Vulnerabilities / Threats
1/19/2016
12:45 PM
Sara Peters
Sara Peters
Quick Hits
Connect Directly
Twitter
RSS
E-Mail
50%
50%

Linux Kernel Bug Allows Local-To-Root Privilege Escalation

Tens of millions of Linux servers, desktops, plus 66 percent of Android devices affected.

Tens of millions of Linux PCs and servers and 66% of all Android devices are impacted by a  vulnerability in the Linux kernel that allows privilege escalation from local to root via a use-after-free attack, according to the research team at Perception Point.

Although no exploits for the bug have been seen in the wild yet, the vulnerability is far-reaching. According to Yevgeny Pats, co-founder and CEO of Perception Point, the bug affects all Linux kernels from release 3.8 and later, both 32-bit and 64-bit, operating on desktop, server, mobile, and embedded devices. 

The vulnerability, CVE-2016-0728, is a reference leak in the keyrings facility, where security data like encryption keys and authentication keys are stored.

Keyring objects can be shared between processes by referring to the same keyring name. The reference leak occurs when an error message is generated if a process tries to replace its current session keyring with the same one. 

Once the object is leaked, it can be leveraged in a use-after-free exploit that grants the attacker root access.

For more information, see the technical analysis at: http://perception-point.io/2016/01/14/analysis-and-exploitation-of-a-linux-kernel-vulnerability-cve-2016-0728/

Sara Peters is Senior Editor at Dark Reading and formerly the editor-in-chief of Enterprise Efficiency. Prior that she was senior editor for the Computer Security Institute, writing and speaking about virtualization, identity management, cybersecurity law, and a myriad ... View Full Bio

Comment  | 
Print  | 
More Insights
Comments
Newest First  |  Oldest First  |  Threaded View
gsatpathy
50%
50%
gsatpathy,
User Rank: Apprentice
1/20/2016 | 5:45:23 PM
Secure Linux
Will really help making Linux foot print more secure and robust. Are the patch/update available for all distros.
RyanSepe
50%
50%
RyanSepe,
User Rank: Ninja
1/19/2016 | 12:56:28 PM
Keys to the kingdom
If you have a linux footprint or an android footprint especially, you are going to want to patch against this as soon as possible.
Register for Dark Reading Newsletters
White Papers
Video
Cartoon Contest
Write a Caption, Win a Starbucks Card! Click Here
Latest Comment: This comment is waiting for review by our moderators.
Current Issue
8 Key Building Blocks for Enterprise Network Defense
Networks are changing rapidly -- and so are strategies for protecting them. This Tech Digest looks at the fundamentals for the next-gen environment.
Flash Poll
Slideshows
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2013-7445
Published: 2015-10-15
The Direct Rendering Manager (DRM) subsystem in the Linux kernel through 4.x mishandles requests for Graphics Execution Manager (GEM) objects, which allows context-dependent attackers to cause a denial of service (memory consumption) via an application that processes graphics data, as demonstrated b...

CVE-2015-4948
Published: 2015-10-15
netstat in IBM AIX 5.3, 6.1, and 7.1 and VIOS 2.2.x, when a fibre channel adapter is used, allows local users to gain privileges via unspecified vectors.

CVE-2015-5660
Published: 2015-10-15
Cross-site request forgery (CSRF) vulnerability in eXtplorer before 2.1.8 allows remote attackers to hijack the authentication of arbitrary users for requests that execute PHP code.

CVE-2015-6003
Published: 2015-10-15
Directory traversal vulnerability in QNAP QTS before 4.1.4 build 0910 and 4.2.x before 4.2.0 RC2 build 0910, when AFP is enabled, allows remote attackers to read or write to arbitrary files by leveraging access to an OS X (1) user or (2) guest account.

CVE-2015-6333
Published: 2015-10-15
Cisco Application Policy Infrastructure Controller (APIC) 1.1j allows local users to gain privileges via vectors involving addition of an SSH key, aka Bug ID CSCuw46076.

Dark Reading Radio
Archived Dark Reading Radio
In this episode of Dark Reading Radio, veteran CISOs will share their experience and insight into how organizations can get the best bang for their security buck.