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CVE-2019-19922

CVE information

Published

4 years ago

Last Modified

1 year ago

CVSSv2.0 Severity

Low

CVSSv3.1 Severity

Medium

Impact Analysis

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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.).

CVSSv2.0 Score

Severity
Low
Base Score
2.1/10
Exploit Score
3.9/10
Access Vector
Local
Access Complexity
Low
Authentication Required
None
Impact Score
2.9/10
Confidentiality Impact
None
Availability Impact
Partial
Integrity Impact
None

CVSSv3.1 Score

Severity
Medium
Base Score
5.5/10
Exploit Score
1.8/10
Access Vector
Local
Access Complexity
Low
Privileges Required
Low
Impact Score
3.6/10
Confidentiality Impact
None
Availability Impact
High
Integrity Impact
None
Scope
Unchanged
User Interaction
None

Products Affected

CPE Affected Vulnerable Excluding Edit
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
  Yes
- 5.3.9
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
  Yes
- -
cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:oracle:sd-wan_edge:8.2:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:netapp:steelstore_cloud_integrated_storage:-:*:*:*
  Yes
- -
cpe:2.3:a:netapp:data_availability_services:-:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:netapp:solidfire_\&_hci_management_node:-:*:*:*:*:
  Yes
- -
cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_
  Yes
- -
cpe:2.3:h:netapp:solidfire_baseboard_management_controller:-
  Yes
- -
cpe:2.3:a:netapp:fas\/aff_baseboard_management_controller:-:
  Yes
- -
cpe:2.3:a:netapp:e-series_santricity_os_controller:*:*:*:*:*
  Yes
11.0 -
cpe:2.3:a:netapp:hci_baseboard_management_controller:h610s:*
  Yes
- -
cpe:2.3:h:netapp:aff_baseboard_management_controller:a700:*:
  Yes
- -

References