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CVE-2020-8631

Date: February 5, 2020

cloud-init through 19.4 relies on Mersenne Twister for a random password, which makes it easier for attackers to predict passwords, because rand_str in cloudinit/util.py calls the random.choice function.

Language: Python

Severity Score

Related Resources (9)

https://people.canonical.com/~ubuntu-security/cve/CVE-2020-8631
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00042.html
https://github.com/canonical/cloud-init/pull/204
https://lists.debian.org/debian-lts-announce/2020/02/msg00021.html
https://access.redhat.com/security/cve/CVE-2020-8631
https://security-tracker.debian.org/tracker/CVE-2020-8631
https://bugs.launchpad.net/ubuntu/+source/cloud-init/+bug/1860795
https://nvd.nist.gov/vuln/detail/CVE-2020-8631
https://www.mend.io/vulnerability-database/CVE-2020-8631

Severity Score

Weakness Type (CWE)

Use of Insufficiently Random Values

CWE-330

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): NONE
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): NONE
Availability (A): NONE
Additional information:

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