Exploit for Path Traversal in Microsoft

This repository is a proof-of-concept PoC exploit for CVE-2021-40444, a Microsoft Office Word remote code execution vulnerability. The PoC is a malicious docx generator that creates a document that, when opened, will execute arbitrary code on the victim's system. The PoC consists of several files...

CVE-2021-30919

An out-of-bounds write was addressed with improved input validation. This issue is fixed in iOS 15.1 and iPadOS 15.1, macOS Monterey 12.0.1, iOS 14.8.1 and iPadOS 14.8.1, tvOS 15.1, watchOS 8.1, Security Update 2021-007 Catalina, macOS Big Sur 11.6.1. Processing a maliciously crafted PDF may lead...

Confucius Uses Pegasus Spyware-related Lures to Target Pakistani Military

While investigating the Confucius threat actor, we found a recent spear phishing campaign that utilizes Pegasus spyware-related lures to entice victims into opening a malicious document downloading a file stealer...

CVE-2021-32798

The Jupyter notebook is a web-based notebook environment for interactive computing. In affected versions untrusted notebook can execute code on load. Jupyter Notebook uses a deprecated version of Google Caja to sanitize user inputs. A public Caja bypass can be used to trigger an XSS when a victim...

Denial Of Service (DoS)

xlsx is vulnerable to denial of service. An attacker is able to crash the application via a malicious .xlsx document...

Denial Of Service (DoS)

xlsx is vulnerable to denial of service. An attacker is able to crash the application via a malicious .xlsx document...

Denial Of Service

xlsx of sheetjs is vulnerable to denial of service. The vulnerability exists due to an XLS Xnum Buffer underflow. An attacker is able to crash the system by uploading a malicious crafted xlsx document...

Andariel evolves to target South Korea with ransomware

Executive summary In April 2021, we observed a suspicious Word document with a Korean file name and decoy. It revealed a novel infection scheme and an unfamiliar payload. While we were doing our research into these findings, Malwarebytes published a nice report with technical details about the sa...

A deep dive into Saint Bot, a new downloader

This post was authored by Hasherezade with contributions from Hossein Jazi and Erika Noerenberg In late March 2021, Malwarebytes analysts discovered a phishing email with an attached zip file containing unfamiliar malware. Contained within the zip file was a PowerShell script masquerading as a li...

User content sandbox can be confused into opening arbitrary documents

Impact The user content sandbox can be abused to trick users into opening unexpected documents after several user interactions. The content can be opened with a blob origin from the Matrix client, so it is possible for a malicious document to access user messages and secrets. Patches This has bee...

PT-2021-2327 · Adobe · Reader +1

Name of the Vulnerable Software and Affected Versions: Adobe Acrobat and Reader versions 2020.013.20074 and earlier, 2020.001.30018 and earlier, 2017.011.30188 and earlier Description: A heap-based buffer overflow vulnerability exists, allowing an unauthenticated attacker to achieve arbitrary cod...

CVE-2020-27248

A specially crafted document can cause the document parser to copy data from a particular record type into a static-sized buffer within an object that is smaller than the size used for the copy, which will cause a heap-based buffer overflow. In version/Instance 0x0003 and 0x0014, an attacker can...

Sharing eBook With Your Kindle Could Have Let Hackers Hijack Your Account

Amazon has addressed a number of flaws in its Kindle e-reader platform that could have allowed an attacker to take control of victims' devices by simply sending them a malicious e-book. Dubbed "KindleDrip," the exploit chain takes advantage of a feature called "Send to Kindle" to send a...

Microsoft Security Essentials RCE Vulnerability (Jan 2021)

This host is missing a critical security update according to Microsoft Security Updates released for Microsoft Security Essentials Protection Engine dated 12-01-2021 SPDX-FileCopyrightText: 2021 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C ...

ALERT: North Korean hackers targeting South Korea with RokRat Trojan

A North Korean hacking group has been found deploying the RokRat Trojan in a new spear-phishing campaign targeting the South Korean government. Attributing the attack to APT37 aka Starcruft, Ricochet Chollima, or Reaper, Malwarebytes said it identified a malicious document last December that, whe...

Retrohunting APT37: North Korean APT used VBA self decode technique to inject RokRat

This post was authored by Hossein Jazi On December 7 2020 we identified a malicious document uploaded to Virus Total which was purporting to be a meeting request likely used to target the government of South Korea. The meeting date mentioned in the document was 23 Jan 2020, which aligns with the...

Digitally Signed Bandook Trojan Reemerges in Global Spy Campaign

A wave of targeted cyberattack campaigns bent on espionage is cresting around the globe, using a strain of a 13-year old backdoor trojan named Bandook. According to Check Point Research, Bandook was last spotted being used in 2015 and 2017/2018, in the “Operation Manul” and “Dark Caracal”...

CVE-2020-24436

Acrobat Pro DC versions 2020.012.20048 and earlier, 2020.001.30005 and earlier and 2017.011.30175 and earlier are affected by an out-of-bounds write vulnerability that could result in writing past the end of an allocated memory structure. An attacker could leverage this vulnerability to execute...

CVE-2020-24436

Acrobat Pro DC versions 2020.012.20048 and earlier, 2020.001.30005 and earlier and 2017.011.30175 and earlier are affected by an out-of-bounds write vulnerability that could result in writing past the end of an allocated memory structure. An attacker could leverage this vulnerability to execute...

Fake COVID-19 survey hides ransomware in Canadian university attack

This post was authored by Jérôme Segura with contributions from Hossein Jazi, Hasherezade and Marcelo Rivero. In recent weeks, weve observed a number of phishing attacks against universities worldwide which we attributed to the Silent Librarian APT group. On October 19, we identified a new phishi...