CVE-2024-7646 is a high-severity vulnerability identified in ingress-nginx. This vulnerability allows an actor with permission to create Ingress objects (in the `networking.k8s.io` or `extensions` API group) to bypass annotation validation. As a result, arbitrary commands can be injected, leading to the potential compromise of the ingress-nginx controller's credentials. By default, these credentials provide access to all secrets within the cluster, amplifying the risk associated with this vulnerability.
The CVSS score for this vulnerability is 8.8, classifying it as high severity. This score reflects several critical factors, including the attack vector being network-based and the low complexity required to exploit the vulnerability. Organizations utilizing ingress-nginx should be aware of the immediate risks posed by this vulnerability, as the potential for unauthorized access to sensitive information is significant.
Currently, the vulnerability status is 'Awaiting Analysis.' However, it is crucial for organizations to assess their exposure and take proactive measures. Given the high exploitability and the potential impact, organizations should prioritize remediation actions to mitigate risks associated with this vulnerability.
Organizations should address this vulnerability in their priority patch cycle to prevent potential exploitation. The urgency is underscored by the fact that a successful exploitation could lead to severe consequences for the integrity and confidentiality of data within the Kubernetes cluster.
Vulnerability Details
The vulnerability allows an attacker to bypass validation mechanisms for annotations in Ingress objects. Officially described as a security issue discovered in ingress-nginx, this vulnerability has ramifications that extend to all secrets in the cluster by exploiting the ingress-nginx controller's credentials, which are inherently powerful.
This vulnerability has been assigned a CVSS score of 8.8, indicating a high severity level. The scoring reflects the attack vector being network-based, the low attack complexity, and the confidentiality, integrity, and availability impacts being high. The associated CWE classification is CWE-20, indicating improper input validation.
Technical Analysis
The root cause of this vulnerability stems from inadequate validation of annotations in the ingress-nginx setup. Attackers may leverage this flaw through network access, necessitating only low privileges to create Ingress objects. No user interaction is required, making exploitation straightforward. The vulnerability also poses a high impact on confidentiality, integrity, and availability due to the control over sensitive credentials.
Risk & Impact Analysis
Risk to organizations includes unauthorized access to sensitive credentials and data within the Kubernetes cluster. The blast radius of this vulnerability is significant, as it allows attackers to access all secrets in the cluster, which could lead to broader system compromises. Organizations should assess their exposure to ingress-nginx and prioritize remediation efforts to mitigate the associated risks.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | Yes |
Public PoC | Yes |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
All versions of ingress-nginx prior to the vendor patch are affected by this vulnerability. Organizations should consult the official channels for updates and patches.
Mitigation & Remediation
Organizations must prioritize patching ingress-nginx to remediate this vulnerability. The recommended actions include updating to the latest version that contains the fix for CVE-2024-7646. For those unable to apply the patch immediately, implementing network controls to restrict access to the ingress-nginx controller can help mitigate risk. Additionally, conducting a thorough review of existing configurations and annotations is advisable to ensure that they do not inadvertently expose sensitive information.
Organizations should validate remediation through penetration testing to identify similar weaknesses.
Detection Guidance
Monitoring logs for unauthorized changes to Ingress objects and unusual activity related to the ingress-nginx controller is critical. Organizations should implement behavioral monitoring to detect anomalies that may indicate an attempt to exploit this vulnerability. Additionally, maintaining an up-to-date inventory of secrets and their access controls can help in identifying potential breaches.
AppSecure Threat Intelligence Insight
The long-term significance of this vulnerability lies in its potential to compromise Kubernetes clusters, which are increasingly critical in modern infrastructure. This vulnerability represents a concerning trend in terms of improper input validation mechanisms within widely used software components. Security teams should take this opportunity to reassess their security posture and reinforce validation protocols to avoid similar vulnerabilities in the future.
Organizations can benefit from reviewing the vulnerability management program to enhance detection and response capabilities.
Additionally, leveraging insights from penetration testing methodology can inform strategic defensive measures against emerging threats.
Finally, understanding the implications of vulnerabilities like CVE-2024-7646 can guide organizations in implementing a robust security testing framework to proactively identify and mitigate similar risks.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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