UBUNTU-CVE-2020-25039

Sylabs Singularity 3.2.0 through 3.6.2 has Insecure Permissions on temporary directories used in fakeroot or user namespace container execution...

CVE-2020-14348

AMQ Online prior to 1.5.2 is affected by CVE-2020-14348, where injecting an invalid top-level field into a user’s AddressSpace configuration in the user namespace can lead to an inconsistent state, causing provisioning and address-creation failures and degraded operation of AMQ Online components....

CVE-2020-25039

Sylabs Singularity 3.2.0 through 3.6.2 has Insecure Permissions on temporary directories used in fakeroot or user namespace container execution...

CVE-2020-25039

Removed by vendor...

AMQ: Denial of Service via unrecognized field injection

A flaw was found in AMQ Online before 1.5.2, where injecting an invalid field to a user's address space configuration of the user namespace puts AMQ Online in an inconsistent state. In this inconsistent state, the AMQ Online components do not operate properly. For example, the failure of...

CVE-2018-18955

A flaw was found in the Linux kernel where mapwrite in kernel/usernamespace.c allows privilege escalation as it mishandles nested user namespaces with more than 5 UID or GID ranges. An unprivileged user with CAPSYSADMIN in an affected user namespace can bypass access controls on resources outside...

Exploit for Use After Free in Linux Linux_Kernel

This repository contains various kernel exploits for Linux systems. The exploits target different vulnerabilities, including CVE-2016-8655, CVE-2017-1000112, CVE-2017-7308, and CVE-2018-18955, among others. The exploits are implemented in C and use various techniques, such as KASLR and SMEP/SMAP...

openSUSE: Security Advisory for containerd, docker, docker-runc, go, go1.11, go1.12, golang-github-docker-libnetwork (openSUSE-SU-2020:0045-1)

The remote host is missing an update for the Copyright C 2020 Greenbone Networks GmbH Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-or-later This program is free software; you can...

OPENSUSE-SU-2020:0045-1 Security update for containerd, docker, docker-runc, golang-github-docker-libnetwork

This update for containerd, docker, docker-runc, golang-github-docker-libnetwork fixes the following issues: Security issue fixed: - CVE-2019-16884: Fixed incomplete patch for LSM bypass via malicious Docker image that mount over a /proc directory bsc1152308. Bug fixes: - Update to Docker...

SUSE-SU-2020:0035-1 Security update for containerd, docker, docker-runc, golang-github-docker-libnetwork

This update for containerd, docker, docker-runc, golang-github-docker-libnetwork fixes the following issues: Security issue fixed: - CVE-2019-16884: Fixed incomplete patch for LSM bypass via malicious Docker image that mount over a /proc directory bsc1152308. Bug fixes: - Update to Docker...

Ubuntu 19.10 - ubuntu-aufs-modified mmap_region() Breaks Refcounting in overlayfs/shiftfs Error Path

Tested on 19.10. Ubuntu's aufs kernel patch includes the following change which I interestingly can't see in the AUFS code at https://github.com/sfjro/aufs5-linux/blob/master/mm/mmap.c: ================================================================== +define vmafputvma vmadofputvma, func, LINE...

Ubuntu shiftfs refcount Underflow / Type Confusion

Ubuntu: refcount underflow and type confusion in shiftfs Tested on Ubuntu 19.10, kernel "5.3.0-19-generic 20-Ubuntu". Ubuntu ships a filesystem "shiftfs" in fs/shiftfs.c in the kernel tree that doesn't exist upstream. This filesystem can be mounted from user namespaces, meaning that this is...

UBUNTU-CVE-2019-15793

In shiftfs, a non-upstream patch to the Linux kernel included in the Ubuntu 5.0 and 5.3 kernel series, several locations which shift ids translate user/group ids before performing operations in the lower filesystem were translating them into inituserns, whereas they should have been translated in...

Ubuntu ubuntu-aufs-modified mmap_region() Refcounting Issue

Ubuntu: ubuntu-aufs-modified mmapregion breaks refcounting in overlayfs/shiftfs error path Tested on 19.10. Ubuntu's aufs kernel patch includes the following change which I interestingly can't see in the AUFS code at https://github.com/sfjro/aufs5-linux/blob/master/mm/mmap.c:...

The vulnerability of the map_write() function in “kernel/user_namespace.c” in the Linux operating system allows a hacker to gain access to confidential data, compromise its integrity, and cause service failures.

The vulnerability of the mapwrite function in “kernel/usernamespace.c” in the Linux operating system is related to improper authorization. Exploiting this vulnerability can allow an attacker to access confidential data, compromise its integrity, and cause service failures...

Linux - Nested User Namespace idmap Limit Local Privilege Escalation (Metasploit)

This module requires Metasploit: https://metasploit.com/download Current source: https://github.com/rapid7/metasploit-framework class MetasploitModule 'Linux Nested User Namespace idmap Limit Local Privilege Escalation', 'Description' = %q This module exploits a vulnerability in Linux kernels...

Linux Nested User Namespace idmap Limit Local Privilege Escalation Exploit

This Metasploit module exploits a vulnerability in Linux kernels 4.15.0 to 4.18.18, and 4.19.0 to 4.19.1, where broken uid/gid mappings between nested user namespaces and kernel uid/gid mappings allow elevation to root CVE-2018-18955. The target system must have unprivileged user namespaces enabl...

Linux Nested User Namespace idmap Limit Local Privilege Escalation

This module exploits a vulnerability in Linux kernels 4.15.0 to 4.18.18, and 4.19.0 to 4.19.1, where broken uid/gid mappings between nested user namespaces and kernel uid/gid mappings allow elevation to root CVE-2018-18955. The target system must have unprivileged user namespaces enabled and the...

CVE-2018-18955

In the Linux kernel 4.15.x through 4.19.x before 4.19.2, mapwrite in kernel/usernamespace.c allows privilege escalation because it mishandles nested user namespaces with more than 5 UID or GID ranges. A user who has CAPSYSADMIN in an affected user namespace can bypass access controls on resources...

EUVD-2018-10659

In the Linux kernel 4.15.x through 4.19.x before 4.19.2, mapwrite in kernel/usernamespace.c allows privilege escalation because it mishandles nested user namespaces with more than 5 UID or GID ranges. A user who has CAPSYSADMIN in an affected user namespace can bypass access controls on resources...