Ubuntu 14.04 LTS : Linux kernel vulnerabilities (USN-3160-1)

The remote Ubuntu 14.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3160-1 advisory. CAI Qian discovered that shared bind mounts in a mount namespace exponentially added entries without restriction to the Linux kernel's mount table. A loc...

USN-3160-1: Linux kernel vulnerabilities

CAI Qian discovered that shared bind mounts in a mount namespace exponentially added entries without restriction to the Linux kernel's mount table. A local attacker could use this to cause a denial of service system crash. CVE-2016-6213 It was discovered that a race condition existed in the procf...

USN-3160-1 linux vulnerabilities

CAI Qian discovered that shared bind mounts in a mount namespace exponentially added entries without restriction to the Linux kernel's mount table. A local attacker could use this to cause a denial of service system crash. CVE-2016-6213 It was discovered that a race condition existed in the procf...

USN-3159-2: Linux kernel (OMAP4) vulnerability

It was discovered that a race condition existed in the procfs environread function in the Linux kernel, leading to an integer underflow. A local attacker could use this to expose sensitive information kernel memory...

USN-3159-1: Linux kernel vulnerability

It was discovered that a race condition existed in the procfs environread function in the Linux kernel, leading to an integer underflow. A local attacker could use this to expose sensitive information kernel memory...

Critical kernel security update: vulnerability fixes CVE-2016-7910, CVE-2016-7911 (and other), new kernel 2.6.32-042stab120.11

This update provides a new Virtuozzo 6.0 kernel 2.6.32-042stab120.11 based on the Red Hat Enterprise Linux 6.8 kernel 2.6.32-642.6.1.el6. The new kernel provides security and stability fixes. Vulnerability id: CVE-2016-1583 Stack overflow via ecryptfs and /proc/$pid/environ. It was found that...

kernel: Stack overflow via ecryptfs and /proc/$pid/environ

It was found that stacking a file system over procfs in the Linux kernel could lead to a kernel stack overflow due to deep nesting, as demonstrated by mounting ecryptfs over procfs and creating a recursion by mapping /proc/environ. An unprivileged, local user could potentially use this flaw to...

kernel: Stack overflow via ecryptfs and /proc/$pid/environ

It was found that stacking a file system over procfs in the Linux kernel could lead to a kernel stack overflow due to deep nesting, as demonstrated by mounting ecryptfs over procfs and creating a recursion by mapping /proc/environ. An unprivileged, local user could potentially use this flaw to...

Linux kernel in a recursive exploit-vulnerability warning-the black bar safety net

6 on 1 Number, I have submitted a linux kernel in any recursion vulnerability. If the installed Ubuntu system when choosing a home directory encryption, the vulnerability to by a local user to trigger. If you want to know the exploit code and a short bit of the vulnerability report, please visit...

Exploiting Recursion in the Linux Kernel

Posted by Jann Horn, Google Project Zero On June 1st, I reported an arbitrary recursion bug in the Linux kernel that can be triggered by a local user on Ubuntu if the system was installed with home directory encryption support. If you want to see the crasher, the exploit code and the shorter bug...

CVE-2016-1583

It was found that stacking a file system over procfs in the Linux kernel could lead to a kernel stack overflow due to deep nesting, as demonstrated by mounting ecryptfs over procfs and creating a recursion by mapping /proc/environ. An unprivileged, local user could potentially use this flaw to...

ecryptfs-utils: privilege escalation

An unprivileged user can mount an ecryptfs over /proc/$pid because according to stat, it is a normal directory and owned by the user. However, the user is not actually permitted to create arbitrary directory entries in /proc/$pid, and ecryptfs' behavior might be enabling privilege escalation...

[SECURITY] [DLA 397-1] ecryptfs-utils security update

Package : ecryptfs-utils Version : 83-4+squeeze2 CVE ID : CVE-2016-1572 Jann Horn discovered that the setuid-root mount.ecryptfsprivate helper in the ecryptfs-utils would mount over any target directory that the user owns, including a directory in procfs. A local attacker could use this flaw to...

CVE-2013-4740

goodixtool.c in the Goodix gt915 touchscreen driver for the Linux kernel 3.x, as used in Qualcomm Innovation Center QuIC Android contributions for MSM devices and other products, relies on user-space length values for kernel-memory copies of procfs file content, which allows attackers to gain...

CVE-2013-6122

goodixtool.c in the Goodix gt915 touchscreen driver for the Linux kernel 3.x, as used in Qualcomm Innovation Center QuIC Android contributions for MSM devices and other products, does not properly synchronize updates to a global variable, which allows local users to bypass intended access...

OpenSSH 6.6 SFTP Misconfiguration Proof Of Concept

OpenSSH lets you grant SFTP access to users without allowing full command execution using "ForceCommand internal-sftp". However, if you misconfigure the server and don't use ChrootDirectory, the user will be able to access all parts of the filesystem that he has access to - including procfs. On...

Linux Kernel < 2.6.14.6 procfs Kernel Memory Disclosure Exploit

/ cve-2005-4605.c Linux Kernel 2.6.14.6 procfs Kernel Memory Disclosure Jon Oberheide [email protected] http://jon.oberheide.org Information: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-4605 The procfs code procmisc.c in Linux 2.6.14.3 and other versions before 2.6.15 allows attackers ...

FreeBSD 4.x Process Concealment Bypass Vulnerability

No description provided by source. source: http://www.securityfocus.com/bid/4768/info In FreeBSD, setting kern.psshowallprocs=0 via the sysctl call is meant to disable normal users from seeing any running processes that are not owned by them. The current implementation of this feature fails to...

Sun Solaris 7.0 procfs Vulnerability

No description provided by source. source: http://www.securityfocus.com/bid/448/info A nonpriviliged user can crash any 32 or 64 bit non-intel machine running Solaris 7 by executing the following: more /proc/self/psinfo This is due to a bug in the Solaris 7 procfs. %more /proc/self/psinfo crash...

Linux kernel 2.2/2.4 procfs Stream Redirection to Process Memory Vulnerability

No description provided by source. source: http://www.securityfocus.com/bid/2937/info The Linux /proc filesystem is a virtual filesystem provided by the Linux Kernel as an interface to some process and system information and parameters. Under certain circumstances, an access validation error may...