries. The campaign is being conducted by an Iran-linked threat group, whose activities, attack methods, and targets hav...

Remotely Exploitable Flaw Puts Millions of Internet-Connected Devices at Risk

Security researchers have discovered a critical remotely exploitable vulnerability in an open-source software development library used by major manufacturers of the Internet-of-Thing devices that eventually left millions of devices vulnerable to hacking. The vulnerability CVE-2017-9765, discovere...

An Assassin's Teapot

This teapot has two chambers. Liquid is released from one or the other depending on whether an air hole is covered. I want one...

Researchers Find BlackEnergy APT Links in ExPetr Code

Researchers have found links between the BlackEnergy APT group and threat actors behind the ExPetr malware used in last month’s global attacks. According to researchers at Kaspersky Lab, there are strong similarities between older versions of BlackEnergy’s KillDisk ransomware compared to ExPetr...

Petya Is Not Ransomware, It's a 'Wiper'

The outbreak of the ExPetr malware isn’t a ransomware attack, but more precisely, it’s a wiper attack that sabotaged PCs globally, overwriting their Master Boot Record forever. That’s the analysis of security experts from Kaspersky Lab and Comae Technologies who shared their latest research on th...

Microsoft Windows - 'nt!NtQueryInformationProcess (ProcessVmCounters)' Kernel Stack Memory Disclosure

/ Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=1190&desc=2 We have discovered that the nt!NtQueryInformationProcess system call called with the ProcessVmCounters information class discloses portions of uninitialized kernel stack memory to user-mode clients, due to output...

Very Fast Network Logon Cracker: THC-Hydra

Very Fast Network Logon Cracker Number one of the biggest security holes are passwords, as every password security study shows. Hydra is a parallized login cracker which supports numerous protocols to attack. New modules are easy to add, beside that, it is flexible and very fast. This fast, and...

Pawn Storm – A Look Into this Cyberespionage Actor Group

In April 2017 my monthly threat webinar focused on a cyberespionage group our Forward-Looking Threat Researcher, Feike Hacquebord, has been following for many years and recently published a report into the most recent two years of activities. In this post I want to focus on their tools and tactic...

Hackers stole $800,000 from ATMs using Fileless Malware

Hackers targeted at least 8 ATMs in Russia and stole $800,000 in a single night, but the method used by the intruders remained a complete mystery with CCTV footage just showing a lone culprit walking up to the ATM and collecting cash without even touching the machine. Even the affected banks coul...

Linux/x86 - Bind Shell Shellcode (42 bytes)

Linux/x86 - Bind Shell Shellcode 42 bytes. Shellcode exploit for Linx86 platform / SuperSmallBindShell 2 x86 Date: 17.03.2017 This shellcode will listen on random port and show you how deep the rabbit hole goes Please note that ports below 1024 require high privileges to bind! Shellcode Author:...

Fedora 25 : wireshark (2017-6c91c98b33)

Security fix for Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. %NASLMINLEVEL 70300 C Tenable...

diffoscope -- arbitrary file write

Ximin Luo reports: v67 introduced a security hole where diffoscope may write to arbitrary locations on disk depending on the contents of an untrusted archive...

Zendesk: SMTP user enumeration via mail.zendesk.com

Several methods exist that can be used to ██████████ SMTP to enumerate valid usernames and addresses; namely VRFY, EXPN, and RCPT TO. mail.zendesk.com does not reply to EXPN or RCPT TO so we will concentrate on VRFY in this report. The VRFY command will request that the receiving SMTP server veri...

Black Hole Exploit Kit Website Redirection

Black Hole Exploit Kit exploit kit is a web exploit kit that operates by delivering malicious payload to the victim's computer. Remote attackers can infect users with Black Hole EK by redirecting them to a malicious web page. Successful infection will allow the attacker to download additional...

Google spreadsheet CSRF+JSON hijacking vulnerabilities-vulnerability warning-the black bar safety net

In 2 0 1 5 years 1 0 months I am in the Google spreadsheet for the API interface found in the JSON + CSRF（cross-site forgery requests, Clickjacking vulnerability. An attacker can exploit this vulnerability in not authorized to access Google Drive files of the case, to obtain the user of the...