HandleKatz - PIC Lsass Dumper Using Cloned Handles

This tool was implemented as part of our Brucon2021 conference talk and demonstrates the usage of cloned handles to Lsass in order to create an obfuscated memory dump of the same. It compiles down to an executable living fully in its text segment. Thus, the extracted .text segment of the PE file ...

New Wslink Malware Loader Runs as a Server and Executes Modules in Memory

Cybersecurity researchers on Wednesday took the wraps off a "simple yet remarkable" malware loader for malicious Windows binaries targeting Central Europe, North America and the Middle East. Codenamed "Wslink" by ESET, this previously undocumented malware stands apart from the rest in that it run...

CVE-2021-42716

An issue was discovered in stb stbimage.h 2.27. The PNM loader incorrectly interpreted 16-bit PGM files as 8-bit when converting to RGBA, leading to a buffer overflow when later reinterpreting the result as a 16-bit buffer. An attacker could potentially have crashed a service using stbimage, or...

CVE-2021-42715

An issue was discovered in stb stbimage.h 1.33 through 2.27. The HDR loader parsed truncated end-of-file RLE scanlines as an infinite sequence of zero-length runs. An attacker could potentially have caused denial of service in applications using stbimage by submitting crafted HDR files...

Hackers Using Squirrelwaffle Loader to Deploy Qakbot and Cobalt Strike

A new spam email campaign has emerged as a conduit for a previously undocumented malware loader that enables the attackers to gain an initial foothold into enterprise networks and drop malicious payloads on compromised systems. "These infections are also used to facilitate the delivery of...

SQUIRRELWAFFLE Leverages malspam to deliver Qakbot, Cobalt Strike

By Edmund Brumaghin, Mariano Graziano and Nick Mavis. Executive summary Recently, a new threat, referred to as "SQUIRRELWAFFLE" is being spread more widely via spam campaigns, infecting systems with a new malware loader. This is a malware family that's been spread with increasing regularity and...

SquirrelWaffle Loader Malspams, Packs Qakbot, Cobalt Strike

SquirrelWaffle, a new malware loader, is mal-spamming malicious Microsoft Office documents to deliver Qakbot malware and the penetration-testing tool Cobalt Strike – two of the most common threats regularly observed targeting organizations around the world. Cisco Talos researchers said on Tuesday...

MAZ Loader < 1.4.1 - Arbitrary Loader Deletion via CSRF

The plugin does not enforce nonce checks, which allows attackers to make administrators delete arbitrary loaders via a CSRF attack The vendor has been notified on August 24th, 2021, as well as escalated to the WP plugins team 3 times, no fix was made despite two new versions being released...

WordPress MAZ Loader plugin <= 1.4.0 - Arbitrary Loader Deletion via Cross-Site Request Forgery (CSRF) vulnerability

Arbitrary Loader Deletion via Cross-Site Request Forgery CSRF vulnerability discovered by apple502j in WordPress MAZ Loader plugin versions = 1.4.0. Solution Update the WordPress MAZ Loader plugin to the latest available version at least 1.4.1...

stb stb_image.h has an unspecified vulnerability

stb is a single-file public domain library for C/C. stbimage.h is one of the image loaders. stb stbimage.h contains a security vulnerability that stems from the HDR loader parsing truncated file-tailed RLE scan lines into an infinitely long zero-length sequence. An attacker could cause a denial o...

MAZ Loader < 1.4.1 - Arbitrary Loader Deletion via CSRF

The plugin does not enforce nonce checks, which allows attackers to make administrators delete arbitrary loaders via a CSRF attack The vendor has been notified on August 24th, 2021, as well as escalated to the WP plugins team 3 times, no fix was made despite two new versions being released. PoC...

CVE-2021-42716

An issue was discovered in stb stbimage.h 2.27. The PNM loader incorrectly interpreted 16-bit PGM files as 8-bit when converting to RGBA, leading to a buffer overflow when later reinterpreting the result as a 16-bit buffer. An attacker could potentially have crashed a service using stbimage, or...

CVE-2021-42716

An issue was discovered in stb stbimage.h 2.27. The PNM loader incorrectly interpreted 16-bit PGM files as 8-bit when converting to RGBA, leading to a buffer overflow when later reinterpreting the result as a 16-bit buffer. An attacker could potentially have crashed a service using stbimage, or...

CVE-2021-42716

An issue was discovered in stb stbimage.h 2.27. The PNM loader incorrectly interpreted 16-bit PGM files as 8-bit when converting to RGBA, leading to a buffer overflow when later reinterpreting the result as a 16-bit buffer. An attacker could potentially have crashed a service using stbimage, or...

Code injection

An issue was discovered in stb stbimage.h 1.33 through 2.27. The HDR loader parsed truncated end-of-file RLE scanlines as an infinite sequence of zero-length runs. An attacker could potentially have caused denial of service in applications using stbimage by submitting crafted HDR files...

UBUNTU-CVE-2021-42716

An issue was discovered in stb stbimage.h 2.27. The PNM loader incorrectly interpreted 16-bit PGM files as 8-bit when converting to RGBA, leading to a buffer overflow when later reinterpreting the result as a 16-bit buffer. An attacker could potentially have crashed a service using stbimage, or...

CVE-2021-42715

An issue was discovered in stb stbimage.h 1.33 through 2.27. The HDR loader parsed truncated end-of-file RLE scanlines as an infinite sequence of zero-length runs. An attacker could potentially have caused denial of service in applications using stbimage by submitting crafted HDR files...

Buffer overflow

An issue was discovered in stb stbimage.h 2.27. The PNM loader incorrectly interpreted 16-bit PGM files as 8-bit when converting to RGBA, leading to a buffer overflow when later reinterpreting the result as a 16-bit buffer. An attacker could potentially have crashed a service using stbimage, or...

CVE-2021-42716

An issue was discovered in stb stbimage.h 2.27. The PNM loader incorrectly interpreted 16-bit PGM files as 8-bit when converting to RGBA, leading to a buffer overflow when later reinterpreting the result as a 16-bit buffer. An attacker could potentially have crashed a service using stbimage, or...

CVE-2021-42716

An issue was discovered in stb stbimage.h 2.27. The PNM loader incorrectly interpreted 16-bit PGM files as 8-bit when converting to RGBA, leading to a buffer overflow when later reinterpreting the result as a 16-bit buffer. An attacker could potentially have crashed a service using stbimage, or...