What We Do
How we do it
Resources
SECURITY ADVISORIES
May 11, 2022
CVE-2022-26923 - Active Directory Domain Services Elevation of Privilege Vulnerability
THE THREAT Microsoft has disclosed a new vulnerability impacting Active Directory Certificate Services (ADCS) tracked as CVE-2022-26923 (Active Directory Domain Services Elevation of Privilege Vulnerability). If exploited successfully, an authenticated attacker can escalate privileges in environments where ADCS is running on the domain. eSentire is aware of technical details and tooling [2] for…
Read More
View all Advisories →
Company
ABOUT ESENTIRE
About Us
eSentire is The Authority in Managed Detection and Response Services, protecting the critical data and applications of 1200+ organizations in 75+ countries from known and unknown cyber threats. Founded in 2001, the company’s mission is to hunt, investigate and stop cyber threats before they become business disrupting events.
Read about how we got here
Leadership Work at eSentire
LATEST PRESS RELEASE
May 17, 2022
Cybersecurity Leader eSentire Continues Its Commitment to Rigorous Security Standards Earning PCI DSS Certification
Waterloo, ON, May 17, 2022 — eSentire, the Authority in Managed Detection and Response (MDR), maintains one of the most secure and robust IT environments of any MDR provider in the industry. To that end, eSentire today announced that it has received the Payment Card Industry Data Security Standard (PCI DSS) certification, considered one of the most stringent and comprehensive payment card…
Read More
Partners
PARTNER PROGRAM
e3 Ecosystem
We provide sophisticated cybersecurity solutions for Managed Security Service Providers (MSSPs), Managed Service Providers (MSPs), and Value-Added Resellers (VARs). Find out why you should partner with eSentire, the Authority in Managed Detection and Response, today.
Learn more
ECOSYSTEM PARTNER RESOURCES
Apply to become an e3 ecosystem partner with eSentire, the Authority in Managed Detection and Response.
Login to the Partner Portal for resources and content for current partners.
Search
Resources
Security advisories — Jun 19, 2019

Firefox Zero-Day Vulnerability

Speak With A Security Expert Now

The Threat

On June 18th, 2019, Mozilla released a critical advisory (CVE-2019-11707) for a 'type confusion' vulnerability that is being actively exploited in the wild [1]. If successful, exploitation enables remote malicious actors to take full control of any vulnerable system(s).

The researcher that discovered this flaw indicates the bug can be exploited for UXSS (Universal Cross-Site Scripting) or RCE (Remote Code Execution) [2]. While both methods are serious, it is worth noting RCE would require additional complexities for successful exploitation (e.g. sandbox escape), while UXSS is a type of attack that could necessitate the execution of malicious code via client-side vulnerabilities.

Mozilla has indicated the following versions are fixed and protected against this critical flaw: 67.0.3 and Firefox ESR 60.7.1 [3]. It is highly recommended to apply the security patches after performing a business impact review, as attacks exploiting CVE-2019-11707 are already occurring.

What we’re doing about it

What you should do about it

Additional information

The vulnerability resides in the Array.pop file which is an array method is used by Firefox in JavaScript objects. There are not currently any workarounds for this issue outside of applying security patches. If not already enabled, it is recommended to turn on auto-updates for Firefox [4].

Attacks in the wild are speculatively believed to be financially motivated and targeting cryptocurrency exchanges.

References:

[1] https://www.mozilla.org/en-US/security/advisories/mfsa2019-18/

[2] https://twitter.com/5aelo/status/1141273396958900224

[3] https://www.securityfocus.com/bid/108810/info

[4] https://www.technipages.com/enable-disable-automatic-updates-in-firefox

View Most Recent Blogs