Analyzing Dark Crystal RAT, a C# Backdoor

The FireEye Mandiant Threat Intelligence Team helps protect our customers by tracking cyber attackers and the malware they use. The FLARE Team helps augment our threat intelligence by reverse engineering malware samples. Recently, FLARE worked on a new C variant of Dark Crystal RAT DCRat that the...

HiveJack - This Tool Can Be Used During Internal Penetration Testing To Dump Windows Credentials From An Already-Compromised Host

This tool can be used during internal penetration testing to dump Windows credentials from an already-compromised host. It allows one to dump SYSTEM, SECURITY and SAM registry hives and once copied to the attacker machines provides an option to delete these files to clear the trace. Often, this i...

The vulnerabilities of the functions Version.fetch_binary() and Version.fetch_source() in the python-apt package installation module allow a attacker to compromise data integrity.

The vulnerability of the Version.fetchbinary and Version.fetchsource functions in the python-apt package installation module is related to the improper verification of the MD5 hash sum only for the uploaded files. Exploiting this vulnerability could allow a remote attacker to compromise data...

DRUPAL-CONTRIB-2020-012

This module enables you to build forms and surveys in Drupal. The module doesn't sufficiently validate data submitted into Webform Signature element during webform submission creation. This allows a malicious user to generate and extract HMAC hashes for arbitrary data. Such HMAC hashes are used...

Logic Flaw Vulnerability in CPP-Ethereum JSON-RPC

CPP-Ethereum is a C++ client for Ethereum Application Programming Platform.JSON-RPC is one of the remote invocation services using JSON as the protocol. A security vulnerability exists in the minerstart API for JSON-RPC in CPP-Ethereum commit version 4e1015743b95821849d001618a7ce82c7c073768. An...

BCH public chain OP_CHECKDATASIG suffers from a logic flaw vulnerability

The attack payload is a precisely constructed P2SH Transaction that utilizes the OPCHECKDATASIG opcode introduced by the BCH upgrade last November. The attack payload has a SigOP count of 1334 15 = 20010, and this attack payload TX is rejected by the node with an error of too many sigops, which i...

Webform - Moderately critical - Access bypass - SA-CONTRIB-2020-012

This module enables you to build forms and surveys in Drupal. The module doesn't sufficiently validate data submitted into Webform Signature element during webform submission creation. This allows a malicious user to generate and extract HMAC hashes for arbitrary data. Such HMAC hashes are used...

ATutor LMS 2.2.4 Weak Password Reset Hash

Exploit Title: ATutor LMS 2.2.4 - Weak Password Reset Hash Date: 2020-05-05 Exploit Author: Hodorsec Version: 2.2.4 Software Link: https://atutor.github.io/atutor/downloads.html Vendor Homepage: https://atutor.github.io Tested on: Debian 10 x64 - PHP 7.3.15-3 Problem: While the original intention...

sudo: by using ! character in the shadow file instead of a password hash can access to a run as all sudoer account

When an account is disabled via the shadow file, by replacing the password hash with "!", it is not considered disabled by sudo. And depending on the configuration, sudo can be run by using such disabled account...

Kernel: net: using kernel space address bits to derive IP ID may potentially break KASLR

A flaw was found in the way the Linux kernel derived the IP ID field from a partial kernel space address returned by a nethashmix function. A remote user could observe this IP ID field to extract the kernel address bits used to derive its value, which may result in leaking the hash key and...

Kernel: net: using kernel space address bits to derive IP ID may potentially break KASLR

A flaw was found in the way the Linux kernel derived the IP ID field from a partial kernel space address returned by a nethashmix function. A remote user could observe this IP ID field to extract the kernel address bits used to derive its value, which may result in leaking the hash key and...

Netis E1+ 1.2.32533 - Backdoor Account (root)

Exploit Title: Netis E1+ 1.2.32533 - Backdoor Account root Date: 2020-04-25 Author: Besim ALTINOK Vendor Homepage: http://www.netis-systems.com Software Link: http://www.netis-systems.com/Suppory/downloads/dd/1/img/204 Version: V1.2.32533 Tested on: Netis E1+ V1.2.32533 Credit: İsmail BOZKURT...

CVE-2017-18697

creationtimestamp| type| source ---|---|--- 2020-04-24 20:37:08+00:00| seen| https://t.me/cibsecurity/11648...

Malicious USB Drives Infect 35,000 Computers With Crypto-Mining Botnet

Cybersecurity researchers from ESET on Thursday said they took down a portion of a malware botnet comprising at least 35,000 compromised Windows systems that attackers were secretly using to mine Monero cryptocurrency. The botnet, named "VictoryGate," has been active since May 2019, with infectio...

UBUNTU-CVE-2020-11940

In nDPI through 3.2 Stable, an out-of-bounds read in concathashstring in ssh.c can be exploited by a network-positioned attacker that can send malformed SSH protocol messages on a network segment monitored by nDPI's library...

CVE-2017-18797

creationtimestamp| type| source ---|---|--- 2020-04-21 22:59:03+00:00| seen| https://t.me/cibsecurity/11481...

Zoom Client Trust Management Issue Vulnerability

Zoom Client is a video conferencing client application from Zoom USA that supports multiple platforms. A trust management issue vulnerability exists in Zoom Client for Meetings version 4.6.11, which stems from the airhost.exe file initializing the SHA-256 hash value of the...

CVE-2020-11876

airhost.exe in Zoom Client for Meetings 4.6.11 uses the SHA-256 hash of 0123425234234fsdfsdr3242 for initialization of an OpenSSL EVP AES-256 CBC context. NOTE: the vendor states that this initialization only occurs within unreachable code...

CVE-2020-11876

airhost.exe in Zoom Client for Meetings 4.6.11 uses the SHA-256 hash of 0123425234234fsdfsdr3242 for initialization of an OpenSSL EVP AES-256 CBC context. NOTE: the vendor states that this initialization only occurs within unreachable code...

Code injection

airhost.exe in Zoom Client for Meetings 4.6.11 uses the SHA-256 hash of 0123425234234fsdfsdr3242 for initialization of an OpenSSL EVP AES-256 CBC context. NOTE: the vendor states that this initialization only occurs within unreachable code...