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Dynamic Content Attacks and How to Mitigate them

This blog post is a summary of this weeks Information Security News put together by our Security Incident Response Team (SIRT).

“Most dynamic content attacks are launched against content delivery networks. The attacker uses networks of infected hosts or botnets to request non-cached content from the target. If enough of these requests are made, the server will be overloaded and crash.”

“Taking the right precautions is essential. Here are some steps that you can take to protect your CDN from a dynamic content attack.”

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5 tips for better cloud security

This blog post is a summary of this weeks Information Security News put together by our Security Incident Response Team (SIRT). Read more

Blocking cyber attacks; Why you should understand adversary playbooks

This blog post is a summary of this weeks Information Security News put together by our Security Incident Response Team (SIRT).

It’s time to get off the treadmill: Why you should understand adversary playbooks

“Flipping the equation on known adversaries by developing and deploying controls at locations on the intrusion kill chain designed specifically for these known playbooks will increase a company’s ability to block an attack. The cybersecurity industry must collaborate to identify all know adversary playbooks and share this knowledge with each other and the public.”

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Security is Not a One-Person Job

Security is not a one-person job. It can’t be accomplished with one person, it can’t be accomplished with one company.

“Security is not a one-person job. It can’t be accomplished with one person, it can’t be accomplished with one company,” says Walls. “So we need partners, and we need friends in the industry to work together.” No statement could better summarize what building a culture of security looks like. Learn more about how Walls and Prime Therapeutics implemented DLP to protect highly sensitive data for millions of people.

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BF-SIRT Newsletter 2018-28

Botnet built with one exploit only

A malware author has built a huge botnet comprised of over 18,000 routers in the span of only one day.

This new botnet has been spotted this week by security researchers from NewSky Security, and their findings have been confirmed by Qihoo 360 Netlab, Rapid7, and Greynoise.

The botnet has been built by exploiting a vulnerability in Huawei HG532 routers, tracked as CVE-2017-17215.

Botnet author is a known threat actor

The botnet herder identified himself with the pseudonym “Anarchy.” Answering inquiries from both Anubhav and Bleeping Computer, Anarchy did not provide a reason why he created the botnet.

But Anubhav believes Anarchy may actually be a hacker who previously identified as Wicked, which Anubhav interviewed on NewSky’s blog and Fortinet featured in a report here.

But the real problem here is not a malware author doing what he does best. The problem is the relative ease with which Anarchy built a gigantic botnet within one day.

He didn’t do it with a zero-day or some vulnerability that had not been exploited before. He did so with a high-profile vulnerability that many botnets have exploited before.

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Public By Default: What Venmo (and the Whole World) Knows About You

Microsoft Identity Bounty Program Pays $500 to $100,000 for Bugs

Sextortion scam knows your password, but don’t fall for it

Director of National Intelligence warns of devastating cyber threat to US infrastructure

Google User Content CDN Used for Malware Hosting

BF-SIRT Newsletter 2018-27

Chrome Now Features Site Isolation to Defend Against Spectre

A new feature called site isolation is being tapped to protect Chrome users against Spectre.

Google introduced new security mitigations for its Chrome browser to defend against recently discovered Spectre variants.

The new security feature, called site isolation, essentially isolates different browser work processes between various browser tabs. That means one tab’s webpage rendering and functions won’t interfere with what is happening in another. It has now been pushed out to most users of Chrome 67, released in May, for platforms Windows, Mac, Linux and ChromeOS, said Google.

“Speculative execution side-channel attacks like Spectre are a newly discovered security risk for web browsers,” said Google software engineer Charlie Reis in a Wednesday post. “A website could use such attacks to steal data or login information from other websites that are open in the browser.”

Site Isolation is nothing new. It’s been optionally available as an experimental enterprise policy since Chrome 63 for customers. But, said Reis, many known issues have been resolved since then, making it practical to enable by default for all desktop Chrome users.

On Tuesday, more Spectre variants were disclosed –  dubbed Spectre1.1 and a subset, Spectre1.2, collectively referred to as Variant 4 of Spectre by Intel and ARM.

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Default router password leads to spilled military secrets
The next generation of WI-FI security will save you from yourself
Update Flash (and Adobe Acrobat) NOW!
Thermanator attack steals passwords by reading thermal residue on keyboardss
Stolen D-Link certificate used to digitally sign spying malware

Photo by Charles Deluvio 🇵🇭🇨🇦 on Unsplash

BF-SIRT Newsletter 2018-26

Gentoo shows off prompt and professional security response after minor breach

A weak administrator password allowed an unknown attacker to gain access to the Gentoo Linux distribution’s GitHub account and lock developers out of it. The GitHub repositories of Gentoo are only downstream mirrors from the self-hosted Gentoo.org infrastructure.

From an organizational standpoint, Gentoo’s handling of the incident was prompt and professional. Gentoo released official statements promptly detailing the nature of breach. This should be considered the standard against which organizations are judged for handling security breaches.

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Programmer tried to sell cyberweapon on dark web for $50M: Reminder to secure employees
Gartner Identifies the Top Six Security and Risk Management Trends
UK Banks Told To Show Their Backup Plans For Tech Shutdowns
Google tries to calm controversy over app developers having access to your Gmail
Why LTE and 5G networks could be affected by these new security vulnerabilities

 

(Blogpost image by Charles Deluvio 🇵🇭🇨🇦, “Front-End Development“, “Do whatever you want”-license by Unsplash)

BF-SIRT Newsletter 2018-23

New Vulnerability Found in All Modern Intel CPUs

Another security vulnerability has been discovered in Intel chips that affects the processor’s speculative execution technology. Dubbed Lazy FP State Restore, the vulnerability (CVE-2018-3665) within Intel Core and Xeon processors has just been confirmed by Intel, and vendors are now rushing to roll out security updates in order to fix the flaw.

Unlike other chip vulnerabilities, this one does not reside in the hardware layer, so this can be fixed by new microcode from Intel. As always, keep your software up to date.

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Startup Working on Contentious Pentagon AI Project Was Hacked
Tens of Thousands of Android Devices Are Exposing Their Debug Port
Citation needed: Europe claims Kaspersky wares ‘confirmed as malicious’
Feds Bust Dozens of Email Scammers, but Your Inbox Still Isn’t Safe
What got breached this week? Ticket portals, DNA sites, and Atlanta’s police cameras

 

(Blogpost image by Alexandru-Bogdan Ghita, “CPU in Socket”, “Do whatever you want”-license by Unsplash)

San Francisco Airport (SFO) at night

BF-SIRT Newsletter 2018-16

State-Sponsored Cyber Actors do State-Sponsored Cyber Actor stuff

US-CERT published a joint Technical Alert (TA) resulting from efforts between the Department of Homeland Security (DHS), the Federal Bureau of Investigation (FBI), and the United Kingdom’s National Cyber Security Centre (NCSC) providing information on the worldwide cyber exploitation of network infrastructure devices (e.g., router, switch, firewall, Network-based Intrusion Detection System (NIDS) devices) by Russian state-sponsored cyber actors. And they provide some nice concrete information that can be reacted to. The fact that this happens is not new, and there is no reason to think Russia is the only ones who does this, they are not doing anything spectacular or fancy either. Check for the indicators provided, keep calm and carry on.

 

In a separate note, Oracle announces 250 security fixes in quarterly patch update, Cisco published important and critical security advisories for Firepower, ASA and WebEx.

 

Top 5 Security links
RSA 2018 Keynote – The Five Most Dangerous New Attack Techniques
PCI Council Releases Guidelines for Cloud Compliance
Hacking charge for URL-manipulation in Canada
Drupalgeddon 2 Vulnerability Used to Infect Servers With Backdoors & Coinminers
Tech Firms Sign ‘Digital Geneva Accord’ Not to Aid Governments in Cyberwar

 

(Blogpost image by Andrew Choy from Santa Clara, California, “San Francisco International Airport at night“, Creative Commons Attribution-Share Alike)

BF-SIRT Newsletter 2018-15

Facebook

On Tuesday and Wednesday this week, Mark Zuckerberg took part of congressional hearings regarding Cambridge Analytica and privacy concerns regarding Facebook. There are multiple news outlets covering the story, and KrebsonSecurity also wrote an article about how one should not trust these type of quizzes and such may receive data about you and your friends when you do them (which is how Cambridge Analytica got a hold of information about more than 50 million users when they approved access to the app “This is your digital life”).

Facebook has since added a website that allows you to check if your information was leaked or not, and they have also added additional privacy information on what type of data you have uploaded to Facebook with regards to Contacts, Call and Text history if you allowed Messenger or Facebook on your mobile to do so.

Facebook has also updated their bug bounty program and now offers a $40,000 bounty if you find evidence of Data Leaks.a

 

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Finland hit by a data breach affecting over 130,000 users
Drupal CVE-2018-7600 PoC is Public
Outlook bug allowed hackers to use .rtf files to steal windows passwords
Your Windows PC can get hacked by simply visiting a website if you don’t update
PowerHammer lets hackers steal data from air-gapped computers through power lines