A cybersecurity advisory was issued yesterday, Jan. 31, 2019, regarding multiple vulnerabilities in Google Chrome. The most severe of these could allow for arbitrary code execution.
What It Is:
Google Chrome is a web browser used to access the Internet. These vulnerabilities can be exploited if a user visits, or is redirected to, a specially crafted web page. Successful exploitation of the most severe of these vulnerabilities could allow an attacker to execute arbitrary code in the context of the browser, obtain sensitive information, bypass security restrictions and perform unauthorized actions, or cause denial-of-service conditions.
There are currently no reports of these vulnerabilities being exploited in the wild.
What It Means:
If your business or organization use Google Chrome, you will need to apply the stable channel update after appropriate testing to prevent a possible security breach.
Systems Affected Include:
• Google Chrome prior to 72.0.3626.81
• Large and medium government entities: High
• Small government entities: Medium
• Large and medium business entities: High
• Small business entities: Medium
Home users: Low
Multiple vulnerabilities have been discovered in Google Chrome, the most severe of which could result in arbitrary code execution. These vulnerabilities can be exploited if a user visits, or is redirected to, a specially crafted web page. Details of the vulnerabilities are as follows:
• Heap buffer overflow in SwiftShader. (CVE-2019-5771)
• Heap buffer overflow in WebGL. (CVE-2019-5770)
• Inappropriate implementation in QUIC Networking. (CVE-2019-5754)
• Inappropriate implementation in V8. (CVE-2019-5755)
• Incorrect security UI in WebAPKs. (CVE-2019-5767)
• Insufficient data validation in IndexedDB. (CVE-2019-5773)
• Insufficient policy enforcement in Blink. (CVE-2018-18350, CVE-2018-18349)
• Insufficient policy enforcement in Canvas. (CVE-2019-5766)
• Insufficient policy enforcement in DevTools. (CVE-2019-5768)
• Insufficient policy enforcement in Extensions. (CVE-2019-5778)
• Insufficient policy enforcement in Omnibox. (CVE-2019-5775)
• Insufficient policy enforcement in ServiceWorker. (CVE-2019-5779)
• Insufficient policy enforcement in the browser. (CVE-2019-5765)
• Insufficient policy enforcement in URL Formatter. (CVE-2018-18355, CVE-2018-18357)
• Insufficient policy enforcement. (CVE-2019-5780)
• Insufficient validation of untrusted input in Blink. (CVE-2019-5769)
• Insufficient validation of untrusted input in SafeBrowsing. (CVE-2019-5774)
• Insufficient validation of untrusted input in V8. (CVE-2019-5763)
• Inappropriate implementation in V8. (CVE-2019-5782)
• Out of bounds write in V8. (CVE-2018-18342, CVE-2018-17480)
• Type Confusion in SVG. (CVE-2019-5757)
• Use after free in Blink. (CVE-2019-5758)
• Use after free in HTML select elements. (CVE-2019-5759)
• Use after free in PDFium. (CVE-2019-5756)
• Use after free in Skia. (CVE-2018-18343, CVE-2018-18356)
• Use after free in SwiftShader. (CVE-2019-5761)
• Use after free in WebRTC. (CVE-2019-5764)
• Use after free in WebRTC. (CVE-2019-5760)
What To Do:
We recommend the following actions be taken:
• Apply the stable channel update provided by Google to vulnerable systems immediately after appropriate testing.
• Run all software as a non-privileged user (one without administrative privileges) to diminish the effects of a successful attack.
• Remind users not to visit untrusted websites or follow links provided by unknown or untrusted sources.
• Inform and educate users regarding the threats posed by hypertext links contained in emails or attachments especially from untrusted sources.
• Apply the Principle of Least Privilege to all systems and services.
Negative Consequences of Lost or Stolen Data:
The loss or theft of proprietary data can have severe impacts, particularly if the compromise becomes public and sensitive information is exposed. Possible impacts include:
• Temporary or permanent loss of sensitive or proprietary information.
• Disruption to regular operations.
• Financial losses incurred to restore systems and files.
• Potential harm to an organization’s reputation.
Should your agency or business need assistance with the detection of vulnerabilities in any of the above products or updates to include patches, Dox can help. Please contact Dox if there is anything we can do to assist in securing your agency, business, or organization.
Thank you for your time and stay safe online.