Weekend Vulnerability and Patch Report, May 6, 2018

Weekend Vulnerability and Patch Report, May 6, 2018

Important Security Updates

7-Zip: 7-Zip.org has released version 18.05 (32-bit and 64-bit). Updates are available from 7-Zip’s website.

LastPass for Windows: LastPass (freeware) has released version 4.91 for its Free Password Manager. Updates are available from LastPass’ website.

Mozilla Firefox: Mozilla has released Version 59.0.3. Updates are available within the browser or from Mozilla’s website.

Current Software Versions

Adobe Flash Player

Adobe Reader DC 18.011.20035

Dropbox 48.4.58 [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 59.0.3 [Windows]

Internet Explorer 11.0.56

Java SE 8 Update 171 [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 41.16299.248.0

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 11.1 [Mac OS X Mavericks, Yosemite, El Capitan]


For Your IT Department

Cisco Multiple Products: Cisco has released updates for IOS and IOS XE, Wireless LAN Controller, WebEx, Prime Service, Secure Access Control System, Meeting Server, Aironet 1800, 1810, 1830 and 1850, IOS XR, 5500 and 8500 Series Wireless LAN Controller, Firepower System Software, Aironet APs Central Web Authentication, and more. Apply updates. Additional details are available on Cisco’s website.

Microsoft: Microsoft released an update for Windows Host Compute Service Shim (hcsshim). Apply updates. Additional details are available on Microsoft’s website and also The MITRE Corporation’s website: Common Vulnerabilities and Exposures (CVE®).


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 system(s) 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 cybersecurity 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 © 2018 Citadel Information Group. All rights reserved.

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