Medium: cloud-init

Issue Overview:

A flaw was found in cloud-init, where it uses the random.choice function when creating sensitive random strings used for generating a random password in new instances. Depending on the instance configuration, a remote or local attacker may abuse this vulnerability to guess the password of the victim user. (CVE-2020-8631)

A flaw was found in cloud-init, where it uses short passwords when generating a random password in new instances. Depending on the instance configuration, a remote or local attacker may abuse this vulnerability to guess the password of the victim user. (CVE-2020-8632)

A vulnerability was discovered in cloud-init which can improperly disclose randomly generated passwords as part of the chpasswd module. The fix prevents the generated password from being written to a world-readable log file on the local disk. (CVE-2021-3429)

Affected Packages:

cloud-init

Issue Correction:
Run yum update cloud-init to update your system.

New Packages:

noarch:  
    cloud-init-0.7.6-43.23.amzn1.noarch  
  
src:  
    cloud-init-0.7.6-43.23.amzn1.src  

Additional References

Red Hat: CVE-2020-8631, CVE-2020-8632, CVE-2021-3429

Mitre: CVE-2020-8631, CVE-2020-8632, CVE-2021-3429