RSAC 2019: Container Escape Hack Targets Vulnerable Linux Kernel

Researchers at CyberArk have created a proof-of-concept attack that allows adversaries to bypass container security, escape the container and compromise an entire host system. However, the attack scenario is limited, in that a successful attack depends on unpatched vulnerabilities to be present i...

Kicking the Rims – A Guide for Securely Writing and Auditing Chrome Extensions

Table of Contents A Thin Layer of Chrome Extension Security Prior-Art Isolated But Talkative Worlds A Quick Disclaimer Home is Where the manifest.json Is - The Basic Extension Layout The Extension Architecture, Namespace Isolation and the DOM The Same Origin Policy SOP in the Chrome Extension Wor...

kernel: Missing namespace check in net/netlink/af_netlink.c allows for network monitors to observe systemwide activity

The netlinkdelivertapskb function in net/netlink/afnetlink.c in the Linux kernel, through 4.14.4, does not restrict observations of Netlink messages to a single net namespace, when CONFIGNLMON is enabled. This allows local users to obtain sensitive information by leveraging the CAPNETADMIN...

kernel: Missing namespace check in net/netlink/af_netlink.c allows for network monitors to observe systemwide activity

The netlinkdelivertapskb function in net/netlink/afnetlink.c in the Linux kernel, through 4.14.4, does not restrict observations of Netlink messages to a single net namespace, when CONFIGNLMON is enabled. This allows local users to obtain sensitive information by leveraging the CAPNETADMIN...

kernel: Missing namespace check in net/netlink/af_netlink.c allows for network monitors to observe systemwide activity

The netlinkdelivertapskb function in net/netlink/afnetlink.c in the Linux kernel, through 4.14.4, does not restrict observations of Netlink messages to a single net namespace, when CONFIGNLMON is enabled. This allows local users to obtain sensitive information by leveraging the CAPNETADMIN...

Linux kernel access restriction bypass vulnerability

Linux kernel is the kernel used by Linux, the open source operating system released by the Linux Foundation in the United States. A security vulnerability exists in the net/netfilter/nfnetlinkcthelper.c file in Linux kernel 4.14.4 and earlier, which stems from the nfnlcthelperlist data structure...

CVE-2016-3708

Red Hat OpenShift Enterprise 3.2, when multi-tenant SDN is enabled and a build is run in a namespace that would normally be isolated from pods in other namespaces, allows remote authenticated users to access network resources on restricted pods via an s2i build with a builder image that 1 contain...

kernel: 'kill sig -1' must only apply to caller's pid namespace

The killsomethinginfo function in kernel/signal.c in the Linux kernel before 2.6.28 does not consider PID namespaces when processing signals directed to PID -1, which allows local users to bypass the intended namespace isolation, and send arbitrary signals to all processes in all namespaces, via ...

CVE-2009-1338

The killsomethinginfo function in kernel/signal.c in the Linux kernel before 2.6.28 does not consider PID namespaces when processing signals directed to PID -1, which allows local users to bypass the intended namespace isolation, and send arbitrary signals to all processes in all namespaces, via ...

CVE-2009-1338

The CVE-2009-1338 issue is confirmed in the Linux kernel prior to 2.6.28, where the kill_something_info() function in kernel/signal.c did not respect PID namespaces when handling signals directed to PID -1. This allowed a local attacker to bypass namespace isolation and send signals to processes ...