A flaw was found in Podman. This vulnerability allows an attacker to create a specially crafted container that, when configured to share the same IPC with at least one other container, can create a large number of IPC resources in /dev/shm. The malicious container will continue to exhaust resources until it is out-of-memory (OOM) killed. While the malicious container's cgroup will be removed, the IPC resources it created are not. Those resources are tied to the IPC namespace that will not be removed until all containers using it are stopped, and one non-malicious container is holding the namespace open. The malicious container may be restarted, either automatically or by attacker control, repeating the process and increasing the amount of memory consumed. With a container configured to restart always, such as `podman run --restart=always`, this can result in a memory-based denial of service of the system.
This vulnerability has been scored with a CVSS base score of 7.7, indicating a high severity level. The attack vector is through the network, and the attack complexity is high, requiring low privileges and user interaction. The potential impact on confidentiality is high, while integrity is not affected, and availability is also high.
Risk to organizations includes potential memory exhaustion leading to service disruptions. Organizations should prioritize patching immediately to mitigate this risk.
Currently, there is no known public exploit or proof of concept available for this vulnerability. However, due to its high impact and exploitability, proactive measures are essential.
It is important for organizations using affected versions of Podman, OpenShift Container Platform, or Enterprise Linux to remain vigilant and apply updates as soon as they are available.
Vulnerability Details
The vulnerability identified as CVE-2024-3056 affects Podman and is classified under CWE-400: Uncontrolled Resource Consumption. The flaw allows malicious containers to exhaust system resources leading to a denial of service. Affected products include Podman, OpenShift Container Platform, and Enterprise Linux versions 8.0 and 9.0.
Technical Analysis
The root cause of this vulnerability stems from the improper management of IPC resources when multiple containers share the same IPC namespace. The attack vector is network-based, and the complexity is classified as high due to the need for specific configurations. Attackers require low privileges and user interaction to exploit this vulnerability.
Risk & Impact Analysis
The real-world risk associated with CVE-2024-3056 is significant, particularly for organizations that rely on containerized applications for critical operations. The potential for memory exhaustion could lead to widespread service disruptions, affecting both availability and reliability. The blast radius is broad, as any container sharing the IPC namespace is at risk. Organizations must evaluate their current usage of Podman and related technologies to determine impact.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
Affected versions include Podman versions up to and including 5.2.0, OpenShift Container Platform 4.0, Red Hat Enterprise Linux 8.0 and 9.0, and Fedora 40.
Mitigation & Remediation
Organizations should prioritize patching immediately by updating to the latest versions of affected products. For those unable to apply patches, consider implementing resource limits on containers or configuring them to not share IPC namespaces.Continuous penetration testing can help identify vulnerabilities in your deployment.
Detection Guidance
To detect potential exploitation, organizations should monitor logs for unusual container behavior, such as excessive memory consumption. Behavioral anomalies in running containers may indicate an attempt to exploit this vulnerability.
AppSecure Threat Intelligence Insight
CVE-2024-3056 highlights the ongoing challenges organizations face with container security and resource management. As containers become increasingly integral to cloud-native applications, understanding their vulnerabilities is critical. The low EPSS score suggests a lower probability of exploitation, but the potential impact remains concerning. Security teams should focus on strengthening their container security posture. For more insights, refer to our article on penetration testing methodology and consider implementing a robust vulnerability management program to address such vulnerabilities proactively.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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