Ubuntu 14.0415.10 - User Namespace Overlayfs Xattr SetGID Privilege Escalation

Ubuntu 14.0415.10 - User Namespace Overlayfs Xattr SetGID Privilege Escalation Source: http://www.halfdog.net/Security/2016/UserNamespaceOverlayfsXattrSetgidPrivilegeEscalation/ Introduction Problem description: Linux user namespace allows to mount file systems as normal user, including the...

Ubuntu 15.10 - 'USERNS ' Overlayfs Over Fuse Privilege Escalation

Source: http://www.halfdog.net/Security/2016/OverlayfsOverFusePrivilegeEscalation/ Introduction Problem description: On Ubuntu Wily it is possible to place an USERNS overlayfs mount over a fuse mount. The fuse filesystem may contain SUID binaries, but those cannot be used to gain privileges due t...

Ubuntu 14.04/15.10 - User Namespace Overlayfs Xattr SetGID Privilege Escalation

Source: http://www.halfdog.net/Security/2016/UserNamespaceOverlayfsXattrSetgidPrivilegeEscalation/ Introduction Problem description: Linux user namespace allows to mount file systems as normal user, including the overlayfs. As many of those features were not designed with namespaces in mind, this...

Linux Kernel (Ubuntu / Fedora / RedHat) - 'Overlayfs' Local Privilege Escalation (Metasploit)

This module requires Metasploit: http://metasploit.com/download Current source: https://github.com/rapid7/metasploit-framework require "msf/core" class MetasploitModule 'Overlayfs Privilege Escalation', 'Description' = %q This module attempts to exploit two different CVEs related to overlayfs...

CVE-2015-8953

fs/overlayfs/copyup.c in the Linux kernel before 4.2.6 uses an incorrect cleanup code path, which allows local users to cause a denial of service dentry reference leak via filesystem operations on a large file in a lower overlayfs layer...

CVE-2015-8953

fs/overlayfs/copyup.c in the Linux kernel before 4.2.6 uses an incorrect cleanup code path, which allows local users to cause a denial of service dentry reference leak via filesystem operations on a large file in a lower overlayfs layer...

UBUNTU-CVE-2015-8953

fs/overlayfs/copyup.c in the Linux kernel before 4.2.6 uses an incorrect cleanup code path, which allows local users to cause a denial of service dentry reference leak via filesystem operations on a large file in a lower overlayfs layer...

CVE-2015-8953

fs/overlayfs/copyup.c in the Linux kernel before 4.2.6 uses an incorrect cleanup code path, which allows local users to cause a denial of service dentry reference leak via filesystem operations on a large file in a lower overlayfs layer...

Ubuntu: Security Advisory (USN-3070-3)

The remote host is missing an update for the SPDX-FileCopyrightText: 2016 Greenbone AG 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-only ifdescription...

Ubuntu 14.04 LTS : Linux kernel (Xenial HWE) vulnerabilities (USN-3070-4)

The remote Ubuntu 14.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3070-4 advisory. USN-3070-1 fixed vulnerabilities in the Linux kernel for Ubuntu 16.04 LTS. This update provides the corresponding updates for the Linux Hardware Enableme...

Ubuntu 16.04 LTS : Linux kernel (Qualcomm Snapdragon) vulnerabilities (USN-3070-3)

The remote Ubuntu 16.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3070-3 advisory. A missing permission check when settings ACLs was discovered in nfsd. A local user could exploit this flaw to gain access to any file by setting an ACL...

Ubuntu 16.04 LTS : Linux kernel (Raspberry Pi 2) vulnerabilities (USN-3070-2)

The remote Ubuntu 16.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3070-2 advisory. A missing permission check when settings ACLs was discovered in nfsd. A local user could exploit this flaw to gain access to any file by setting an ACL...

USN-3070-4: Linux kernel (Xenial HWE) vulnerabilities

USN-3070-1 fixed vulnerabilities in the Linux kernel for Ubuntu 16.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement HWE kernel from Ubuntu 16.04 LTS for Ubuntu 14.04 LTS. A missing permission check when settings ACLs was discovered in nfsd. A local user cou...

USN-3070-3 linux-snapdragon vulnerabilities

A missing permission check when settings ACLs was discovered in nfsd. A local user could exploit this flaw to gain access to any file by setting an ACL. CVE-2016-1237 Kangjie Lu discovered an information leak in the Reliable Datagram Sockets RDS implementation in the Linux kernel. A local attacke...

USN-3070-3: Linux kernel (Qualcomm Snapdragon) vulnerabilities

A missing permission check when settings ACLs was discovered in nfsd. A local user could exploit this flaw to gain access to any file by setting an ACL. CVE-2016-1237 Kangjie Lu discovered an information leak in the Reliable Datagram Sockets RDS implementation in the Linux kernel. A local attacke...

USN-3070-2 linux-raspi2 vulnerabilities

A missing permission check when settings ACLs was discovered in nfsd. A local user could exploit this flaw to gain access to any file by setting an ACL. CVE-2016-1237 Kangjie Lu discovered an information leak in the Reliable Datagram Sockets RDS implementation in the Linux kernel. A local attacke...

USN-3070-2: Linux kernel (Raspberry Pi 2) vulnerabilities

A missing permission check when settings ACLs was discovered in nfsd. A local user could exploit this flaw to gain access to any file by setting an ACL. CVE-2016-1237 Kangjie Lu discovered an information leak in the Reliable Datagram Sockets RDS implementation in the Linux kernel. A local attacke...

Ubuntu 16.04 LTS : Linux kernel vulnerabilities (USN-3070-1)

The remote Ubuntu 16.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3070-1 advisory. A missing permission check when settings ACLs was discovered in nfsd. A local user could exploit this flaw to gain access to any file by setting an ACL...

Ubuntu: Security Advisory (USN-3070-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2016 Greenbone AG 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-only ifdescription...

USN-3070-1: Linux kernel vulnerabilities

A missing permission check when settings ACLs was discovered in nfsd. A local user could exploit this flaw to gain access to any file by setting an ACL. CVE-2016-1237 Kangjie Lu discovered an information leak in the Reliable Datagram Sockets RDS implementation in the Linux kernel. A local attacke...