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    Rewterz Threat Alert – Rhadamanthys Stealer – Active IOCs
    Severity Medium Analysis Summary Rhadamanthys is a type of malware known as a stealer, which is designed to steal sensitive information from infected computers. It was […]
    March 21, 2023
    March 21, 2023
    Rewterz Threat Alert – Mirai Botnet aka Katana – Active IOCs
    Severity High Analysis Summary The Mirai botnet is a type of malware that infects Internet of Things (IoT) devices, such as routers, security cameras, and other […]
    March 21, 2023
    March 21, 2023
    Rewterz Threat Alert – LockBit Ransomware – Active IOCs
    Severity High Analysis Summary LockBit ransomware takes as little as five minutes to deploy the encryption routine on target systems once it lands on the victim […]

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    16
    pdf-file (1)
    Annual Threat Intelligence Report 2022
    • Threat Advisories
    • Monthly Threat Insights
    • Threat Intelligence Reports
  • Why Rewterz?

    About Us

    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.

    Read More

    play_btn_Smallplay_btn_hover_Small
    leadership

    Our Leadership

    Our leadership team brings together years of knowledge and experience in cybersecurity to drive our company's mission and vision. Our team is passionate about delivering high-quality products and services, leading by example and assisting our clients in securing their organization’s environment.
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    At Rewterz, we believe that businesses have a responsibility to impact positively and contribute to the well-being of our communities as well as the planet. That's why we are committed to operating in a socially responsible and sustainable way.

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British Airways faces Data Breach of 380,000 Accounts
September 18, 2018
Rewterz
Rewterz Threat Advisory – CVE-2018-11763 – Apache HTTP Server SETTINGS Frames Denial of Service Vulnerability
September 26, 2018

Rewterz Threat Advisory – Microsoft Windows 7 Jet Database Engine Out-Of-Bounds Memory Access Vulnerability

September 25, 2018

A vulnerability has been reported in Microsoft Windows 7, which can be exploited by malicious people to execute remote code on system.

 

 

IMPACT:  NORMAL

 

 

PUBLISH DATE:  25-09-2018

 

 

OVERVIEW

 

 

A vulnerability in Microsoft Windows JET Database Engine could allow for remote code execution. A number of applications like Microsoft Access, Microsoft Visual Basic, and third-party applications get data access by the JET Database Engine. When this vulnerability is exploited successfully, it lets attackers execute a remote code in the context of the current process and misuse the privileges associated with the process.

 

 

It may involve installing programs; viewing, changing or deleting data; or even creating new accounts with full user privileges. Processes configured to have administrative privileges can be more harmful if exploited.

 

 

This attack however would require user interaction as it requires the targeted user to visit some malicious page or open a malicious file. The specific flaw exists within the management of indexes in the Jet database engine. Crafted data in a database file can trigger a write past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code under the context of the current process.

 

 

ANALYSIS

 

 

This vulnerability is due to an out-of-bounds write error. Specifically, this issue exists within the management of indexes. When a user is convinced to open a specially crafted Jet data source via OLEDB, this vulnerability can be exploited.

 

 

Microsoft has already patched two other issues in the JET this September. The already patched bugs were buffer overflows; however, this additional bug is actually an out-of-bounds write, which can be triggered by opening a Jet data source via OLEDB.

 

 

When a user opens a specially crafted file containing data stored in the JET database format, the vulnerability is triggered.  This vulnerability may proceed to cause a Denial of Service (DoS).

 

This crash is yielded by the issue:

 

 

 

 

AFFECTED PRODUCTS

 

 

Microsoft Windows 7

 

(Note: Only Windows 7 has been confirmed vulnerable but the exploited component is included in all supported versions of Windows, including server editions.)

 

 

MITIGATION

 

 

No patch for the vulnerability has yet been released. It is expected that Microsoft will soon patch the vulnerability in the upcoming October patch release. Until then, vigilant behavior is the only solution to avoid falling victim to this vulnerability.

 

Zero Day Initiative also suggests that users should restrict interaction of the application with trusted and confidential files.

 

 

 

If you think you’re the victim of a cyber-attack, immediately send an email to info@rewterz.com.

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  • Social Engineering
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Transform

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  • SIEM Gap Analysis
  • SIEM Optimization
  • SOC Content Pack

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  • Tabletop Exercise
  • Security Awareness and Training

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  • Incident Analysis
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