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    Rewterz Threat Advisory – CVE-2018-15439 – Cisco Small Business Switches Privileged Access Vulnerability

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    March 25, 2023
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    Rewterz Threat Alert – GandCrab or .CRAB Ransomware – Active IOCs
    Severity Medium Analysis Summary GandCrab – a ransomware-as-a-service variant – was discovered in early 2018. At least five versions of GandCrab have been created since its […]
    March 25, 2023
    March 25, 2023
    Rewterz Threat Alert – NJRAT – Active IOCs
    Severity Medium Analysis Summary NjRat is a Remote Access Trojan, which is found leveraging Pastebin to deliver a second-stage payload after initial infection. There are multiple […]
    March 24, 2023
    March 24, 2023
    Rewterz Threat Advisory – CVE-2023-20113 – Cisco SD-WAN vManage Software Vulnerability
    Severity Medium Analysis Summary CVE-2023-20113  Cisco SD-WAN vManage Software is vulnerable to cross-site request forgery, caused by improper validation of user-supplied input. By persuading an authenticated […]

    Threat Insights

    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

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    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.
    help

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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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Rewterz Threat Advisory – CVE-2019-2550 & CVE-2019-2549 – Oracle FLEXCUBE Direct Banking “Logoff Page” Vulnerabilities
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January 21, 2019

Rewterz Threat Advisory – CVE-2018-15439 – Cisco Small Business Switches Privileged Access Vulnerability

January 21, 2019

SEVERITY: High

 

 

ANALYSIS SUMMARY

 

 

A vulnerability in the Cisco Small Business Switches software could allow an unauthenticated, remote attacker to bypass the user authentication mechanism of an affected device. The vulnerability exists because under specific circumstances, the affected software enables a privileged user account without notifying administrators of the system.

An attacker could exploit this vulnerability by using this account to log in to an affected device and execute commands with full admin rights.

 

 

IMPACT

 

 

Authentication bypass
Privileged access

 

 

AFFECTED PRODUCTS

 

 

  • Cisco Small Business 200 Series Smart Switches
  • Cisco Small Business 300 Series Managed Switches
  • Cisco Small Business 500 Series Stackable Managed Switches
  • Cisco 250 Series Smart Switches
  • Cisco 350 Series Managed Switches
  • Cisco 350X Series Stackable Managed Switches
  • Cisco 550X Series Stackable Managed Switches

 

 

REMEDIATION

 

 

Vendor has not released any update/ patch for the vulnerability yet. However, Cisco suggests the following work-around for this flaw:

“The workaround consists of adding at least one user account with access privilege set to level 15 in the device configuration. The following example shows how to configure an account by using admin as user ID, setting the access privilege to level 15, and defining the password by replacing with a complex password chosen by the user. By adding this user account, the default privileged account will be disabled.

 

Switch# configure terminal Switch(config)# username admin privilege 15 password <strong_password>

 

The command show running-config | include privilege 15 will now produce the following output:

Switch# show running-config | include privilege 15 username admin password encrypted privilege 15″

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Transform

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