Technical Review: A Deep Analysis of the Dirty Pipe Vulnerability

Cloud Native Security Research Blog

Aqua Nautilus research team

SECURITY RESEARCH

Technical Review: A Deep Analysis of the Dirty Pipe Vulnerability

Dirty Pipe (CVE-2022-0847) proved that there is a new way to exploit Linux syscalls to write to files with a read-only privileges. The fact that someone can write to a file regardless of its permissions is a big security threat. An application of this vulnerability would be to write on the host from an unprivileged …

SECURITY RESEARCH

Aqua Nautilus Discovers Redigo — New Redis Backdoor Malware

Aqua Nautilus discovered new Go-based malware that targets Redis servers. The attack was executed against one of our deliberately vulnerable Redis honeypots (CVE-2022-0543). Our investigation revealed new undetected malware written in Golang designed to target Redis servers to allow the attacking server to dominate the compromised machine. Therefore, the malware received the name Redigo. In …

SECURITY RESEARCH

Updated Security Advisory: New OpenSSL Vulnerabilities

The OpenSSL project has pre-announced a new and critical severity vulnerability, which was downgraded to High as of today, Nov. 1, 2022. The initial pre-announcement blog has been updated here to reflect additional remediation guidance.

SECURITY RESEARCH

Text4Shell: CVE-2022-42889 in Apache Commons Text Explained

A new vulnerability in the Apache Commons Text library indicates that attackers can perform remote code execution (RCE). The media rushed to create hype around this vulnerability, comparing it to the infamous zero-day vulnerability Log4Shell, which emerged late last year and was broadly exploited by attackers. However, it’s too soon to say whether this new …

SECURITY RESEARCH

Threat Alert: Private npm Packages Disclosed via Timing Attacks

We at Aqua Nautilus have discovered that npm’s API allows threat actors to execute a timing attack that can detect whether private packages exist on the package manager. By creating a list of possible package names, threat actors can detect organizations’ scoped private packages and then masquerade public packages, tricking employees and users into downloading …

SECURITY RESEARCH

Threat Alert: New Malware in the Cloud By TeamTNT

Over the past week we observed three different attacks on our honeypots. The scripts and malware that were used bear a striking resemblance to none other than the threat actor TeamTNT. Eleven months ago they posted a farewell note on Twitter. Since then, we have only seen legacy attacks which automatically run on past infrastructure. …

SECURITY RESEARCH

Threat Alert: Phishing as a Service to Ramp Up Supply Chain Attacks

Threat actors are ramping up their game by deploying Phishing as a Service (PhaaS) to code and package managers (such as GitHub, PyPI, Ruby, NPM). This tactic circumvents Multi-Factor Authentication (MFA) mechanisms leading to session cookie hijacks and account takeovers. As we’ve learned in recent years, account takeovers of these applications lead to supply chain …

SECURITY RESEARCH

Detecting Drovorub’s File Operations Hooking with Tracee

Two years ago, the NSA (the United States’ National Security Agency) revealed that Drovorub, an advanced Russian malware created by the GRU 85th GTsSS team, had been discovered targeting Linux systems. Drovorub works by introducing advanced techniques which can manipulate the Linux operation system. It has an advanced kernel rootkit that hooks several kernel functions. In …

SECURITY RESEARCH

Threat Alert: Cloud Network Bandwidth Now Stolen through Cryptojacking

Threat actors are looking to increase their financial gain and thus deploy cryptominers which are considered easy to use and lucrative. Cryptomining involves complex calculations leading to high computation power and consequently increased CPU consumption and electricity (or cloud) bill. Aqua Nautilus found a new type of cryptomining attack in the wild. As far as …

SECURITY RESEARCH

Detecting and Capturing Kernel Modules with Tracee and eBPF

Security practitioners often need to investigate malicious artifacts in their environments, which can be challenging if those are deleted or loaded from memory. This is increasingly the case as threat actors are weaponizing Linux kernel modules to perform and hide their attacks. In this blog, we look into kernel modules and explain why they can …

SECURITY RESEARCH

CVE-2022-32223 Discovery: DLL Hijacking via npm CLI

Aqua Team Nautilus recently discovered that all Node.js versions earlier than 16.16.0 (LTS) and 14.20.0 on Windows are vulnerable to dynamic link library (DLL) hijacking if OpenSSL is installed on the host. Attackers can exploit this vulnerability to escalate their privileges and establish persistence in a target environment. The vulnerability can also provide another way …

SECURITY RESEARCH

8220 Gang Deploys a New Campaign with Upgraded Techniques

A recent campaign by the 8220 gang, who have been known to exploit the newly discovered critical Confluence vulnerability (CVE-2022-26134), targeted one of our honeypots. This campaign has evolved over time to deliberately target containers. In this game of cat and mouse, the threat actors used some new techniques, refurbishing the scripts from one attack …

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