Researcher discloses 10 D-Link zero-day router flaws

September 11, 2017 – 6:33 AM

When a zero-day vulnerability becomes public, of which by its nature no patches or fixes are available at the time, one is enough for vendors to come to terms with in order to rapidly devise a solution.

D-Link now has 10 such previously-unknown bugs on its plate to fix.

Last week, security researcher Pierre Kim chose to publicly disclose his findings related to D-Link 850L routers due to “difficulties” working with the vendor on a coordinated disclosure.

In a blog post, Kim said the flaws were found in the D-Link 850L, a wireless AC1200 dual-band gigabit cloud router, which also enables users to use Mydlink Cloud Services to access their home networks remotely.

Kim describes the product as a “router overall badly designed with a lot of vulnerabilities,” and says that he was able to compromise everything, from the LAN to the WAN, as well as the custom MyDlink cloud protocol.

Source:
http://www.zdnet.com/article/10-d-link-zero-day-router-flaws-exposed/

Expired domain names and malvertising

September 5, 2017 – 4:17 PM

In Q1 and Q2 of 2017, we noticed a sharp decline in drive-by downloads coming from compromised websites. The campaigns of the past are either gone (Pseudo Darkleech) or have changed focus (EITest using social engineering techniques).

Malvertising – which has remained steady and is currently the main driving force behind some of the most common malware and scam distribution operations- not only stems from various publishers but also from ‘abandoned’ websites. Those related domains once served a legitimate purpose but were never renewed by their owners and fell into the hands of actors looking to make a quick profit using questionable practices.

In this post, we take a look at how malicious redirections from expired domains work and what kind of traffic they lead to.

The life, death, and resurrection of a domain name

Most issues when it comes to web security don’t usually come from the platforms themselves but from the people that run them or from properties that have simply been relinquished. The folks over at Sucuri have written about this extensively and in a recent post, they showed how expired domains and outdated plugins in popular CMS were a deadly mix, resulting in malicious redirects.

Source:
https://blog.malwarebytes.com/threat-analysis/2017/09/expired-domain-names-and-malvertising/

Hardcoded Credentials Expose Customers of AT&T U-Verse

September 1, 2017 – 6:30 PM

On August 31, 2017, Nomotion released five vulnerabilities for two Arris modems used by AT&T U-Verse customers in the US. The vulnerabilities are of the following types:

The hardcoded credentials give attackers access to the device via SSH or HTTP/HTTPS. On certain devices, when logged into the modem, the attacker can then leverage the authenticated command injection vulnerabilities to get a root shell. This vulnerability is especially bad for users whose devices are exposed to the internet.

The firewall bypass vulnerability is particularly worrisome. After successfully gathering the list of hosts behind the firewall using the port 61001 information exposure, an unauthenticated remote attacker can then connect to any device behind the firewall by using the firewall bypass. Effectively opening the internal network to attack.

Source:
https://www.tenable.com/blog/hardcoded-credentials-expose-customers-of-att-u-verse

uBlock Origin released as a pure WebExtension for Firefox

September 1, 2017 – 8:09 AM

A new WebExtension version of the popular content blocker uBlock Origin was just uploaded to Mozilla’s official add-ons repository for Firefox.

The new version is compatible with Firefox’s new WebExtensions standard for extensions, and will as such continue to work when Firefox 57 gets released.

This first official release of the WebExtensions version of uBlock Origin works for the most part just like the legacy add-on version.

Users may experience issues however when they upgrade from the legacy version of the add-on to the new version.

Raymond Hill, the developer of uBlock Origin suggests that 32-bit users of Firefox stay on version 1.13.8 of the add-on until these issues are resolved.

Source:
https://www.ghacks.net/2017/08/31/ublock-origin-pure-webextension/

Microsoft bringing EMET back as a built-in part of Windows 10

June 27, 2017 – 4:37 PM

The Windows 10 Fall Creators Update will include EMET-like capabilities managed through a new feature called Windows Defender Exploit Guard.

Microsoft’s EMET, the Enhanced Mitigation Experience Toolkit, was a useful tool for hardening Windows systems. It used a range of techniques—some built in to Windows, some part of EMET itself—to make exploitable security flaws harder to reliably exploit. The idea being that, even if coding bugs should occur, turning those bugs into actual security issues should be made as difficult as possible.

With Windows 10, however, EMET’s development was essentially cancelled. Although Microsoft made sure the program ran on Windows 10, the company said that EMET was superfluous on its latest operating system. Some protections formerly provided by EMET had been built into the core operating system itself, and Windows 10 offered additional protections far beyond the scope of what EMET could do.

But as more mitigation capabilities have been put into Windows, the need for a system for managing and controlling them has not gone away. Some of the mitigations introduce application compatibility issues—a few even require applications to be deliberately written with the mitigation in mind—which means that Windows does not simply turn on every mitigation for every application. It’s here that Exploit Guard comes in.

Exploit Guard will be able to control the operating system-wide mitigation capabilities, as well as more individual, tailored protections. For example, with Exploit Guard, certain kinds of macros in Office documents can be blocked, and access to websites known to host lots of malware can be prevented.

Source:
https://arstechnica.com/information-technology/2017/06/microsoft-bringing-emet-back-as-a-built-in-part-of-windows-10/