National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2019-19922 Detail

Current Description

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.)

Source:  MITRE
View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score: 5.5 MEDIUM
Vector:  CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.9 Mailing List Patch Vendor Advisory
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=de53fd7aedb100f03e5d2231cfce0e4993282425 Mailing List Patch Vendor Advisory
https://github.com/kubernetes/kubernetes/issues/67577 Issue Tracking Patch Third Party Advisory
https://github.com/torvalds/linux/commit/de53fd7aedb100f03e5d2231cfce0e4993282425 Patch Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/01/msg00013.html
https://relistan.com/the-kernel-may-be-slowing-down-your-app Exploit Third Party Advisory
https://security.netapp.com/advisory/ntap-20200204-0002/
https://usn.ubuntu.com/4226-1/ Third Party Advisory

Weakness Enumeration

CWE-ID CWE Name Source
CWE-400 Uncontrolled Resource Consumption NIST  

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (excluding)
5.3.9


Change History

4 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2019-19922
NVD Published Date:
12/22/2019
NVD Last Modified:
01/18/2020