CVE-2019-19922
CVSS V2 Low 2.1
CVSS V3 Medium 5.5
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.)
Overview
- CVE ID
- CVE-2019-19922
- Assigner
- cve@mitre.org
- Vulnerability Status
- Analyzed
- Published Version
- 2019-12-22T20:15:10
- Last Modified Date
- 2022-12-14T19:15:13
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 1 | OR | 5.3.9 |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:L/AC:L/Au:N/C:N/I:N/A:P
- Access Vector
- LOCAL
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- NONE
- Integrity Impact
- NONE
- Availability Impact
- PARTIAL
- Base Score
- 2.1
- Severity
- LOW
- Exploitability Score
- 3.9
- Impact Score
- 2.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Attack Vector
- LOCAL
- Attack Compatibility
- LOW
- Privileges Required
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- NONE
- Availability Impact
- HIGH
- Base Score
- 5.5
- Base Severity
- MEDIUM
- Exploitability Score
- 1.8
- Impact Score
- 3.6
References
| Reference URL | Reference Tags |
|---|---|
| https://relistan.com/the-kernel-may-be-slowing-down-your-app | Exploit Third Party Advisory |
| https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=de53fd7aedb100f03e5d2231cfce0e4993282425 | Mailing List Patch Vendor Advisory |
| https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.9 | Mailing List Patch Vendor Advisory |
| https://github.com/torvalds/linux/commit/de53fd7aedb100f03e5d2231cfce0e4993282425 | Patch Third Party Advisory |
| https://github.com/kubernetes/kubernetes/issues/67577 | Issue Tracking Patch Third Party Advisory |
| https://usn.ubuntu.com/4226-1/ | Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2020/01/msg00013.html | |
| https://security.netapp.com/advisory/ntap-20200204-0002/ | |
| https://www.oracle.com/security-alerts/cpuApr2021.html |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2019-19922 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-19922 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 07:11:39 | Added to TrackCVE | |||
| 2022-12-04 08:30:25 | 2019-12-22T20:15Z | 2019-12-22T20:15:10 | CVE Published Date | updated |
| 2022-12-04 08:30:25 | 2021-06-14T18:15:18 | CVE Modified Date | updated | |
| 2022-12-04 08:30:25 | Undergoing Analysis | Vulnerability Status | updated | |
| 2022-12-14 20:09:43 | 2022-12-14T19:15:13 | CVE Modified Date | updated | |
| 2022-12-14 20:09:43 | Undergoing Analysis | Analyzed | Vulnerability Status | updated |