Adobe Flash Vulnerability Can Lead to Code Execution and Asset Takeover (CVE-2018-15982)

Ryan Seguin

Adobe has issued an out-of-band advisory for CVE-2018-15982. Through the use of a maliciously crafted RAR file, an attacker exploiting this vulnerability can take over the machine of users that run it.

Background

Adobe has released an out-of-band security bulletin. that includes patches for CVE-2018-15982, a critical arbitrary code execution vulnerability in Adobe Flash which has been used to allegedly attack Polyclinic No. 2, which is affiliated with the Presidential Administration of Russia. Users are encouraged to update all applications that incorporate Flash.

Analysis

The attack requires a user to open and run a malicious file that takes advantage of a dangling pointer, allowing the attacker to insert their code into the target’s memory, which Flash then executes. As with most code execution vulnerabilities, this vulnerability establishes a backdoor or similar foothold on the target.

In spear phishing campaigns, attacks are often designed to appear as legitimate emails, documents or tools, such as a Chrome extension that the organization often uses. In this case, attackers created a fake employee survey document that users understandably believed they needed to complete.

Fake Employee Survey

Source: 360 Core Security

Proof of concept

360 Core Security, one of the groups credited by Adobe with discovering this vulnerability, has an excellent technical write-up on how this attack works, and specifically how it was allegedly used against the Polyclinic site.

Once the payload is delivered, it disguises itself as an Nvidia driver application to further obfuscate infection.

Adobe has issued an out-of-band advisory for CVE-2018-15982

Source: 360 Core Security

Solution

Adobe’s advisory provides the following information on updating Flash:

  • Adobe recommends users of the Adobe Flash Player Desktop Runtime for Windows, macOS and Linux update to Adobe Flash Player 32.0.0.101 via the update mechanism within the product* or by visiting the Adobe Flash Player Download Center.
  • Adobe Flash Player installed with Google Chrome will be automatically updated to the latest Google Chrome version, which will include Adobe Flash Player 32.0.0.101 for Windows, macOS, Linux and Chrome OS.
  • Adobe Flash Player installed with Microsoft Edge and Internet Explorer 11 for Windows 10 and 8.1 will be automatically updated to the latest version, which will include Adobe Flash Player 32.0.0.101.

*Note: Users who have selected the option to 'Allow Adobe to install updates' will receive the update automatically. Users who do not have the 'Allow Adobe to install updates' option enabled can install the update via the update mechanism within the product when prompted.

Identifying affected systems

A list of Nessus plugins to identify this vulnerability will appear here as they’re released.

Get more information

Learn more about Tenable, the first Cyber Exposure platform for holistic management of your modern attack surface. Get a free 60-day trial of Tenable.io Vulnerability Management.

Read more >

Published on Dec 5, 2018

People also viewed

Customer Success Manager - ANZ

North Sydney Australia Pacific Highway, North Sydney, Australia, NSW 2060 Customer Success Sales
Your Role:Tenable has an immediate need for a Customer Success Manager who will be responsible for establishing and driving sales activities for our software products within a designated geography.Companies today are grappling with an ever expandi...

Finance & Investor Relations Intern

Columbia Maryland United States Columbia Gateway Drive, Columbia, Maryland, United States, 21046 Finance Internships
Your Role:Tenable has a Finance and Investor Relations Intern opportunity for college students entering their senior year or actively enrolled in an MBA program. If you're looking for a chance to apply what you're learning in your degree program, ...

Field and Channel Marketing Manager, Nordics and Benelux

Uxbridge United Kingdom Furzeground Way , Stockley Park, Uxbridge, United Kingdom, UB11 1EZ Field & Channel Marketing Marketing
Your Role:Tenable seeks an experienced field and channel marketing manager to generate demand for Tenable products and solutions across our Scandinavia and Benelux territories.  The successful candidate will have demonstrated experience creating, ...

Senior Data Engineer

Dublin Ireland Campshires, Sir John Rogerson's Quay, Dublin, Ireland Research Engineering
Your Role:Data Engineers here are involved in designing, developing and maintaining systems for data analysis, transformation, modelling and visualisation. We work directly with the data scientists to develop cutting edge uses of the data we colle...

Technical Support Manager

Columbia Maryland United States Columbia Gateway Drive, Columbia, Maryland, United States, 21046 Technical Support Technical Support
Your Role:Tenable is seeking a high energy, results oriented customer advocate capable of motivating an already exceptional support team to even higher levels of customer satisfaction. Our current global rating is over 93% satisfaction and we expe...

Cloud Security Intern

Columbia Maryland United States Columbia Gateway Drive, Columbia, Maryland, United States, 21046 Information Security Internships
Your Role: The Cloud Security Intern will help the Tenable secure their use of cloud systems across the company.  The intern will develop, implement and monitor security solutions for cloud that assess risk, keep Tenable data safe and bake in secu...

We have big plans for continued global growth, and we’re looking for people who are creative, flexible and dedicated to helping us build something great – something that matters.