Mitigating High Severity CVEs Affecting SaltStack on Public Clouds

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SECURITY RESEARCH

Mitigating High Severity CVEs Affecting SaltStack on Public Clouds

CVE-2020-11651/11652

Two high-severity CVEs in the SaltStack platform were published last week by researchers at F-Secure. These vulnerabilities can enable remote code execution (RCE), which lets attackers remotely execute commands on the Salt leader node. This results in a full compromise of the host and can expose sensitive information within the cloud environment. To address this, …

SECURITY RESEARCH

Threat Alert: Kinsing Malware Attacks Targeting Container Environments

Lately we’ve been witnessing a rise in the number of attacks that target container environments. We’ve been tracking an organized attack campaign that targets misconfigured open Docker Daemon API ports. This persistent campaign has been going on for months, with thousands of attempts taking place nearly on a daily basis. These are the highest numbers …

SECURITY RESEARCH

Threat Alert: Attack Vector Uses Containers to Methodically Target Cloud Resources

The Aqua Research team has identified a new attack vector that points to an evolution in attacks’ techniques and capabilities. In these attacks, the attackers leverage containers as an entry point to discover and spread to other resources used within cloud accounts. The attackers deployed a clean Ubuntu container, mounted the host file system, which …

SECURITY RESEARCH

Threat Alert: Exploiting Open Docker Daemons for DDoS Attacks

Aqua’s research team continuously investigates and analyzes the anatomy of new attacks in the wild. Recently, we identified attacks that exploited misconfigured open Docker daemons, where attackers were actively using this attack vector to hijack environments in order to launch targeted DDoS attacks. Each of the attacks were carried out using a botnet of containers, …

SECURITY RESEARCH

Maneuver Docker API for Host Takeover

Docker clients can communicate with the daemon either locally, via a unix socket, or over a network via a TCP socket. Aqua’s research team discovered an interesting attack vector running on top of an unsecured Docker socket API. Instead of running a malicious Docker image, the attacker changes the traditional entry-point to take control over …

SECURITY RESEARCH

CVE-2019-14287 sudo Vulnerability Allows Bypass of User Restrictions

A new vulnerability was discovered earlier this week in the sudo package. Sudo is one of the most powerful and commonly used utilities installed on almost every UNIX and Linux-based operating system.

SECURITY RESEARCH

DNS Spoofing on Kubernetes Clusters

In this post I’ll describe how an attacker, who manages to run malicious code on a cluster can, with no special permissive permissions, successfully spoof DNS responses to all the applications running on the cluster, and from there execute a MITM (Man In The Middle) on all network traffic of pods.

SECURITY RESEARCH

Kubernetes Pod Escape Using Log Mounts

Kubernetes has many moving parts, and sometimes combining them in certain ways can create unexpected security flaws. In this post you’ll see how a pod running as root and with a mount point to the node’s /var/log directory can expose the entire contents of its host filesystem to any user who has access to its …

SECURITY RESEARCH

Crypto-Mining Malware Outsmarting Image Scanners

In previous crypto-mining attacks, we observed hackers investing little to no effort in hiding their malicious activities. They just ran the malicious container with all of its scripts and configuration files in clear text. This made the analysis of their malicious intent fairly easy.

SECURITY RESEARCH

CVE-2019-11246: Another kubectl Path Traversal Vulnerability Disclosed

A new vulnerability (CVE-2019-11246) was disclosed that enables path traversal in kubectl, the popular command line interface for running commands on Kubernetes clusters. What’s interesting about this CVE is that we’ve already seen two previous variations of the same vulnerability disclosed and patched. Read on to learn how that happened.

SECURITY RESEARCH

CVE-2019-5021: Alpine Docker Image ‘null root password’ Vulnerability

A new vulnerability that impacts Alpine Docker images was published last week. The vulnerability is due to the ‘root’ user password which is set, by default, to NULL on Alpine Docker images from version 3.3 or higher.

SECURITY RESEARCH

Mitigating High Severity RunC Vulnerability (CVE-2019-5736)

Yesterday it was disclosed that a new high severity (CVSS score 7.2) vulnerability (CVE-2019-5736) was found in runc, that allows an attacker to potentially compromise the container host. Patches are already available from most providers (see below). Aqua customers can also prevent this vulnerability from being exploited by applying the appropriate runtime policies.

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