CVE-2021-3156 sudo Vulnerability Allows Root Privileges

Cloud Native Security Research Blog

Aqua Nautilus research team

SECURITY RESEARCH

CVE-2021-3156 sudo Vulnerability Allows Root Privileges

A new severe vulnerability was found in Unix and Linux operating systems that allows an unprivileged user to exploit this vulnerability using sudo, causing a heap overflow to elevate privileges to root without authentication, or even get listed in the sudoers file. In this blog, I’ll go over how this CVE can be exploited, what …

SECURITY RESEARCH

Aqua’s Top Five Threat Alerts for 2020

It has certainly been a rough year and just as life constantly evolves, so do cyber threats. So, here are a few blogs by our cyber security research group, Team Nautilus, that got the most attention from cloud native security professionals. These blogs highlight how attackers continue to get more creative over time, as we …

AQUA OPEN SOURCE, SECURITY RESEARCH

CVE-2020-15275: New Vulnerability Exploits containerd-shim API

A year of challenges isn’t quite over yet, as a new vulnerability was found in containerd, CVE-2020-15257. When exploited, after providing a connection through the container to the host network, an attacker can gain root privileges on the host. This vulnerability was disclosed by Jeff Dileo of NCC Group, our investigation by Team Nautilus is …

SECURITY RESEARCH

Threat Alert: Fileless Malware Executing in Containers

Security Threat

Our cyber research team detected a new type of attack that executes and runs malware straight from memory in containers, thus evading common defenses and static scanning. This malware is using a rootkit to hide its running processes, then hijacks resources by executing a crypto miner from memory — leaving a backdoor that enables attackers …

SECURITY RESEARCH

Threat Alert: Market-First Container Image Built to Attack Kubernetes Clusters

Aqua’s Team Nautilus has uncovered a container image that, for the first time, allows bad actors to find and exploit vulnerabilities in Kubernetes clusters. The attackers propagate this malware through a Docker Hub lookalike account intended to dupe developers into downloading malicious images. To the best of our knowledge, this is the first known case …

SECURITY RESEARCH

Vulnerability in Containerd Can Leak Cloud Credentials

A new vulnerability was found in containerd, located in the container image-pulling process. The new CVE includes manipulation of the image manifest, allowing attackers to craft an image that can leak the host’s registry or cloud credentials when pulled from a registry. This leak occurs even before the image is running any code on your …

SECURITY RESEARCH

Threat Alert: TeamTNT is Back and Attacking Vulnerable Redis Servers

Over the past few weeks, TeamTNT grabbed headlines after launching several novel attacks against cloud native infrastructure. In response, Docker Hub decided to remove TeamTNT’s malicious images from its community and deleted the user ‘Hildeteamtnt.’ But just a few days later, TeamTNT reemerged with a catchy logo “Still alive” embedded in their scripts (although “still …

SECURITY RESEARCH

Threat Alert: Massive Cryptomining Campaign Abusing GitHub, Docker Hub, Travis CI & Circle CI

Aqua’s Team Nautilus detected an impressive campaign that set out to hijack resources to enable cryptocurrency mining. This operation focused on several SaaS software development environments, including Docker Hub, GitHub, Travis CI, and Circle CI, by abusing their automated build processes.

SECURITY RESEARCH

Deep Analysis of TeamTNT Techniques Using Container Images to Attack

Ever notice how news about hidden malware almost always focuses on remediation AFTER the fact? So did we. Even now, there’s yet another news story about a rash of attacks by a group called TeamTNT. They used a crypto-mining worm to steal AWS credentials from Docker Hub. Well, if hijacking cloud resources is so popular, …

AQUA OPEN SOURCE, SECURITY RESEARCH

Uncover Malware Payload Executions Automatically with Tracee

We have some exciting news about two new features in Tracee, Aqua’s open source container and system tracing utility. Now, Tracee is much more than just a system call tracer, it’s a powerful tool that can be used to perform forensic investigations and dynamic analysis of binaries – both are incredibly useful when looking for hidden malware. Tracee can provide users with timely insights that previously required special knowledge and tools.

SECURITY RESEARCH

Threat Alert: Attackers Building Malicious Images Directly on Your Host

We at Team Nautilus – Aqua’s cyber security research team – discovered a new type of attack against container infrastructure. The attacker exploits a misconfigured Docker API port in order to build and run a malicious container image on the host. As far as we know, this is the first time that an attack in …

SECURITY RESEARCH

Threat Alert: An Attack Against a Docker API Leads To Hidden Cryptominers

Following an attack against a misconfigured Docker API port, the research team at Aqua Security performed an in-depth examination of the Docker Hub account from which the image was pulled. The examination was done by dynamically scanning for hidden threats in the container images hosted in that specific Docker Hub account (ubuntuz) and comparing them …

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Aqua Security is the pioneer in securing containerized cloud native applications from development to production. Aqua's full lifecycle solution prevents attacks by enforcing pre-deployment hygiene and mitigates attacks in real time in production, reducing mean time to repair and overall business risk. The Aqua Platform, a Cloud Native Application Protection Platform (CNAPP), integrates security from Code to Cloud, combining the power of agent and agentless technology into a single solution. With enterprise scale that doesn’t slow development pipelines, Aqua secures your future in the cloud. Founded in 2015, Aqua is headquartered in Boston, MA and Ramat Gan, IL protecting over 500 of the world’s largest enterprises.

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