As the creator of the world’s first smart home cybersecurity hub, Bitdefender regularly audits popular IoT hardware for vulnerabilities. This research paper is part of a broader program that aims to shed light on the security of the world’s best-sellers in the IoT space. This report covers vulnerabilities discovered while researching the LG WebOS TV operating system.
Over 92,000 exposed D-Link NAS devices have a backdoor account
A threat researcher has disclosed a new arbitrary command injection and hardcoded backdoor flaw in multiple end-of-life D-Link Network Attached Storage (NAS) device models.
Bringing process injection into view(s): exploiting all macOS apps using nib files · Sector 7
In a previous blog post we described a process injection vulnerability affecting all AppKit-based macOS applications. This research was presented at Black Hat USA 2022, DEF CON 30 and Objective by the Sea v5. This vulnerability was actually the second universal process injection vulnerability we reported to Apple, but it was fixed earlier than the first. Because it shared some parts of the exploit chain with the first one, there were a few steps we had to skip in the earlier post and the presentations. Now that the first vulnerability has been fixed in macOS 13.0 (Ventura) and improved in macOS 14.0 (Sonoma), we can detail the first one and thereby fill in the blanks of the previous post. This vulnerability was independently found by Adam Chester and written up here under the name “DirtyNIB”. While the exploit chain demonstrated by Adam shares a lot of similarity to ours, our attacks trigger automatically and do not require a user to click a button, making them a lot more stealthy. Therefore we decided to publish our own version of this write-up as well.
Security Flaw in WP-Members Plugin Leads to Script Injection
Attackers could exploit a high-severity cross-site Scripting (XSS) vulnerability in the WP-Members Membership WordPress plugin to inject arbitrary scripts into web pages, according to an advisory from security firm Defiant.
On September 25, 2022, CVE-2022-41352 was filed for Zimbra Collaboration Suite. The vulnerability is a remote code execution flaw that arises from unsafe usage…
CVE-2022-35650 The vulnerability was found in Moodle, occurs due to input validation error when importing lesson questions. This insufficient path checks results in arbitrary file read risk. This vulnerability allows a remote attacker to perform directory traversal attacks. The capability to access this feature is only available to teachers, managers and admins by default.
Zimbra Email - Stealing Clear-Text Credentials via Memcache injection
We discovered flaws in Zimbra, an enterprise email solution, that allow attackers to steal credentials of users and gain access to their email accounts.
Exploiting an Unbounded memcpy in Parallels Desktop
This post details the development of a guest-to-host virtualization escape for Parallels Desktop on macOS, as used in our successful Pwn2Own 2021 entry. Give...
At the start of 2022, CrowdStrike Intelligence and CrowdStrike Services investigated an incident in which PROPHET SPIDER exploited CVE-2021-22941 — a remote code execution (RCE) vulnerability impacting Citrix ShareFile Storage Zones Controller — to compromise a Microsoft Internet Information Services (IIS) web server. The adversary exploited the vulnerability to deploy a webshell that enabled the downloading of additional tools. This incident highlights how PROPHET SPIDER continues to evolve their tradecraft while continuing to exploit known web-server vulnerabilities.
The Dirty Pipe Vulnerability — The Dirty Pipe Vulnerability documentation
This is the story of CVE-2022-0847, a vulnerability in the Linux kernel since 5.8 which allows overwriting data in arbitrary read-only files. This leads to privilege escalation because unprivileged processes can inject code into root processes. It is similar to CVE-2016-5195 “Dirty Cow” but is easier to exploit. The vulnerability was fixed in Linux 5.16.11, 5.15.25 and 5.10.102.
Loop DoS: New Denial-of-Service attack targets application-layer protocols
A new Denial-of-Service (DoS) attack targets application-layer protocols that draw on the User Datagram Protocol (UDP) for end-to-end communication. The vulnerability affects both legacy and contemporary protocols. Discovered by Christian Rossow and Yepeng Pan, the attack puts an estimated 300,000 Internet hosts and their networks at risk.
What a Cluster: Local Volumes Vulnerability in Kubernetes
Akamai security researcher Tomer Peled recently discovered a high-severity vulnerability in Kubernetes that was assigned CVE-2023-5528 with a CVSS score of 7.2. The vulnerability allows remote code execution with SYSTEM privileges on all Windows endpoints within a Kubernetes cluster. To exploit this vulnerability, the attacker needs to apply malicious YAML files on the cluster. This vulnerability can lead to full takeover on all Windows nodes in a cluster. This vulnerability can be exploited on default installations of Kubernetes (earlier than version 1.28.4), and was tested against both on-prem deployments and Azure Kubernetes Service. In this blog post, we provide a proof-of-concept YAML file as well as an Open Policy Agent (OPA) rule for blocking this vulnerability.
Magnet Goblin Targets Publicly Facing Servers Using 1-Day Vulnerabilities
Magnet Goblin is a financially motivated threat actor that quickly adopts and leverages 1-day vulnerabilities in public-facing services as an initial infection vector. At least in one case of Ivanti Connect Secure VPN (CVE-2024-21887), the exploit entered the group’s arsenal as fast as within 1 day after a POC for it was published. Campaigns that we were able to attribute to this actor targeted Ivanti, Magento, Qlink Sense and possibly Apache ActiveMQ. Analysis of the actor’s recent Ivanti Connect Secure VPN campaign revealed a novel Linux version of a malware called NerbianRAT, in addition to WARPWIRE, a JavaScript credential stealer. * The actor’s arsenal also includes MiniNerbian, a small Linux backdoor, and remote monitoring and management (RMM) tools for Windows like ScreenConnect and AnyDesk.
Lazarus and the FudModule Rootkit: Beyond BYOVD with an Admin-to-Kernel Zero-Day - Avast Threat Labs
The Lazarus Group is back with an upgraded variant of their FudModule rootkit, this time enabled by a zero-day admin-to-kernel vulnerability for CVE-2024-21338. Read this blog for a detailed analysis of this rootkit variant and learn more about several new techniques, including a handle table entry manipulation technique that directly targets Microsoft Defender, CrowdStrike Falcon, and HitmanPro.
Serious Vulnerability in the Internet Infrastructure Fundamental design flaw in DNSSEC discovered
he National Research Center for Applied Cybersecurity ATHENE has uncovered a critical flaw in the design of DNSSEC, the Security Extensions of DNS (Domain Name System). DNS is one of the fundamental building blocks of the Internet. The design flaw has devastating consequences for essentially all DNSSEC-validating DNS implementations and public DNS providers, such as Google and Cloudflare. The ATHENE team, led by Prof. Dr. Haya Schulmann from Goethe University Frankfurt, developed “KeyTrap”, a new class of attacks: with just a single DNS packet hackers could stall all widely used DNS implementations and public DNS providers. Exploitation of this attack would have severe consequences for any application using the Internet including unavailability of technologies such as web-browsing, e-mail, and instant messaging. With KeyTrap, an attacker could completely disable large parts of the worldwide Internet. The researchers worked with all relevant vendors and major public DNS providers over several months, resulting in a number of vendor-specific patches, the last ones published on Tuesday, February 13. It is highly recommended for all providers of DNS services to apply these patches immediately to mitigate this critical vulnerability.
On September 25, 2022, CVE-2022-41352 was filed for Zimbra Collaboration Suite. The vulnerability is a remote code execution flaw that arises from unsafe usage…
CVE-2022-35650 The vulnerability was found in Moodle, occurs due to input validation error when importing lesson questions. This insufficient path checks results in arbitrary file read risk. This vulnerability allows a remote attacker to perform directory traversal attacks. The capability to access this feature is only available to teachers, managers and admins by default.
Zimbra Email - Stealing Clear-Text Credentials via Memcache injection
We discovered flaws in Zimbra, an enterprise email solution, that allow attackers to steal credentials of users and gain access to their email accounts.
Exploiting an Unbounded memcpy in Parallels Desktop
This post details the development of a guest-to-host virtualization escape for Parallels Desktop on macOS, as used in our successful Pwn2Own 2021 entry. Give...
At the start of 2022, CrowdStrike Intelligence and CrowdStrike Services investigated an incident in which PROPHET SPIDER exploited CVE-2021-22941 — a remote code execution (RCE) vulnerability impacting Citrix ShareFile Storage Zones Controller — to compromise a Microsoft Internet Information Services (IIS) web server. The adversary exploited the vulnerability to deploy a webshell that enabled the downloading of additional tools. This incident highlights how PROPHET SPIDER continues to evolve their tradecraft while continuing to exploit known web-server vulnerabilities.
