What is the CVSS score of CVE-2019-19922?

CVE-2019-19922 has a CVSS 3.1 base score of 5.5 (Medium). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H. EPSS exploitation probability: 0.9%.

Is there a public PoC exploit available for CVE-2019-19922?

Yes, a public proof-of-concept exploit is available for CVE-2019-19922. Prioritise patching immediately. EPSS: 0.9%.

Is there a patch available for CVE-2019-19922?

Yes, a patch is available for CVE-2019-19922. Update the affected software to the latest version immediately.

Kubernetes CVE-2019-19922

MEDIUM

Uncontrolled Resource Consumption (CWE-400)

2019-12-22 cve@mitre.org

Denial Of Service Linux Kubernetes Linux Kernel Sd Wan Edge Ubuntu Linux Debian Linux Active Iq Unified Manager Cloud Backup Data Availability Services E Series Santricity Os Controller Fas Aff Baseboard Management Controller Hci Baseboard Management Controller Solidfire Hci Management Node Steelstore Cloud Integrated Storage Aff Baseboard Management Controller Solidfire Baseboard Management Controller

5.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

5.5 MEDIUM

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

CVE Published

Dec 22, 2019 - 20:15 nvd

MEDIUM 5.5

DescriptionNVD

kernel/sched/fair.c in the Linux kernel before 5.3.9, when cpu.cfs_quota_us is used (e.g., with Kubernetes), allows attackers to cause a denial of service against non-cpu-bound applications by generating a workload that triggers unwanted slice expiration, aka CID-de53fd7aedb1. (In other words, although this slice expiration would typically be seen with benign workloads, it is possible that an attacker could calculate how many stray requests are required to force an entire Kubernetes cluster into a low-performance state caused by slice expiration, and ensure that a DDoS attack sent that number of stray requests. An attack does not affect the stability of the kernel; it only causes mismanagement of application execution.)

AnalysisAI

Technical ContextAI

This vulnerability is classified as Uncontrolled Resource Consumption (CWE-400), which allows attackers to cause denial of service by exhausting system resources. kernel/sched/fair.c in the Linux kernel before 5.3.9, when cpu.cfs_quota_us is used (e.g., with Kubernetes), allows attackers to cause a denial of service against non-cpu-bound applications by generating a workload that triggers unwanted slice expiration, aka CID-de53fd7aedb1. (In other words, although this slice expiration would typically be seen with benign workloads, it is possible that an attacker could calculate how many stray requests are required to force an entire Kubernetes cluster into a low-performance state caused by slice expiration, and ensure that a DDoS attack sent that number of stray requests. An attack does not affect the stability of the kernel; it only causes mismanagement of application execution.) Affected products include: Linux Linux Kernel, Oracle Sd-Wan Edge, Canonical Ubuntu Linux, Debian Debian Linux, Netapp Active Iq Unified Manager. Version information: before 5.3.9.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Implement rate limiting, set resource quotas, validate input sizes, use timeouts.