Security | Threat Detection | Cyberattacks | DevSecOps | Compliance

What do Linux vulnerabilities and natural disasters have in common? Something seemingly dormant can suddenly spring to life, exposing activity beneath the surface. Several days ago, a security researcher published a high-severity vulnerability named PwnKit that impacts most major Linux distributions. The scary part? It’s existed since May of 2009. Polkit is a component for controlling privileges in Unix-like operating systems and is included by default on most major Linux distributions.

On January 25, 2022, Qualys announced the discovery of a local privilege escalation vulnerability that it identified as PwnKit. The PwnKit vulnerability affects PolicyKit’s pkexec, a SUID-root program installed by default on many Linux distributions. The same day of the announcement, a proof of concept (PoC) exploit was built and published by the security research community.

Privileged Access Management (PAM) is a go-to solution to prevent privilege misuse and insider threats, and limit malware propagation. After all, properly protecting and monitoring the keys to the kingdom is always a good practice. Privileged Access Management has been even more critical in recent times. With the advent of the cloud where infrastructure is provisioned with a single API call and authenticated with a single API key, the risk of someone misusing these credentials is far higher.

A core challenge for threat detection engineering is reproducing common attacker behavior. Several open source and commercial projects exist for traditional endpoint and on-premise security, but there is a clear need for a cloud-native tool built with cloud providers and infrastructure in mind. To meet this growing demand, we’re happy to announce Stratus Red Team, an open source project created to emulate common attack techniques directly in your cloud environment.

Since 2009, more than 12 years ago, all major Linux distributions have been incorporating a high severity security hole that remained unnoticed until just recently. The vulnerability and exploit, dubbed “PwnKit” (CVE-2021-4034), uses the vulnerable “pkexec” tool, and allows a local user to gain root system privileges on the affected host. Polkit (formerly PolicyKit) is a component for controlling system-wide privileges in Unix-like operating systems.