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CVE-2023-25151 Explained : Impact and Mitigation

Learn about CVE-2023-25151, a DoS vulnerability in `opentelemetry-go-contrib` version 0.38.0, impacting high cardinality metrics. High severity with base score of 7.5.

This CVE-2023-25151 involves a Denial of Service (DoS) vulnerability related to high cardinality metrics in

opentelemetry-go-contrib
.

Understanding CVE-2023-25151

This CVE identifies a vulnerability in the

opentelemetry-go-contrib
collection of extensions for OpenTelemetry-Go that can lead to uncontrolled resource consumption, potentially resulting in a DoS attack.

What is CVE-2023-25151?

The

opentelemetry-go-contrib
extension, specifically version 0.38.0, utilizes certain functions that can cause an increase in memory allocation due to the nature of metric measurements it performs. This vulnerability stems from the handling of unique URIs with constantly changing query strings, leading to a high cardinality of measurements that can be exploited for a DoS attack.

The Impact of CVE-2023-25151

This vulnerability has a high severity rating with a base score of 7.5, indicating a significant impact on system availability. Hackers could potentially exploit this flaw to consume excessive resources, resulting in service disruption or unresponsiveness.

Technical Details of CVE-2023-25151

The vulnerability is categorized under CWE-400 (Uncontrolled Resource Consumption) and has been rated with a base severity level of "HIGH".

Vulnerability Description

The issue lies in the metric instruments used in

opentelemetry-go-contrib
, where the handling of unique URIs with dynamic query strings can lead to continuous memory allocation, facilitating a DoS attack vector.

Affected Systems and Versions

The vulnerability affects the

opentelemetry-go-contrib
version 0.38.0. Systems within the range of version
>= 0.38.0, < 0.39.0
are vulnerable to this issue.

Exploitation Mechanism

Exploiting this vulnerability involves leveraging the uncontrolled resource consumption caused by the continuous increase in memory allocated for metric measurements based on unique URIs with varying query strings.

Mitigation and Prevention

It is crucial for users to take immediate action to mitigate the risks associated with CVE-2023-25151 and prevent potential exploitation.

Immediate Steps to Take

Users are strongly advised to upgrade to version 0.39.0 of

opentelemetry-go-contrib
to address the vulnerability. Upgrading to the patched version will help prevent the exploitation of this DoS vulnerability.

Long-Term Security Practices

Incorporating regular security updates and staying informed about software vulnerabilities and patches is essential for maintaining a secure software environment and mitigating potential threats.

Patching and Updates

Keeping software up to date with the latest security patches and releases is crucial for addressing known vulnerabilities and enhancing overall system security. Regularly monitoring for security advisories and promptly applying patches can help prevent exploitation of vulnerabilities like CVE-2023-25151.

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