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...

UBUNTU-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...

Linux - Broken uidgid Mapping for Nested User Namespaces

Linux - Broken uidgid Mapping for Nested User Namespaces commit 6397fac4915a "userns: bump idmap limits to 340" increases the number of possible uid/gid mappings that a namespace can have from 5 to 340. This is implemented by switching to a different data structure if the number of mappings excee...

CVE-2018-18955: Incorrect Authorization

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...

Linux - Broken uid/gid Mapping for Nested User Namespaces Exploit

Exploit for linux platform in category local exploits Linux - Broken uid/gid Mapping for Nested User Namespaces Exploit commit 6397fac4915a "userns: bump idmap limits to 340" increases the number of possible uid/gid mappings that a namespace can have from 5 to 340. This is implemented by switchin...

EulerOS Virtualization 2.5.0 : kernel (EulerOS-SA-2018-1234)

According to the versions of the kernel packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : - A use-after-free vulnerability was found in network namespaces code affecting the Linux kernel before 4.14.11. The function...

[SECURITY] Fedora 28 Update: mingw-xerces-c-3.2.1-1.fc28

Xerces-C is a validating XML parser written in a portable subset of C++. Xerces-C makes it easy to give your application the ability to read and write XML data. A shared library is provided for parsing, generating, manipulating, and validating XML documents. Xerces-C is faithful to the XML 1.0...

Linux Kernel UDP Fragmentation Offset (UFO) Privilege Escalation Exploit

This Metasploit module attempts to gain root privileges on Linux systems by abusing UDP Fragmentation Offload UFO. This exploit targets only systems using Ubuntu Trusty / Xenial kernels 4.4.0-21 'Linux Kernel UDP Fragmentation Offset UFO Privilege Escalation', 'Description' = %q This module...

glibc - realpath() Privilege Escalation Exploit

Exploit for linux platform in category local exploits This module requires Metasploit: https://metasploit.com/download Current source: https://github.com/rapid7/metasploit-framework class MetasploitModule "glibc 'realpath' Privilege Escalation", 'Description' = %q This module attempts to gain roo...

CVE-2018-6552 Apport treats the container PID as the global PID when /proc/<global_pid>/ is missing

Apport does not properly handle crashes originating from a PID namespace allowing local users to create certain files as root which an attacker could leverage to perform a denial of service via resource exhaustion, possibly gain root privileges, or escape from containers. The issamens function...

Linux 4.4.0 < 4.4.0-53 - AF_PACKET chocobo_root Privilege Escalation Exploit

This Metasploit module exploits a race condition and use-after-free in the packetsetring function in net/packet/afpacket.c AFPACKET in the Linux kernel to execute code as root CVE-2016-8655. The bug was initially introduced in 2011 and patched in 2016 in version 4.4.0-53.74, potentially affecting...

AF_PACKET chocobo_root Privilege Escalation

This module requires Metasploit: https://metasploit.com/download Current source: https://github.com/rapid7/metasploit-framework class MetasploitModule 'AFPACKET chocoboroot Privilege Escalation', 'Description' = %q This module exploits a race condition and use-after-free in the packetsetring...

AF_PACKET packet_set_ring Privilege Escalation

This module requires Metasploit: https://metasploit.com/download Current source: https://github.com/rapid7/metasploit-framework class MetasploitModule 'AFPACKET packetsetring Privilege Escalation', 'Description' = %q This module exploits a heap-out-of-bounds write in the packetsetring function in...

Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2018-4108)

The remote Oracle Linux 6 / 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2018-4108 advisory. - netfilter: nfnetlinkcthelper: Add missing permission checks Kevin Cernekee Orabug: 27260771 CVE-2017-17448 - netlink: Add netns check on taps Kev...

USN-3632-1 linux-azure vulnerabilities

It was discovered that a race condition leading to a use-after-free vulnerability existed in the ALSA PCM subsystem of the Linux kernel. A local attacker could use this to cause a denial of service system crash or possibly execute arbitrary code. CVE-2017-0861 It was discovered that the KVM...

USN-3632-1: Linux kernel (Azure) vulnerabilities

It was discovered that a race condition leading to a use-after-free vulnerability existed in the ALSA PCM subsystem of the Linux kernel. A local attacker could use this to cause a denial of service system crash or possibly execute arbitrary code. CVE-2017-0861 It was discovered that the KVM...

Ubuntu 16.04 LTS : Linux kernel (Azure) vulnerabilities (USN-3632-1)

The remote Ubuntu 16.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3632-1 advisory. It was discovered that a race condition leading to a use-after-free vulnerability existed in the ALSA PCM subsystem of the Linux kernel. A local attacker...

kernel: net: double-free and memory corruption in get_net_ns_by_id()

A use-after-free vulnerability was found in a network namespaces code affecting the Linux kernel since v4.0-rc1 through v4.15-rc5. The function getnetnsbyid does not check for the net::count value after it has found a peer network in netnsids idr which could lead to double free and memory...

kernel: Missing capabilities check in net/netfilter/nfnetlink_cthelper.c allows for unprivileged access to systemwide nfnl_cthelper_list structure

The net/netfilter/nfnetlinkcthelper.c function in the Linux kernel through 4.14.4 does not require the CAPNETADMIN capability for new, get, and del operations. This allows local users to bypass intended access restrictions because the nfnlcthelperlist data structure is shared across all net...

kernel: net: double-free and memory corruption in get_net_ns_by_id()

A use-after-free vulnerability was found in a network namespaces code affecting the Linux kernel since v4.0-rc1 through v4.15-rc5. The function getnetnsbyid does not check for the net::count value after it has found a peer network in netnsids idr which could lead to double free and memory...