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March 22, 2023Severity Medium Analysis Summary Mekotio is a banking trojan that targets users in Latin America and Europe. It is primarily distributed via phishing emails and infected […]March 22, 2023Analysis Summary Overview – 23rd Mar – A Big Day – As we approach the 23rd of March, Pakistan Day, organizations and individuals should be aware […]March 22, 2023Severity High Analysis Summary CVE-2023-28684 CVSS:7.1 Jenkins remote-jobs-view-plugin Plugin could allow a remote authenticated attacker to obtain sensitive information, caused by improper handling of XML external […]Threat Insights
Before Rewterz got its start, the market was in dire need of a specialized and dedicated information security company. It was nearly impossible for businesses to find a trustworthy provider that could truly cover all of their bases. We wanted to meet this need, giving companies across the globe a chance to get ahead while knowing that their data is in good hands.
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Platform
Managed Security Services
Managed Penetration Testing
Rewterz penetration testing services help organizations determine if a cyber attacker can gain access to their critical assets while giving them detailed insights of the overall business impact of a cyber attack.
Resources
March 22, 2023Severity Medium Analysis Summary Mekotio is a banking trojan that targets users in Latin America and Europe. It is primarily distributed via phishing emails and infected […]March 22, 2023Analysis Summary Overview – 23rd Mar – A Big Day – As we approach the 23rd of March, Pakistan Day, organizations and individuals should be aware […]March 22, 2023Severity High Analysis Summary CVE-2023-28684 CVSS:7.1 Jenkins remote-jobs-view-plugin Plugin could allow a remote authenticated attacker to obtain sensitive information, caused by improper handling of XML external […]Threat Insights
Before Rewterz got its start, the market was in dire need of a specialized and dedicated information security company. It was nearly impossible for businesses to find a trustworthy provider that could truly cover all of their bases. We wanted to meet this need, giving companies across the globe a chance to get ahead while knowing that their data is in good hands.
Connect with Us
Rewterz Threat Alert – Kimsuky APT group – IOCs
April 13, 2021Rewterz Threat Alert – Golden chickens and more eggs luring professionals through LinkedIn
April 13, 2021
Severity
Medium
Analysis Summary
A security researcher, Rajvardhan Agarwal, released a working exploit on Twitter that enables remote code execution in Chromium browsers for the V8 JavaScript engine. This zero-day vulnerability (really a one-day vulnerability) affects both Chrome and Microsoft Edge.
A patch has not been rolled out by google yet, but the latest version of V8 JavaScript fixes this vulnerability.
Working:
The PoC HTML file and a corresponding JavaScript file are loaded in any chromium-based browser. From there, the vulnerabilities in the browsers are exploited, and the calc.exe program (Windows calculator) is launched.
This exploit resembles the Type Mismatch bug used by Niklas Baumstark and Bruno Keith in the Pwn2Own 2021 competition.
The exploit also affects Opera and Brave browsers.
However, for the exploit to work, it needs to be chained with another exploit/vulnerability that can escape the Chromium sandbox. As the chrome sandbox prevents remote code execution and does not allow vulnerabilities to launch programs on host computers, the exploit cannot function alone.
Impact
Remote code execution
Affected Vendors
- Microsoft
Affected Products
- Google Chrome
- Microsoft Edge
- Opera
- Brave
Remediation
- Download the latest security plugins like the opera openSUSE-2021-296 and chromium security updates.
- The exploit cannot function alone and requires another exploit to escape the google sandbox, therefore, the best course of action is to update the relative patches and install the latest updates.
- While Google has not released a patch yet, a new patch update is set to release in the next week.