Security Advisories

Security Advisories


SquirrelWaffle is a malware loader that is distributed through malicious spam mail with the purpose of infecting a device with second-stage malware like cracked copies of the red teaming tool Cobalt Strike and QakBot.


Critical vulnerability affects PAN firewalls using the GlobalProtect Portal VPN and allows for unauthenticated remote code execution on vulnerable installations of the product. The vulnerability affects PANOS 8.1 versions earlier than PAN-OS 8.1.17


Essential Advisories Recap for October 2021


Researchers from GoSecure found a bug in MySQL and MariaDB's SQL syntax parsers that silently drops some characters in a SQL query.

By abusing this bug attacker could bypass Web Application Firewalls including Amazon's AWS WAF and ModSecurity.


BlackMatter operators are running ransomware as a service (RaaS) model that can be used by hackers where they can compromise networks and install the ransomware on servers and PCs.


Microsoft as part of the Patch Tuesday of October 2021 released a patch for CVE-2021-26247, a Microsoft Exchange Server Remote Code Execution Vulnerability. The bug, which was discovered by the NSA (U.S.), has a CVSS score of 9.0 and is said to primarily target Exchange servers of high-value targets such as the networks of big businesses.


There are multiple vulnerabilities including unauthenticated RCE and EoP dubbed as OMIGOD in Microsoft's OMI agent. These vulnerabilities affect many Azure customers as this agent is a requirement for several Azure services including Azure Log Analytics, Azure Security Center, Azure Operations Management Suite. The vulnerabilities affect any OMI installation and are not limited to Azure.


Drinik Malicious Android app masquerades as an Income Tax Department app and after installation, the app asks the user to give necessary permissions like SMS, Call Log, Contacts, etc. The Application steals user information like PAN, Aadhaar number, address, date of birth, mobile number, email address and financial details like account number, IFS code, CIF number, debit card number, expiry date, CVV and PIN.


Hive Ransomware first appeared in June 2021. Hive Ransomware relies on a diverse set of tactics, techniques, and procedures (TTP) which make it difficult for any organization to defend against its attacks.


In view of ProxyShell attacks, Microsoft has recently released an update advising customers to update patches on Exchange servers to prevent such attacks.


LockFile ransomware targets organizations using Microsoft Exchange ProxyShell vulnerabilities and Windows PetitPotam NTLM Relay vulnerability.


LockBit ransomware attacked an IT consulting company, Accenture. Ransomware operators stole company data and have threatened to publish on the Dark web.


Multiple vulnerabilities have been discovered in Google Chrome which can be exploited by remote attacker to compromise the targeted system.


Threat actors are deploying the Mespinoza/ PYSA ransomware by accessing a system via remote desktop to copy and execute the ransomware on other systems on the network. Before deploying the ransomware to other systems, the attacker runs PowerShell scripts on the other systems on the network to exfiltrate files of interest and to maximize the impact of the ransomware.


Linux ELF-64 versions of the HelloKitty ransomware targeted VMware ESXi servers and virtual machines (VMs) running on them.


Microsoft released patches for 55 CVEs in Microsoft Windows, .NET Core and Visual Studio, Internet Explorer (IE), Microsoft Office, SharePoint Server, Open-Source Software, Hyper-V, Skype for Business and Microsoft Lync, and Exchange Server on May Patch Tuesday. Of these 55 bugs, four are rated as Critical in severity. The four critical CVEs to which attention should be paid are all remote code execution (RCE) vulnerabilities that could enable malicious actors to gain persistence on victim networks. These are CVE2021-26419, CVE-2021-31166, CVE-2021-31194, and CVE-2021- 28476


Microsoft has released an emergency out-of-band security update to address the critical zero-day vulnerability - known as "PrintNightmare", affecting the Windows Print Spooler service, which can permit remote threat actors to run arbitrary code and take over vulnerable systems. The PrintNightmare bug acknowledged by Microsoft post release of PoC exploits by several security researchers last week was tracked under CVE 2021-34527.


Security researchers at Eclypsium have discovered a series of four, high-severity vulnerabilities that can allow remote adversaries to gain arbitrary code execution in the pre-boot environment on Dell devices. The bugs affect 129 models of laptops, tablet and desktops, including enterprise and consumer devices, that are protected by Secure Boot, a security standard aimed at making sure that a device boots using only software that is trusted by the device original equipment manufacturer (OEM), to prevent rogue takeovers.


New windows malware Pingback uses Internet Control Message Protocol (ICMP) for its command-and-control activities to evade detection and DLL hijacking technique to achieve persistence in Operating system.


Attackers have been targeting a remote command execution vulnerability (CVE-2021-25296) in Nagios XI software to deploy cryptominer.


Threat actors behind the SolarMarker/Jupyter malware have started using PDF documents filled with search engine optimization (SEO) keywords to boost their visibility on search engines in order to lead potential victims to malware on a malicious site that poses as Google Drive. SolarMarker is a backdoor malware that pretends to be a legit PDFescape installer which steals data and credentials from browsers once installed.


Sextortion scam emails mislead victims into thinking that the attacker owns a recording of victim’s screen and camera and that recording contains images or videos of the victim in sexually explicit situations. The attackers use this claim of a recording to blackmail the victim into paying the attacker. The attacker threatens to publicly disclose the recording.


The vulnerability was patched in October 2020 as part of a security advisory released by Cisco to address multiple cross-site scripting (XSS) vulnerabilities in its Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) software web services. For the CVE-2020-3580, the initial patch was incomplete and a further fix was released in April 2021. On 24th June 2021, researchers published via twitter, a PoC exploit for the Cisco ASA vulnerability identified as CVE-2020-3580.


Attackers are targeting Zyxel security appliances with remote management or SSL VPN enabled in the USG/ZyWALL, USG FLEX, ATP, and VPN series. The threat actor attempts to access a device through WAN.


Microsoft released an update for a print spooler vulnerability as part of June Patch Tuesday tracking it under CVE-2021- 1675. On June 29, 2021, PoC exploit for another critical remote code execution (RCE) vulnerability in print spooler had been posted by security researchers. US CERT has raised an alert for this bug that has been named PrintNightmare.


Fortinet has recently addressed a high-severity vulnerability (CVE-2021-22123) affecting its FortiWeb web application firewall (WAF), a remote, authenticated attacker can exploit it to execute arbitrary commands via the SAML server


REvil ransomware gang has targeted several Managed Service Providers (MSPs) that are using the remote monitoring and management solution, Kaseya VSA via a supply chain attack. The attackers are exploiting a vulnerability present in Kaseya VSA and delivering payload by manipulating the patch distribution process.


Cisco fixes multiple critical flaws in SD-WAN vManage and HyperFlex HX software. If not patched, these vulnerabilities in Cisco networking device could allow unauthenticated attacker to perform command injection attacks, execute arbitrary code, gain access to sensitive information, escalate privileges, send unauthorized messages ,create new administrative level user accounts, executing commands as root user on affected systems.


Android fake application is capable of spreading itself via WhatsApp messages. If the user downloads the fake application and grants appropriate permissions, the malware is capable of automatically replying to victim’s incoming WhatsApp messages with a payload.


Microsoft released patches to fix critical and high Remote Code Execution vulnerabilities, CVE2021-28480, CVE-2021-28481 CVE-2021-28482 & CVE-2021- 28483 in Microsoft Exchange Server.


Pop-ups are generated by websites to offer users additional information or guidance, such as how to fill in a form or how to apply a discount code. However, some can be unwanted or even harmful - these are usually fake pop-ups.


The actively exploited vulnerability tracked as (CVE-2021-21972) allows attacker to upload files and execute commands without any authorized privileges.


Adobe patches multiple critical and important vulnerabilities including zero day CVE-2021-21017 for Adobe Acrobat and Reader for Windows and macOS. Successful exploitation could lead to arbitrary code execution in the context of the current user.


Microsoft has fixed two critical remote-code execution flaws in the TCP/IP implementation in Windows that could be exploited by network-based attackers to either gain control of a target system or cause a denial-of-service


One of the patched and actively exploited zero-day, tracked as 'CVE-2021-1732 - Windows Win32k Elevation of Privilege Vulnerability' allows an attacker or malicious program to elevate their privileges to administrative privileges.


Google Drive has become a new lure for scammers to phish unaware victims. A flaw in Google Drive is being exploited to send out seemingly legitimate emails and push notifications from Google that, if opened, redirects to malicious websites.


According to Oracle, the attack is “low” in complexity, requires no privileges and no user interaction and can be exploited by attackers with network access via HTTP.


Microsoft recently published a security patch addressing a remote code execution vulnerability in the IPv6 stack, known as CVE-2020- 16898 or "Bad Neighbor". The issue is caused by an improper handling of Router Advertisement messages, which are part of the Neighbor Discovery protocol.


Nearly 800,000 VPNs around the world need urgent patching after vendor (Dell SonicWall) issued a security update for a critical flaw last week.


Kraken Attack operators injects malicious payload into legitimate Microsoft Windows Error Reporting (WER) Service to evade detection.


A new malware family called Mozi, using several known malware families code– Gafgyt, Mirai and IoT Reaper have been brought together to form a peer-to-peer (P2P) botnet capable of DDoS attacks, data exfiltration and command or payload execution. 


Hackers are launching brute-force attacks on MSSQL servers to install a new crypto-mining malware MrbMiner.


The vulnerability, dubbed as “Zerologon,” is a critical severity, privilege-escalation vulnerability (CVE-2020-1472) assigned a CVSS score of 10 out of 10. The flaw was addressed in Microsoft’s August 2020 security updates.


Visa detected an advanced and unique E-skimming JavaScript based malware kit that is able to steal payment card data from ecommerce sites and uses anti-detection techniques to hide from security scanners.


Cryptojacking worm Cetus infects unsecured Docker daemons with XMRig cryptominer payload to mine monero.


FitzFrog botnet written in GOlang is using secure and encrypted Peer-to-Peer communication protocol to distribute malware and take control of device nodes. Encrypted communication makes the botnet difficult to detect and enables it to propagate across multiple infected SSH servers.


A high severity vulnerability, CVE 2020-13699, in TeamViewer could allow for offline password cracking when visiting malicious website.


The new “BootHole” vulnerability in the GRUB2 bootloader opens up Windows and Linux devices using Secure Boot to attack.

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