Cisco warns of actively exploited IOS XR zero-days
Cisco warned on Saturday about two zero-day vulnerability impacting the Internetwork Operating System (IOS) that ships with its networking equipment.
New Chrome 0-day Under Active Attacks – Update Your Browser Now
Attention readers, if you are using Google Chrome browser on your Windows, Mac, or Linux computers, you need to update your web browsing software immediately to the latest version Google released earlier today.
Google Warns of Zero-Click Bluetooth Flaws in Linux-based Devices
Google security researchers are warning of a new set of zero-click vulnerabilities in the Linux Bluetooth software stack that can allow a nearby unauthenticated, remote attacker to execute arbitrary code with kernel privileges on vulnerable devices.
India Witnessed Spike in Cyber Attacks Amidst Covid-19 - Here's Why?
The COVID-19 outreach is turning out to be not only health, social, and economic hazard but also a cybersecurity crisis. The pandemic has presented new challenges for businesses in the areas of remote collaboration and business continuity.
FIN11 Hackers Spotted Using New Techniques In Ransomware Attacks
A financially-motivated threat actor known for its malware distribution campaigns has evolved its tactics to focus on ransomware and extortion. "Recent FIN11 intrusions have most commonly led to data theft, extortion and the disruption of victim networks via the distribution of CLOP ransomware".
Microsoft Releases Patches For Critical Windows TCP/IP and Other Bugs
Microsoft on Tuesday issued fixes for 87 newly discovered security vulnerabilities as part of its October 2020 Patch Tuesday, including two critical remote code execution (RCE) flaws in Windows TCP/IP stack and Microsoft Outlook.
Watch Out — Microsoft Warns Android Users About A New Ransomware
Microsoft has warned about a new strain of mobile ransomware that takes advantage of incoming call notifications and Android's Home button to lock the device behind a ransom note.
Researchers Find Vulnerabilities in Microsoft Azure Cloud Service
As businesses are increasingly migrating to the cloud, securing the infrastructure has never been more important. Now according to the latest research, two security flaws in Microsoft's Azure App Services could have enabled a bad actor to carry out server-side request forgery (SSRF) attacks or execute arbitrary code and take over the administration server.
Google Researcher Reported 3 Flaws in Apache Web Server Software
If your web-server runs on Apache, you should immediately install the latest available version of the server application to prevent hackers from taking unauthorized control over it.
Two Critical Flaws in Zoom Could've Let Attackers Hack Systems via Chat
If you're using Zoom—especially during this challenging time to cope with your schooling, business, or social engagement—make sure you are running the latest version of the widely popular video conferencing software on your Windows, macOS, or Linux computers.
New Zoom Hack Lets Hackers Compromise Windows and Its Login Password
Zoom has been there for nine years, but the immediate requirement of an easy-to-use video conferencing app during the coronavirus pandemic overnight made it one of the most favorite communication tool for millions of people around the globe.
No doubt, Zoom is an efficient online video meeting solution that's helping people stay socially connected during these unprecedented times, but it's still not the best choice for everyone—especially those who really care about their privacy and security.
According to cybersecurity expert @_g0dmode, the Zoom video conferencing software for Windows is vulnerable to a classic 'UNC path injection' vulnerability that could allow remote attackers to steal victims' Windows login credentials and even execute arbitrary commands on their systems.
Such attacks are possible because Zoom for Windows supports remote UNC paths that convert potentially insecure URIs into hyperlinks when received via chat messages to a recipient in a personal or group chat.
Hacking Zoom to Steal Windows Passwords Remotely
Confirmed by researcher Matthew Hickey and demonstrated by Mohamed Baset, the first attack scenario involves the SMBRelay technique that exploits the fact that Windows automatically exposes a user's login username and NTLM password hashes to a remote SMB server when attempting to connect and download a file hosted on it.
To steal Windows login credentials of a targeted user, all an attacker needs to do is sent a crafted URL (i.e., \\x.x.x.x\abc_file) to a victim via a chat interface.
Once clicked, the attack would eventually allow the attacker-controlled SMB share to automatically capture authentication data from Windows, without the knowledge of the targeted user.
To be noted, the captured passwords are not plaintext; instead, NTLM hashes of them, but a weak one can easily be cracked in seconds using password cracking tools like HashCat or John the Ripper.
In a shared environment, like office space, stolen Windows login credentials can be reused immediately to compromise other users or IT resources, and launch further attacks.
Exploiting Zoom to Compromise Windows Systems Remotely
Besides stealing Windows credentials, the flaw can also be exploited to launch any program already present on a targeted computer or execute arbitrary commands to compromise it remotely, confirmed by Google security researcher Tavis Ormandy.
As shown, Ormandy demonstrated that the UNC path injection flaw in Zoom can also be exploited to run a batch script—without a prompt—containing malicious commands when called from the Windows default download directory.
The second attack scenario relies on the fact that browsers running on Windows operating system automatically save downloaded in a default folder, which can be abused to first trick a user into downloading the batch script and then triggering it using the zoom bug.
To be noted, to exploit this issue, an attacker must be aware of the Windows username for the targeted user, which, however, can easily be obtained using the first SMBRelay attack.
What Should Zoom Users Do?
Zoom has already been notified of this bug, but since the flaw has not yet been patched, users are advised to either use an alternative video conferencing software or Zoom in their web browsers instead of installing a dedicated client app on their systems.
Some of the best alternative video conferencing and chat software are:
Skype & Microsoft Teams (up to 50 participants)
Google Hangouts Meet and Google Duo (up to 250 participants)
Jitsi (free, encrypted, open source, up to 75 participants)
FBesides using a strong password, Windows users can also change the security policy settings to restrict the operating system from automatically passing their NTML credentials to a remote SMB server.
More Zoom-related Security and Privacy Incidents
This is not the only issue to have been uncovered in Zoom video conferencing software over the past couple of days, raising privacy and security concerns among millions of users.
The FBI is warning zoom users of the "Zoom-Bombing" attack after some people find a way to sneak their way into unsuspecting meetings and online gatherings and bombarded them with pornographic images or racist comments.
Just yesterday, another report confirmed that Zoom doesn't use end-to-end encryption to protect calling data of its users from prying eyes despite telling users that "Zoom is using an end to end encrypted connection."
Last week, Zoom updated its iOS app after it was caught sharing users' device information with Facebook, raising legitimate concerns over users' privacy.
Earlier this year, Zoom also patched another privacy bug in its software that could have let uninvited people join private meetings and remotely eavesdrop on private audio, video, and documents shared throughout the session.aceTime and Signal for privacy