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Abine Blur 7.8.24x Authentication Bypass

Abine Blur 7.8.24x Authentication Bypass
Posted Mar 19, 2019
Authored by RS Tyler Schroder

The Password Manager Extension in Abine Blur versions 7.8.24x allows attackers to bypass the multi-factor authentication and macOS disk-encryption protection mechanisms, and consequently exfiltrate secured data, because the right-click context menu is not secured. NOTE: this vulnerability exists because of a CVE-2018-7213 regression.

tags | advisory, bypass
advisories | CVE-2018-7213, CVE-2019-6481
SHA-256 | d3eb22c37afbe328ea52dfe0b3495fc88d89d8a4c97d74acb0389578a1bbcf37

Abine Blur 7.8.24x Authentication Bypass

Change Mirror Download
=============================================

2FA & macOS Disk Encryption Bypass in Abine Blur 7.24*

=============================================



Topic: Abine Blur Password Manager Insecure Permissions



* Announced: 2019-03-18

* Credits: RS Tyler Schroder

* Affects: 7.8.242*

* Corrected: 2018-03-18

* Corrected V: 8.0.2478

* CVE Name: CVE-2019-6481



I. Background



Abine Blur is a privacy-focused suite of products focused on protecting your
privacy online. They accomplish this via multiple means including:

* Credit card masking (disposable credit card #s)
* Email masking (disposable emails)
* Cell phone masking (sms/voice capable)
* Password management



This suite is delivered via a web application (https://dnt.abine.com) and a
pair of browser extensions / mobile apps (iOS, Android).



II. Problem Description



The Password Manager Extension in Abine Blur 7.8.243* allows attackers to
bypass the Multi-Factor Authentication and macOS disk-encryption protection
mechanisms, and consequently exfiltrate secured data, because the
right-click context menu is not secured. NOTE: this vulnerability exists
because of a CVE-2018-7213 regression.






Abine Blur 7.8.242* failed to secure the right-click context menu, allowing
an attacker with either physical access or remote-desktop access to disclose
passwords, emails, and usernames of the victim *without* triggering a
second-factor request.



Additional details are online w/ POC @
https://redcoded.com/cve/2019/03/18/CVE.html?utm_source=fulldisc&utm_medium=
email





III. Impact



Access to secured data can lead to secure information exfiltration, a 2FA
bypass, and a further undisclosed MacOS(x) disk encryption console bypass
(to access secured Abine Blur data).



IV. Solution



Update your browser plug-in per your browser vendor's instructions. Firefox
6x and Chrome 63.x may automatically update to the latest version. The
Vendor has corrected the issue in version 8.0.2478 of the plugin.





V. Timeline of Events



* 2019-01-13: Discovery of Vulnerability

* 2019-01-14: Vendor Contacted & Response, Requests time to fix

* 2019-01-14: MITRE Contacted for CVE

* 2019-01-16: MITRE Confirms & Issues CVE (CVE-2019-6481)

* 2019-02-11: Vendor Contacted with request for update

* 2019-02-14: Vendor Response, reports fix is in processing/review with
browser stores, 2wks needed

* 2019-03-14: Vendor Issues 8.0.2478 for Chrome

* 2019-03-18: Vendor starts Mozilla / Opera approval process, OK's Public
Disclosure.





Respectfully,



R. S. Tyler Schroder



Redcoded.com

Cyber Operations Division
redorhcs@redcoded.com <mailto:redorhcs@redcoded.com>





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