Thursday, March 28, 2024

Anonymous Hacker Leaked Another 2 Windows Zero-day Exploit in GitHub

SanboxEscaper, an anonymous hacker, exploit writer leaked two more Windows zero-day bug in Github along with exploit code.

Yesterday, she published a 5th Zero-day bug (1, 2, 3, 4, 5 ) that resides in Windows Task Scheduler let attackers perform a local privilege escalation (LPE) and gain complete control of fully patched current version of Windows 10.

Today there are two more new zero-days that she leaked with exploits code, which is an Internet Explorer 11 SandboxEscape and the another zero-day marked as “InstallerBypass.”

IE 11 SandboxEscape Zero-day

Internet Explorer 11 sandbox escape zero-day allows attackers to inject the malicious code into the sandboxed iexplore.exe and bypass the protection mode.

SanboxEscaper released a video as a guide where the bug has been demonstrated using her exploit code.

Zero-day Exploit that released by SanboxEscaper will trigger the vulnerability in IE 11 by injecting malicious DLL in a specific process (iexplore.exe).

Once the exploit successfully exploited, it allows the opening of windows filepickers through a broker and the IL javascript execution.

At this point, The zero-day trigger the IE RCE to bypass the protection mode and disable it. You can see this process in the above video, where she demonstrates with her exploit code.

InstallerBypass Zero-day

The installer bypass vulnerability can be triggered by capturing the rollback scripts, and to inject the files through Windows Installer “msiexec.” The timing to execute the PoC is minimal, it needs to be demonstrated before it writes the Discretionary Access Control List.

SandboxEscaper created an executable, polarbear[.]exe, when the executable is triggered through windows the installer or msiexec and if the repair flag passed along with installation, you get some additional time to trigger the vulnerability.ability.

If the PoC execution is successful, then it writes oops.dll into the system32 folder. SandboxEscaper said. See the demo video below.

Attackers can trigger the vulnerability to deploy the malware by passing the silent flag to hide installer UI and to run the process in background.

Also SandboxEscaper posted a statement in her blogspot says,

There’s two more bugs on github

“F*ck this shitty industry. I don’t plan to make a career in it anyway.”

“I hate all the people involved in this industry.”

“Everyone just thinks they know better. Everyone just loves pointing fingers. Bunch of apes.”

You can follow us on Linkedin, Twitter, Facebook for daily Cybersecurity updates also you can take the Best Cybersecurity courses online to keep your self-updated.

Website

Latest articles

GoPlus’s Latest Report Highlights How Blockchain Communities Are Leveraging Critical API Security Data To Mitigate Web3 Threats

GoPlus Labs, the leading Web3 security infrastructure provider, has unveiled a groundbreaking report highlighting...

Wireshark 4.2.4 Released: What’s New!

Wireshark stands as the undisputed leader, offering unparalleled tools for troubleshooting, analysis, development, and...

Zoom Unveils AI-Powered All-In-One AI Work Workplace

Zoom has taken a monumental leap forward by introducing Zoom Workplace, an all-encompassing AI-powered...

iPhone Users Beware! Darcula Phishing Service Attacking Via iMessage

Phishing allows hackers to exploit human vulnerabilities and trick users into revealing sensitive information...

2 Chrome Zero-Days Exploited at Pwn2Own 2024: Patch Now

Google has announced a crucial update to its Chrome browser, addressing several vulnerabilities, including...

The Moon Malware Hacked 6,000 ASUS Routers in 72hours to Use for Proxy

Black Lotus Labs discovered a multi-year campaign by TheMoon malware targeting vulnerable routers and...
Balaji
Balaji
BALAJI is an Ex-Security Researcher (Threat Research Labs) at Comodo Cybersecurity. Editor-in-Chief & Co-Founder - Cyber Security News & GBHackers On Security.

Mitigating Vulnerability Types & 0-day Threats

Mitigating Vulnerability & 0-day Threats

Alert Fatigue that helps no one as security teams need to triage 100s of vulnerabilities.

  • The problem of vulnerability fatigue today
  • Difference between CVSS-specific vulnerability vs risk-based vulnerability
  • Evaluating vulnerabilities based on the business impact/risk
  • Automation to reduce alert fatigue and enhance security posture significantly

Related Articles