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    Rewterz Threat Advisory – CVE-2018-10938 – Linux Kernel Infinite Loop Vulnerability

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    March 21, 2023
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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 […]
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    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 […]
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    Rewterz Threat Advisory – CVE-2018-10938 – Linux Kernel Infinite Loop Vulnerability

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    March 21, 2023
    March 21, 2023
    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 […]

    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

    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.
    help

    CSR

    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.

    Connect with Us

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Rewterz
Rewterz Threat Advisory – Microsoft Windows ‘SchRpcSetSecurity()’ Privilege Escalation Vulnerability
August 29, 2018
Rewterz
Rewterz Threat Advisory – Exploitation of automatic DNS registration and auto-discovery
September 6, 2018

Rewterz Threat Advisory – CVE-2018-10938 – Linux Kernel Infinite Loop Vulnerability

September 6, 2018

A vulnerability in Linux Kernel, that can be exploited by people with malicious intent to cause a Denial of Service, has been patched.

 

IMPACT: MEDIUM

 

PUBLISH DATE: 06-09-2018

 

OVERVIEW

 

An error within the “cipso_v4_optptr()” function (net/ipv4/cipso_ipv4.c) of the Linux Kernel can be exploited to trigger an infinite loop. This leads to a Denial of Service, withholding an organization’s availability. The vulnerability has been patched in a recent update.

 

ANALYSIS

 

A flaw was found in the Linux kernel present since v4.0-rc1 and through v4.13-rc4. An attacker may force the kernel to enter an infinite loop in the cipso_v4_optptr() function in net/ipv4/cipso_ipv4.c by remotely sending a crafted network package. This leads to a denial-of-service.

 

An attacker needs to set up a certain non-default configuration of LSM (Linux Security Module) and NetLabel on a system in order to leverage this flaw. All the kernels with the cipso_v4_optptr() function which have not backported the upstream commit 40413955ee26 are vulnerable.

 

This attack is launched via network and may put an organization’s availability at stake if Denial of Service is successful. To combat this vulnerability, updates have been released by the vendor.

 

AFFECTED PRODUCTS

 

The vulnerability is reported in versions prior to 4.4.154 and prior to 4.9.125 along with some others.
• The Linux Kernel 4.4.x
• Linux Kernel 4.9.x
• Linux Kernel 4.0.5
• Linux Kernel 4.13

 

UPDATES

 

Update to version 4.4.154 or 4.9.125.

Platform

  • Rewterz XDR
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Managed Security Services

  • Managed Security Monitoring
  • Remote SOC
  • Onsite SOC
  • Hybrid SOC

Assess

  • Compromise Assessment
  • APT Assessment
  • Penetration Testing
  • Architecture Design & Review
  • Red Team Assessment
  • Purple Team Assessment
  • Social Engineering
  • Source Code Review

Transform

  • SOC Consultancy
  • SOC Maturity Assessment
  • SOC Model Evaluation
  • SOC Gap Analysis
  • SIEM Gap Analysis
  • SIEM Optimization
  • SOC Content Pack

Train

  • Simulated Cyber Attack Exercise
  • Tabletop Exercise
  • Security Awareness and Training

Respond

  • Incident Analysis
  • Incident Response

Threat Insights

  • Threat Advisories
  • Monthly Threat Insights
  • Threat Intelligence Reports

Resources

  • Blog
  • Press Releases

Connect With Us

  • Contact
  • Careers
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