Apple Issues Emergency Fix for NSO Zero-Click Zero Day

Apple users should immediately update all their devices – iPhones, iPads, Macs and Apple Watches – to install an emergency patch for a zero-click zero-day exploited by NSO Group to install spyware. The security updates, pushed out by Apple on Monday, include iOS 14.8 for iPhones and iPads, as wel...

WooCommerce Multi Currency Bug Allows Shoppers to Change eCommerce Pricing

A security vulnerability in the WooCommerce Multi Currency plugin could allow any customer to change the pricing for products in online stores. WooCommerce is a popular eCommerce plugin for WordPress-powered websites; the Multi Currency plugin from Envato meanwhile allows e-tailers using...

A week in security (Sept 6 – Sept 12)

Last week on Malwarebytes Labs Apple delays plans to search devices for child abuse imagery. ProtonMail hands user’s IP address and device info to police, showing the limits of private email. Patch now! Netgear fixes serious smart switch vulnerabilities. Tor vs VPN—What is the difference? Windows...

Zoho ManageEngine Password Manager Zero-Day Gets Fix

A critical security vulnerability in the Zoho ManageEngine ADSelfService Plus platform could allow remote attackers to bypass authentication and have free rein across users’ Active Directory AD and cloud accounts. The issue CVE-2021-40539 has been actively exploited in the wild as a zero-day,...

Talos release protection against zero-day vulnerability in Microsoft MSHTML

Cisco Talos released new SNORT® rules Thursday to protect against the exploitation of a zero-day vulnerability in Microsoft MSHTML that the company warns is being actively exploited in the wild. Users are encouraged to deploy SIDs 58120 – 58129, Snort 3 SID 300049 and ClamAV... This is only the...

Threat Source newsletter (Sept. 9, 2021)

Newsletter compiled by Jon Munshaw.Good afternoon, Talos readers. The biggest security news this week is no doubt another Microsoft zero-day. On the heels of PrintNightmare and multiple Exchange Server vulnerabilities comes a code execution vulnerability in MSHTML, the rendering engine... This is...

Russian Ransomware Group REvil Back Online After 2-Month Hiatus

The operators behind the REvil ransomware-as-a-service RaaS staged a surprise return after a two-month hiatus following the widely publicized attack on technology services provider Kaseya on July 4. Two of the dark web portals, including the gang's Happy Blog data leak site and its...

Microsoft, CISA Urge Mitigations for Zero-Day RCE Flaw in Windows

Both Microsoft and federal cybersecurity officials are urging organizations to use mitigations to combat a zero-day remote control execution RCE vulnerability in Windows that allows attackers to craft malicious Microsoft Office documents. Microsoft has not revealed much about the MSHTML bug,...

New 0-Day Attack Targeting Windows Users With Microsoft Office Documents

Microsoft on Tuesday warned of an actively exploited zero-day flaw impacting Internet Explorer that's being used to hijack vulnerable Windows systems by leveraging weaponized Office documents. Tracked as CVE-2021-40444 CVSS score: 8.8, the remote code execution flaw is rooted in MSHTML aka Triden...

Cisco Issues Patch for Critical Enterprise NFVIS Flaw — PoC Exploit Available

Cisco has patched a critical security vulnerability impacting its Enterprise Network Function Virtualization Infrastructure Software NFVIS that could be exploited by an attacker to take control of an affected system. Tracked as CVE-2021-34746, the weakness has been rated 9.8 out of a maximum of 1...

Cisco Patches Critical Bug With Public Exploit

Cisco has patched a near-max critical bug in its NFVIS software for which there’s a publicly available proof-of-concept PoC exploit. On Wednesday, Cisco released patches for the flaw – an authentication bypass vulnerability in Enterprise NFV Infrastructure Software NFVIS that’s tracked as...

Feds Warn of Ransomware Attacks Ahead of Labor Day

Though lots of people might be taking some time off over the Labor Day weekend, threat actors likely won’t — which means organizations should remain particularly vigilante about the potential for ransomware attacks, the federal government has warned. Citing historical precedence, the FBI and CISA...

Exploit for CVE-2021-33766

POC Exploit CVE-2021-33766 ProxyToken POC Exploit for CVE-...

Explanation of the zero-day attack

What is a zero-day vulnerability? A zero-day weakness is an obscure security weakness or programming blemish that a danger entertainer can focus with noxious code. The expression “Zero-Day” is utilized in light of the fact that the product merchant was uninformed of their product weakness, and...

New Microsoft Exchange 'ProxyToken' Flaw Lets Attackers Reconfigure Mailboxes

Details have emerged about a now-patched security vulnerability impacting Microsoft Exchange Server that could be weaponized by an unauthenticated attacker to modify server configurations, thus leading to the disclosure of Personally Identifiable Information PII. The issue, tracked as...

Delta Electronics DOPSoft (Update A)

1. EXECUTIVE SUMMARY CVSS v3 7.8 ATTENTION: Low attack complexity Vendor: Delta Electronics Equipment: DOPSoft Vulnerability: Stack-based Buffer Overflow 2. UPDATE INFORMATION This updated advisory is a follow-up to the original advisory titled ICSA-21-238-04 Delta Electronics DOPSoft that was...

Windows 10 Admin Rights Gobbled by Razer Devices

A zero-day bug in the device installer software for Razer peripherals – be they a Razer mouse, keyboard or any device that uses the Synapse utility – gives the plugger-inner full admin rights on Windows 10, just by inserting a compatible peripheral and downloading Synapse. There’s apparently...

CVE-2021-37660

CVE-2021-37660 describes a division-by-zero flaw in TensorFlow’s inplace operations due to a logic error in inplace_ops.cc. The faulty condition uses || instead of &&, allowing a floating-point exception when crafted inputs are provided. The issue has been patched in the GitHub commit e86605c0a33...

Microsoft Warns: Another Unpatched PrintNightmare Zero-Day

One day after dropping its scheduled August Patch Tuesday update, Microsoft issued a warning about yet another unpatched privilege escalation/remote code-execution RCE vulnerability in the Windows Print Spooler that can be filed under the PrintNightmare umbrella. The news comes amid plenty of...

IT threat evolution Q2 2021

Targeted attacks The leap of a Cycldek-related threat actor It is quite common for Chinese-speaking threat actors to share tools and methodologies: one such example is the infamous "DLL side-loading triad": a legitimate executable, a malicious DLL to be side-loaded by it and an encoded payload,...