Home/CVE/cloud-init through 19.4 relies on Mersenne Twister for a random password, which makes it easier for attackers to predict
CVE

CVE-2020-8631

cloud-init through 19.4 relies on Mersenne Twister for a random password, which makes it easier for attackers to predict

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.

MEDIUM · CVSS 5.5 EPSS 0.00113
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-330Use of Insufficiently Random Values
▤

Affected Products & Versions

3
canonical cloud-init<= 19.4
opensuse leapall versions
debian linuxall versions
▣

Scoring & Timeline

5.5
MEDIUM · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD05 Feb 2020 · 02:15 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
⚑

Vendor Advisories

8
suse-csafopenSUSE-SU-2024:10688-1
msrcCVE-2020-8631
suse-csafSUSE-SU-2020:0818-1
suse-csafopenSUSE-SU-2020:0400-1
suse-csafSUSE-SU-2020:0751-1
🔗

References & Sources

4
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00042.htmlMailing ListThird Party Advisory
https://bugs.launchpad.net/ubuntu/+source/cloud-init/+bug/1860795Issue TrackingPatchThird Party Advisory
https://github.com/canonical/cloud-init/pull/204PatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/02/msg00021.htmlMailing ListThird Party Advisory
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