External risk intelligence

Treck TCP/IP Stack IPv6 Vulnerability

CVE advisoryKnown Exploit

CVE-2020-11899

An issue in the Treck TCP/IP stack's IPv6 handling may allow unauthorized data access and modification. This could affect system integrity and availability, posing a business risk. Organizations using affected products should address this vulnerability.

2Halo Surface Signal

Out-of-bounds Read

Treck Tcp\/ip

before 6.0.1.66

External exposure likelihood

Halo Surface Signal score for CVE-2020-11899

This vulnerability resides in an embedded TCP/IP stack used within firmware for specific enterprise and networking hardware. While these devices operate on a network, they are typically deployed within internal, restricted, or segmented segments rather than being directly exposed to the public internet in standard configurations.

Horizon Alert

Summary of the vulnerability and why it matters

The Treck TCP/IP stack is susceptible to an issue within its IPv6 handling. This flaw allows for unauthorized data access and potential modification of information. The impact can include disruptions to network operations and compromise of sensitive data.

  • Vulnerable component: Treck TCP/IP stack
  • Core weakness: IPv6 out-of-bounds read
  • Main business impact: Data access and modification

Attack Path

How an attacker could exploit the issue

The Treck TCP/IP stack's IPv6 implementation contains an out-of-bounds read vulnerability. An attacker can exploit this by sending specially crafted IPv6 packets to an affected system. Successful exploitation could allow an attacker to potentially impact the confidentiality and integrity of data, and the availability of the system.

  • Adjacent network exposure required.
  • Attacker sends crafted IPv6 packets.
  • Triggers an out-of-bounds read.

Live Threat

Current exploitation, exposure, and threat context

This vulnerability impacts organizations that use the Treck TCP/IP stack, particularly in older versions before 6.0.1.66. Attackers on an adjacent network can exploit this to cause an out-of-bounds read, potentially leading to denial of service or information disclosure. Due to its inclusion in CISA's Known Exploited Vulnerabilities catalog, this threat should be treated with a high degree of urgency.

  • Likely attacker skill level: Low
  • Required access or conditions: Adjacent network access
  • Business risk or urgency: High

Priority actions

Operational Fix

Recommended remediation, mitigation, and detection steps

The Treck TCP/IP stack has an IPv6 Out-of-bounds Read vulnerability that affects organizations utilizing affected products. This vulnerability could potentially impact system integrity and availability, posing a business risk if exploited. Organizations should prioritize a structured response to address this issue and mitigate potential impacts.

  • Identify all affected assets.
  • Reduce exposure or isolate risk.
  • Apply vendor fixes, verify, and monitor.

Frequently asked questions

What is the Treck TCP/IP stack and what is it used for?

The Treck TCP/IP stack is a networking software component that enables devices to communicate over the internet using the TCP/IP protocol suite. It's utilized in various firmware implementations for network-enabled hardware.

What is CVE-2020-11899 and what kind of weakness is it?

CVE-2020-11899 is a vulnerability in the Treck TCP/IP stack that allows for an IPv6 Out-of-bounds Read. This weakness, categorized as CWE-125, means a program attempts to read data from memory locations outside of its allocated buffer.

How can CVE-2020-11899 be triggered by an attacker?

An attacker on an adjacent network can trigger this vulnerability by sending specially crafted IPv6 packets to an affected system. The vulnerability is not triggered by simply connecting to the affected system.

Who should be concerned about this vulnerability based on its Halo Surface Signal?

Organizations should be concerned if they have devices running the affected Treck TCP/IP stack that are accessible from an adjacent network. The Halo Surface Signal indicates this is an internal threat, meaning it's less likely to be directly exposed to the public internet but could still be a risk within a network.

What is the first step to address the Treck TCP/IP stack vulnerability?

The initial step is to identify all assets running the affected versions of the Treck TCP/IP stack within your environment. After identification, consider reducing exposure or isolating these assets until vendor fixes can be applied.

References