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amazonAmazonALAS-2021-1523
HistoryJul 19, 2021 - 5:29 p.m.

Medium: containerd

2021-07-1917:29:00
alas.aws.amazon.com
18

6.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

6.8 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:P/I:P/A:P

0.001 Low

EPSS

Percentile

50.2%

Issue Overview:

A bug was discovered in containerd where pulling and extracting a specially-crafted container image can result in Unix file permission changes for existing files in the hostโ€™s filesystem. Changes to file permissions can deny access to the expected owner of the file or widen access to others. (CVE-2021-32760)

A flaw was found in containerd CRI plugin. Containers launched through containerdโ€™s CRI implementation that share the same image may receive incorrect environment variables, including values that are defined for other containers. The highest threat from this vulnerability is to data confidentiality. (CVE-2021-21334)

Affected Packages:

containerd

Issue Correction:
Run yum update containerd to update your system.

New Packages:

src:  
ย ย ย  containerd-1.4.6-2.7.amzn1.src  
  
x86_64:  
ย ย ย  containerd-stress-1.4.6-2.7.amzn1.x86_64  
ย ย ย  containerd-debuginfo-1.4.6-2.7.amzn1.x86_64  
ย ย ย  containerd-1.4.6-2.7.amzn1.x86_64  

Additional References

Red Hat: CVE-2021-21334, CVE-2021-32760

Mitre: CVE-2021-21334, CVE-2021-32760

6.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

6.8 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:P/I:P/A:P

0.001 Low

EPSS

Percentile

50.2%