External risk intelligence

Keysight IxChariot Endpoint Stack Overflow Vulnerability.

CVE advisorySeverity: CRITICAL (CVSS 9.3)

CVE-2017-20242

The affected component is a testing endpoint used in network performance assessment. While these endpoints are designed to receive network traffic to measure performance, they are typically deployed within private, controlled lab or corporate testing environments rather than exposed directly to the public internet, making internet-facing exposure possible but not a standard deployment pattern.

Buffer Overflow

Halo Surface Signal: 3 out of 5 — possibly public-facing.

External exposure likelihood

Horizon Alert

Summary of the vulnerability and why it matters

Keysight IxChariot Endpoint software, used for network performance testing, has a critical vulnerability that could allow an unauthenticated remote attacker to crash the system or potentially execute code. The main concern is confirming relevance and exposure to our operations.

Unauthenticated remote code execution risk.
Crucial to verify if this testing tool is in use.
Assess business impact and exposure.

Attack Path

How an attacker could exploit the issue

An attacker could target the Keysight IxChariot Endpoint by sending a specially crafted network packet. This packet would exploit a buffer overflow vulnerability in the endpoint, potentially leading to a system crash or unauthorized code execution. The attacker does not need any prior authentication or access to trigger this vulnerability.

No authentication or access required.
Vulnerable to crafted network packets.
Risk of crash or code execution.

Live Threat

Current exploitation, exposure, and threat context

This vulnerability could allow an unauthenticated remote attacker to crash the Keysight IxChariot endpoint or potentially execute arbitrary code by sending a specially crafted packet. This could affect the availability and integrity of the testing service when supported by the advisory.

Endpoint service availability.
Specially crafted network packets.
Service disruption or code execution.

Operational Fix

Recommended remediation, mitigation, and detection steps

The vulnerability in Keysight IxChariot Endpoint necessitates action from teams responsible for network testing infrastructure. The first step is to inventory all IxChariot endpoints, assess their network accessibility and criticality to business operations, identify the specific owners for each instance, and then prioritize remediation efforts based on risk.

Identify IxChariot endpoint owners.
Verify network reachability and criticality.
Plan remediation based on identified risk.

Supplementary metadata

CVSS vector

Validate whether this threat affects your internet-facing exposure.

Halo Threat Intelligence helps prioritize remediation with Halo Surface Signal and H/A/L/O context. Start exposure validation with a free external attack surface trial.

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Frequently asked questions

What is Keysight IxChariot Endpoint?

Keysight IxChariot Endpoint is a software component designed for network performance testing. Engineers deploy these endpoints across various network segments to generate, receive, and analyze traffic, allowing them to measure latency, throughput, and reliability in lab or corporate infrastructure environments.

What is the vulnerability in CVE-2017-20242?

This vulnerability is a stack-based buffer overflow, classified as CWE-121. It occurs when the software receives more data than its memory buffer can hold, causing it to overwrite adjacent memory. In this case, a specifically crafted network packet can trigger this flaw, which may lead to an unexpected system crash or provide an opportunity for an attacker to execute arbitrary code.

How is the buffer overflow triggered?

An unauthenticated remote attacker triggers this issue by sending a specially crafted network packet directly to the endpoint. It is important to note that legitimate network performance testing traffic does not trigger this condition; only packets designed to exploit the memory handling flaw will cause the system to crash or execute unauthorized code.

Is my environment at risk from this CVE?

According to Halo Surface Signal, risk depends on how your endpoints are deployed. While these testing tools are often isolated within private, controlled lab or corporate networks, they may be at higher risk if they are incorrectly exposed to the public internet. You should determine if any endpoints are reachable from outside your protected internal environment.

Do I need to take action to secure my endpoints?

Yes, if you use this software, your first step is to perform an inventory to locate all active IxChariot endpoints in your network. Once identified, verify their network accessibility and assess their criticality to your operations. Use this information to prioritize which instances require immediate attention or updates.

References

Written by Nicholas Merritt

Nicholas Merritt is VP of Security Solutions at Halo Security. With more than 25 years across application security, vulnerability prioritization, and offensive security, he helps teams translate threat data into practical exposure validation and remediation focus. He authors Halo Threat Intelligence CVE advisories using Halo Surface Signal and H/A/L/O context to prioritize internet-facing risk.