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Hello 0-Days, My Old Friend: A 2024 Zero-Day Exploitation Analysis
Hello 0-Days, My Old Friend: A 2024 Zero-Day Exploitation Analysis
This Google Threat Intelligence Group report presents an analysis of detected 2024 zero-day exploits. Google Threat Intelligence Group (GTIG) tracked 75 zero-day vulnerabilities exploited in the wild in 2024, a decrease from the number we identified in 2023 (98 vulnerabilities), but still an increase from 2022 (63 vulnerabilities). We divided the reviewed vulnerabilities into two main categories: end-user platforms and products (e.g., mobile devices, operating systems, and browsers) and enterprise-focused technologies, such as security software and appliances. Vendors continue to drive improvements that make some zero-day exploitation harder, demonstrated by both dwindling numbers across multiple categories and reduced observed attacks against previously popular targets. At the same time, commercial surveillance vendors (CSVs) appear to be increasing their operational security practices, potentially leading to decreased attribution and detection. We see zero-day exploitation targeting a greater number and wider variety of enterprise-specific technologies, although these technologies still remain a smaller proportion of overall exploitation when compared to end-user technologies. While the historic focus on the exploitation of popular end-user technologies and their users continues, the shift toward increased targeting of enterprise-focused products will require a wider and more diverse set of vendors to increase proactive security measures in order to reduce future zero-day exploitation attempts.
·cloud.google.com·
Hello 0-Days, My Old Friend: A 2024 Zero-Day Exploitation Analysis
Malware trends: eBPF exploitation, malware configurations stored in unexpected places, and increased use of custom post-exploitation tools
Malware trends: eBPF exploitation, malware configurations stored in unexpected places, and increased use of custom post-exploitation tools
An investigation into an information security incident has allowed virus analysts at Doctor Web to uncover an ongoing campaign that incorporates many modern trends employed by cybercriminals.
·news.drweb.com·
Malware trends: eBPF exploitation, malware configurations stored in unexpected places, and increased use of custom post-exploitation tools
Attacker Abuses Victim Resources to Reap Rewards from Titan Network
Attacker Abuses Victim Resources to Reap Rewards from Titan Network
  • Trend Micro researchers observed an attacker exploiting the Atlassian Confluence vulnerability CVE-2023-22527 to achieve remote code execution for cryptomining via the Titan Network. The malicious actor used public IP lookup services and various system commands to gather details about the compromised machine. The attack involved downloading and executing multiple shell scripts to install Titan binaries and connect to the Titan Network with the attacker’s identity. * The malicious actor connects compromised machines to the Cassini Testnet, which allows them to participate in the delegated proof of stake system for reward tokens.
·trendmicro.com·
Attacker Abuses Victim Resources to Reap Rewards from Titan Network
Microsoft Says Windows Update Zero-Day Being Exploited to Undo Security Fixes
Microsoft Says Windows Update Zero-Day Being Exploited to Undo Security Fixes
Microsoft on Tuesday raised an alarm for in-the-wild exploitation of a critical flaw in Windows Update, warning that attackers are rolling back security fixes on certain versions of its flagship operating system.
·securityweek.com·
Microsoft Says Windows Update Zero-Day Being Exploited to Undo Security Fixes
Foxit PDF “Flawed Design” Exploitation
Foxit PDF “Flawed Design” Exploitation
PDF (Portable Document Format) files have become an integral part of modern digital communication. Renowned for their universality and fidelity, PDFs offer a robust platform for sharing documents across diverse computing environments. PDFs have evolved into a standard format for presenting text, images, and multimedia content with consistent layout and formatting, irrespective of the software, hardware, or operating system used to view them. This versatility has made PDFs indispensable in fields ranging from business and academia to government and personal use, serving as a reliable means of exchanging information in a structured and accessible manner.
·research.checkpoint.com·
Foxit PDF “Flawed Design” Exploitation
Zero-Day Exploitation of Unauthenticated Remote Code Execution Vulnerability in GlobalProtect (CVE-2024-3400)
Zero-Day Exploitation of Unauthenticated Remote Code Execution Vulnerability in GlobalProtect (CVE-2024-3400)
On April 10, 2024, Volexity identified zero-day exploitation of a vulnerability found within the GlobalProtect feature of Palo Alto Networks PAN-OS at one of its network security monitoring (NSM) customers. Volexity received alerts regarding suspect network traffic emanating from the customer’s firewall. A subsequent investigation determined the device had been compromised. The following day, April 11, 2024, Volexity observed further, identical exploitation at another one of its NSM customers by the same threat actor.
·volexity.com·
Zero-Day Exploitation of Unauthenticated Remote Code Execution Vulnerability in GlobalProtect (CVE-2024-3400)
research!rsc: The xz attack shell script
research!rsc: The xz attack shell script
Andres Freund published the existence of the xz attack on 2024-03-29 to the public oss-security@openwall mailing list. The day before, he alerted Debian security and the (private) distros@openwall list. In his mail, he says that he dug into this after “observing a few odd symptoms around liblzma (part of the xz package) on Debian sid installations over the last weeks (logins with ssh taking a lot of CPU, valgrind errors).” At a high level, the attack is split in two pieces: a shell script and an object file. There is an injection of shell code during configure, which injects the shell code into make. The shell code during make adds the object file to the build. This post examines the shell script. (See also my timeline post.)
·research.swtch.com·
research!rsc: The xz attack shell script
Flipping Pages: An analysis of a new Linux vulnerability in nf_tables and hardened exploitation techniques
Flipping Pages: An analysis of a new Linux vulnerability in nf_tables and hardened exploitation techniques
A tale about exploiting KernelCTF Mitigation, Debian, and Ubuntu instances with a double-free in nf_tables in the Linux kernel, using novel techniques like Dirty Pagedirectory. All without even having to recompile the exploit for different kernel targets once.
·pwning.tech·
Flipping Pages: An analysis of a new Linux vulnerability in nf_tables and hardened exploitation techniques
Two Bytes is Plenty: FortiGate RCE with CVE-2024-21762
Two Bytes is Plenty: FortiGate RCE with CVE-2024-21762
Early this February, Fortinet released an advisory for an "out-of-bounds write vulnerability" that could lead to remote code execution. The issue affected the SSL VPN component of their FortiGate network appliance and was potentially already being exploited in the wild. In this post we detail the steps we took to identify the patched vulnerability and produce a working exploit.
·assetnote.io·
Two Bytes is Plenty: FortiGate RCE with CVE-2024-21762
Ivanti Connect Secure VPN Exploitation Goes Global
Ivanti Connect Secure VPN Exploitation Goes Global
On January 10, 2024, Volexity publicly shared details of targeted attacks by UTA00178 exploiting two zero-day vulnerabilities (CVE-2024-21887 and CVE-2023-46805) in Ivanti Connect Secure (ICS) VPN appliances. On the same day, Ivanti published a mitigation that could be applied to ICS VPN appliances to prevent exploitation of these vulnerabilities. Since publication of these details, Volexity has continued to monitor its existing customers for exploitation. Volexity has also been contacted by multiple organizations that saw signs of compromise by way of mismatched file detections. Volexity has been actively working multiple new cases of organizations with compromised ICS VPN appliances.
·volexity.com·
Ivanti Connect Secure VPN Exploitation Goes Global