GitLab: Container escape on public GitLab CI runners

Summary It is possible to circumvent the isolation in place for build jobs running on public CI runners by escaping the docker container running the build job. This is possible via abuse of the cgroup releaseagent functionality, made possible by CI jobs being allowed to mount filesystems inside t...

Exploit for OS Command Injection in Docker

CVE-2019-5736 is a container escape vulnerability in Docker. The exploit works by overwriting and executing the host system's runc binary from within the container. The vulnerability allows an attacker to gain root access on the host system. The exploit is implemented in Go and consists of two us...

Public Clouds & Shared Responsibility: Lessons from Vulnerability Disclosure

The inexorable movement of data and applications to the cloud that began several years ago and accelerated during the pandemic shows no signs of slowing down. The rationale for this transformation is driven by a desire to outsource non-critical functions building and maintaining data centers,...

Exploit for OS Command Injection in Docker

CVE-2019-5736 is a vulnerability in the runc container runtime that allows for container escape. The exploit works by overwriting the runc binary with a malicious payload, which is achieved by modifying the /bin/sh file in the container to point to the runc binary on the host. The attacker can th...

Cisco Firepower Threat Defense Software Multi-Instance Container Escape (cisco-sa-ftd-container-esc-FmYqFBQV)

According to its self-reported version, Cisco Firepower Threat Defense Software is affected by a vulnerability in the multi-instance feature that allows an authenticated, local attacker to escape the container for their Cisco FTD instance and execute commands with root privileges in the host...

runc: vulnerable to symlink exchange attack

The runc package is vulnerable to a symlink exchange attack whereby an attacker can request a seemingly innocuous container configuration that results in the host filesystem being bind-mounted into the container. The highest threat from this vulnerability is to data confidentiality and integrity ...

Metasploit Wrap-Up

Containers that fail to Contain Our own Christophe De La Fuente added a module for CVE-2019-5736 based on the work of Adam Iwaniuk that breaks out of a Docker container by overwriting the runc binary of an image which is run in the user context whenever someone outside the container runs docker...

Docker Container Escape

This module requires Metasploit: https://metasploit.com/download Current source: https://github.com/rapid7/metasploit-framework class MetasploitModule 'Docker Container Escape Via runC Overwrite', 'Description' = %q This module leverages a flaw in runc to escape a Docker container and get command...

Metarget - Framework Providing Automatic Constructions Of Vulnerable Infrastructures

1 Introduction Metarget = meta- + target, a framework providing automatic constructions of vulnerable infrastructures, used to deploy simple or complicated vulnerable cloud native targets swiftly and automatically. 1.1 Why Metarget? During security researches, we might find that the deployment of...

Security Bulletin: IBM Cloud Kubernetes Service is affected by a containerd security vulnerability (CVE-2021-30465)

Summary IBM Cloud Kubernetes Service is affected by a security vulnerability found in containerd that could allow certain container configuration requests to actually result in the host filesystem being bind-mounted into the container allowing for a container escape CVE-2021-30465. Vulnerability...

GHSA-C3XM-PVG7-GH7R mount destinations can be swapped via symlink-exchange to cause mounts outside the rootfs

Summary runc 1.0.0-rc94 and earlier are vulnerable to a symlink exchange attack whereby an attacker can request a seemingly-innocuous container configuration that actually results in the host filesystem being bind-mounted into the container allowing for a container escape. CVE-2021-30465 has been...

mount destinations can be swapped via symlink-exchange to cause mounts outside the rootfs

Summary runc 1.0.0-rc94 and earlier are vulnerable to a symlink exchange attack whereby an attacker can request a seemingly-innocuous container configuration that actually results in the host filesystem being bind-mounted into the container allowing for a container escape. CVE-2021-30465 has been...

[ASA-202105-17] runc: sandbox escape

Arch Linux Security Advisory ASA-202105-17 ========================================== Severity: High Date : 2021-05-25 CVE-ID : CVE-2021-30465 Package : runc Type : sandbox escape Remote : No Link : https://security.archlinux.org/AVG-1972 Summary ======= The package runc before version 1.0.0rc95-...

Symlink Attack

github.com/opencontainers/runc is vulnerable to symlink attack. An attacker, with the ability to start containers using some kind of custom volume configuration, can request a seemingly-innocuous container configuration that results in the host file system being bind-mounted into the container,...

New Docker Container Escape Bug Affects Microsoft Azure Functions

Cybersecurity researcher Paul Litvak today disclosed an unpatched vulnerability in Microsoft Azure Functions that could be used by an attacker to escalate privileges and escape the Docker container used for hosting them. The findings come as part of Intezer Lab's investigations into the Azure...

CVE-2020-3514

A vulnerability in the multi-instance feature of Cisco Firepower Threat Defense FTD Software could allow an authenticated, local attacker to escape the container for their Cisco FTD instance and execute commands with root privileges in the host namespace. The attacker must have valid credentials ...

Design/Logic Flaw

A vulnerability in the multi-instance feature of Cisco Firepower Threat Defense FTD Software could allow an authenticated, local attacker to escape the container for their Cisco FTD instance and execute commands with root privileges in the host namespace. The attacker must have valid credentials ...

CVE-2020-3514 Cisco Firepower Threat Defense Software Multi-Instance Container Escape Vulnerability

A vulnerability in the multi-instance feature of Cisco Firepower Threat Defense FTD Software could allow an authenticated, local attacker to escape the container for their Cisco FTD instance and execute commands with root privileges in the host namespace. The attacker must have valid credentials ...

CVE-2020-3514 Cisco Firepower Threat Defense Software Multi-Instance Container Escape Vulnerability

A vulnerability in the multi-instance feature of Cisco Firepower Threat Defense FTD Software could allow an authenticated, local attacker to escape the container for their Cisco FTD instance and execute commands with root privileges in the host namespace. The attacker must have valid credentials ...

Cisco Firepower Threat Defense Software Multi-Instance Container Escape Vulnerability

A vulnerability in the multi-instance feature of Cisco Firepower Threat Defense FTD Software could allow an authenticated, local attacker to escape the container for their Cisco FTD instance and execute commands with root privileges in the host namespace. The attacker must have valid credentials ...