Ubuntu.comUB:CVE-2020-8557CVE-2020-8557
2.1 Low
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:L/AC:L/Au:N/C:N/I:N/A:P
5.5 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
0.0004 Low
EPSS
Percentile
12.6%
The Kubernetes kubelet component in versions 1.1-1.16.12, 1.17.0-1.17.8 and
1.18.0-1.18.5 do not account for disk usage by a pod which writes to its
own /etc/hosts file. The /etc/hosts file mounted in a pod by kubelet is not
included by the kubelet eviction manager when calculating ephemeral storage
usage by a pod. If a pod writes a large amount of data to the /etc/hosts
file, it could fill the storage space of the node and cause the node to
fail.
Notes
| Author | Note |
|---|---|
| leosilva | kubernates is in fact a kubernetes installer that calls snap, not the package it self. |
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| ubuntu | 20.04 | noarch | kubernetes | < any | UNKNOWN |
| ubuntu | 22.04 | noarch | kubernetes | < any | UNKNOWN |
| ubuntu | 23.10 | noarch | kubernetes | < any | UNKNOWN |
| ubuntu | 24.04 | noarch | kubernetes | < any | UNKNOWN |
Related
2.1 Low
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:L/AC:L/Au:N/C:N/I:N/A:P
5.5 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
0.0004 Low
EPSS
Percentile
12.6%