Vulnerability in Canonical Cloud-Init
CVE-2020-8631
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.004 (35.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 35th percentile — 35.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Canonical Cloud-Init
- Debian Linux — versions 8.0
- openSUSE Leap — versions 15.1
Weakness classification (CWE)
References
- github.com/canonical/cloud-init/pull/204 (Patch, Third Party Advisory)
- bugs.launchpad.net/ubuntu/+source/cloud-init/+bug/1860795 (Patch, Third Party Advisory, Issue Tracking)
- lists.debian.org/debian-lts-announce/2020/02/msg00021.html (mailing-list, Mailing List, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2020-03/msg00042.html (vendor-advisory, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-8631?
- CVE-2020-8631 is a medium-severity vulnerability in Canonical Cloud-Init, classified under Use of Insufficiently Random Values. CVSS score: 5.5/10. Published 2020-02-05.
- How severe is CVE-2020-8631?
- Medium severity. CVSS v3 base score is 5.5 out of 10.