USN-7788-1: libmspack vulnerabilities

Jakub Wilk discovered that libmspack did not correctly handle certain integer operations and bounds checking. A remote attacker could possibly use this issue to cause a denial of service. CVE-2015-4467, CVE-2015-4468, CVE-2015-4469, CVE-2015-4472 It was discovered that libmspack incorrectly handl...

Exploit for Out-of-bounds Write in 7-Zip

This repository is an exploit module for CVE-2022-29072, a privilege escalation vulnerability in 7-Zip through version 21.07 on Windows. The vulnerability allows an attacker to execute commands with elevated privileges when a file with the .7z extension is dragged to the HelpContents area. The...

Linux Distros Unpatched Vulnerability : CVE-2015-4468

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Multiple integer overflows in the searchchunk function in chmd.c in libmspack before 0.5 allow remote attackers to cause a denial of service buffer over-read an...

Linux Distros Unpatched Vulnerability : CVE-2018-14680

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - An issue was discovered in mspack/chmd.c in libmspack before 0.7alpha. It does not reject blank CHM filenames. CVE-2018-14680 Note that Nessus relies on the...

Linux Distros Unpatched Vulnerability : CVE-2018-14682

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - An issue was discovered in mspack/chmd.c in libmspack before 0.7alpha. There is an off-by-one error in the TOLOWER macro for CHM decompression. CVE-2018-14682...

Linux Distros Unpatched Vulnerability : CVE-2015-4472

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Off-by-one error in the READENCINT macro in chmd.c in libmspack before 0.5 allows remote attackers to cause a denial of service application crash or possibly ha...

UBUNTU-CVE-2025-48172

CHMLib through 2bef8d0, as used in SumatraPDF and other products, has a chmlib.c chmdecompressblock integer overflow. There is a resultant heap-based buffer overflow in chmfetchbytes...

N. Korea-linked Kimsuky Shifts to Compiled HTML Help Files in Ongoing Cyberattacks

The North Korea-linked threat actor known as Kimsuky aka Black Banshee, Emerald Sleet, or Springtail has been observed shifting its tactics, leveraging Compiled HTML Help CHM files as vectors to deliver malware for harvesting sensitive data. Kimsuky, active since at least 2012, is known to target...

The Updated APT Playbook: Tales from the Kimsuky threat actor group

Co-authors are Christiaan Beek and Raj Samani Within Rapid7 Labs we continually track and monitor threat groups. This is one of our key areas of focus as we work to ensure that our ability to protect customers remains constant. As part of this process, we routinely identify evolving tactics from...

Aladdin - Payload Generation Technique That Allows The Deseriallization Of A .NET Payload And Execution In Memory

Aladdin is a payload generation technique based on the work of James Forshaw @tiraniddo that allows the deseriallization of a .NET payload and execution in memory. The original vector was documented on https://www.tiraniddo.dev/2017/07/dg-on-windows-10-s-executing-arbitrary.html. By spawning the...

Denial Of Service (DoS)

libmspack is vulnerable to Denial Of Service DoS. The vulnerability exists due to the chmdreadheaders function of chmd.c which does not properly validate name lengths, which allows an attacker to cause an application crash through the maliciously crafted CHM file...

STARK#MULE Targets Koreans with U.S. Military-themed Document Lures

An ongoing cyber attack campaign has set its sights on Korean-speaking individuals by employing U.S. Military-themed document lures to trick them into running malware on compromised systems. Cybersecurity firm Securonix is tracking the activity under the name STARKMULE. The scale of the attacks i...

North Korean Kimsuky Hackers Strike Again with Advanced Reconnaissance Malware

The North Korean advanced persistent threat APT group known as Kimsuky has been observed using a piece of custom malware called RandomQuery as part of a reconnaissance and information exfiltration operation. "Lately, Kimsuky has been consistently distributing custom malware as part of...

Tonto Team Uses Anti-Malware File to Launch Attacks on South Korean Institutions

South Korean education, construction, diplomatic, and political institutions are at the receiving end of new attacks perpetrated by a China-aligned threat actor known as the Tonto Team. "Recent cases have revealed that the group is using a file related to anti-malware products to ultimately execu...

Tonto Team Uses Anti-Malware File to Launch Attacks on South Korean Institutions

South Korean education, construction, diplomatic, and political institutions are at the receiving end of new attacks perpetrated by a China-aligned threat actor known as the Tonto Team. "Recent cases have revealed that the group is using a file related to anti-malware products to ultimately execu...

The Bitter Group Targets Chinese Agencies with CHM Malware via Email Attachments

Threat Level Attack Report For a detailed threat advisory, download the pdf file here Summary The Bitter group targets South Asian government agencies with Office documents and has recently distributed CHM malware to specific Chinese organizations via email attachments. To receive real-time threa...

Bitter APT Group Targets Chinese Energy Sector with New phishing Campaign

Threat Level Actor Report For a detailed threat advisory, download the pdf file here Summary A new cyber espionage campaign targeting the energy sector in China by the South Asian threat group Bitter APT. The campaign involves the use of social engineering tactics through phishing emails that...

CBL Mariner 2.0 Security Update: clamav (CVE-2022-20770)

The version of clamav installed on the remote CBL Mariner 2.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2022-20770 advisory. - On April 20, 2022, the following vulnerability in the ClamAV scanning library versions 0.103.5 and earlier a...

ScarCruft's Evolving Arsenal: Researchers Reveal New Malware Distribution Techniques

The North Korean advanced persistent threat APT actor dubbed ScarCruft is using weaponized Microsoft Compiled HTML Help CHM files to download additional malware onto targeted machines. According to multiple reports from AhnLab Security Emergency response Center ASEC, SEKOIA.IO, and Zscaler, the...

Important: clamav

Issue Overview: A vulnerability in the OOXML parsing module in Clam AntiVirus ClamAV Software version 0.104.1 and LTS version 0.103.4 and prior versions could allow an unauthenticated, remote attacker to cause a denial of service condition on an affected device. The vulnerability is due to improp...