Important Security Updates
Avast: Avast! Free Antivirus has released version 17.4.2294. Updates are available on Avast’s website. Avast! has also released updates for Premier Antivirus, Pro Antivirus and Internet Security.
Dropbox: Dropbox has released version 25.4.28 for its file hosting program. Updates are available at Dropbox’s website. [See Citadel’s warning below]
Google Chrome: Google has released Google Chrome version 58.0.3029.96. Updates are available from within the browser or from Google Chrome’s website.
Mozilla Firefox: Mozilla has released version 53.0.2. Updates are available within the browser or from Mozilla’s website.
Skype: Skype has released Skype 220.127.116.11. Updates are available from the program or Skype’s website.
Viber: Viber has released version 6.7.2 for Windows. Updates are available on Viber’s website.
WinZip: Winzip has released version 21.5.12480. Updates are available from within the program, look for “Check for Updates” on the Help menu, or download from the WinZip website.
Current Software Versions
Adobe Flash 18.104.22.168
Adobe Reader DC 2017.009.20044
Dropbox 25.4.28 [Citadel warns against relying on security of Dropbox or other cloud-based file exchange systems. We recommend files containing sensitive information be independently encrypted with a program like Axcrypt; encryption keys be at least 15 characters long; and the master Dropbox [or other] password be at least 15 characters long and different from other passwords.]
Firefox 53.0.2 [Windows]
Google Chrome 58.0.3029.96
Internet Explorer 11.0.9600.18639
Java SE 8 Update 131 [Citadel recommends removing or disabling Java from your browser. Java is a major source of cyber criminal exploits. It is not needed for most internet browsing. If you have a particular web site that requires Java, Citadel recommends using a two-browser approach to minimize risk. If you normally browse the Web with Firefox, for example, disable the Java plugin in Firefox and use an alternative browser — such as Chrome, IE9, Safari, etc — with Java enabled to browse only the sites that require it.]
Microsoft Edge 40.15063.0.0
QuickTime 7.7.9 [Citadel recommends removing QuickTime. On April 14, 2016 US-CERT advised Microsoft Windows users to remove QuickTime. This followed a report in ars technica that Apple has no plans to update the Windows app despite at least two reliable QuickTime vulnerabilities that threaten Windows users who still have the program installed.]
Safari 10.1 [Mac OS X Mavericks, Yosemite, El Capitan]
For Your IT Department
Cisco Multiple Products: Cisco has released updates to address vulnerabilities in OpenSSL Affecting Cisco Products, Apache Struts2 Jakarta, CVR100W Wireless-N VPN Router, TelePresence ICMP, IOS XR, Aironet 1800, 2800, 3800 Series Access Points, Wide Area Application Services, Firepower Threat Defense and ASA, Finesse for Unified Contact Center Enterprise, Unity Connection ImageID, CallManager Express and others. Apply updates. Additional details are available at Cisco’s website.
Intel Multiple Products: Intel’s website.Intel has release updates to address vulnerabilities in Active Management Technology, Standard Manageability, and Small Business Technology, firmware versions 6.x, 7.x, 8.x 9.x, 10.x, 11.0, 11.5, and 11.6. Apply updates. Additional details are available at
If you are responsible for the security of your computer, Citadel’s Weekend Vulnerability and Patch Report is for you. We strongly urge you to take action to keep your workstation patched and updated.
If someone else is responsible for the security of your computer, forward our Weekend Vulnerability and Patch Report to them and follow up to make sure your computer has been patched and updated.
Vulnerability management is a key element of cyber security management. Cyber criminals take over user computers by writing computer programs that “exploit” vulnerabilities in operating systems (Windows, Apple OS, etc) and application programs (Adobe Acrobat, Office, Flash, Java, etc). When software companies find a vulnerability, they usually issue an update patch to fix the code running in their customer’s computers.
Citadel publishes our Weekend Vulnerability and Patch Report to alert readers to some of the week’s important updates and vulnerabilities. Our focus is on software typically found in the small or home office (SOHO) or that users are likely to have on their home computer. The report is not intended to be a thorough listing of updates and vulnerabilities.
Copyright © 2017 Citadel Information Group. All rights reserved.
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