Today, we released the first ever Cisco IOS Software and IOS XE Software Security Advisory Bundled Publication. As a reminder, Cisco discloses IOS vulnerabilities on a predictable schedule (on the fourth Wednesday of March and September each calendar year). In direct response to your feedback, we have also included a Cisco Security Advisory addressing vulnerabilities in Cisco IOS XE Software in this publication. We hope this timeline and additional “bundling” continues to allow your organization to plan and ensure resources are available to analyze, test, and remediate vulnerabilities in your environments.
Today’s edition of the Cisco IOS Software Security Advisory Bundled Publication includes seven advisories that affect the following technologies:
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Tags: Cisco IOS software, psirt, security, security advisories, vulnerabilities
Today, Microsoft has released their monthly set of security bulletins designed to address security vulnerabilities within their products. This month’s release sees a total of 14 bulletins being released which address 45 CVEs. The first 5 bulletins are rated critical and address vulnerabilities within Internet Explorer, Office, Windows, and VBScript. The remaining 9 bulletins are rated important and cover vulnerabilities within Windows Kernel Mode Drivers, Exchange, Task Scheduler, Remote Desktop, SChannel, and the Microsoft Graphics component. Read More »
Tags: 0-day, coverage, ms tuesday, rules, security, Talos
This blog post was authored by Troy Fridley and Omar Santos of Cisco PSIRT.
On Mar 9 2015, the Project Zero team at Google revealed findings from new research related to the known issue in the DDR3 Memory specification referred to as “Row Hammer”. Row Hammer is an industry-wide issue that has been discussed publicly since (at least) 2012.
The new research by Google shows that these types of errors can be introduced in a predictable manner. A proof-of-concept (POC) exploit that runs on the Linux operating system has been released. Successful exploitation leverages the predictability of these Row Hammer errors to modify memory of an affected device. An authenticated, local attacker with the ability to execute code on the affected system could elevate their privileges to that of a super user or “root” account. This is also known as Ring 0. Programs that run in Ring 0 can modify anything on the affected system. Read More »
Tags: cybersecurity, DRAM, Exploit, psirt, row hammer, rowhammer, security
In February, Cisco Managed Threat Defense (MTD) security investigators detected a rash of Dridex credential-stealing malware delivered via Microsoft Office macros. It’s effective, and the lures appear targeted at those responsible for handling purchase orders and invoices. Here’s a breakdown of the types of emails we’ve observed phishing employees and inserting trojans into user devices.
Subjects captured from Dridex campaign in February 2015
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Tags: botnet, Dridex, malware, Managed Threat Defense, security, trojan
In the first of a two-part blog series, The Seven Deadly Sins of User Access Controls, my colleague Jean Gordon Kocienda provided fresh insights into overly-permissive user access controls as a common underlying cause of data breaches. In this blog, I address the solutions to those “Seven Deadly Sins” with a modern twist on the antiquity typically known as the “Seven Wonders.”
Information Security professionals need to address user access control in the context of today’s complex threats, coupled with a fast changing IT landscape. Long gone are the days of only a few with a need to know and key corporate assets being housed behind the enterprise perimeter. We have shifted to an agile, data-centric environment with increasing user populations who may also be third-party suppliers or contractors needing fast access to assets that were previously off limits. And, it’s not just massive volumes of data that need protecting; it’s access to critical work streams and transactions too.
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Tags: access control, automation, mindfulness, security, training