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CVE-2021-45083: An issue was discovered in Cobbler before 3.3.1

31
Routine
HIGH 7.1UPGRADEMITIGATE

CVE-2021-45083 is a high-severity flaw (CVSS 7.1) affecting cobbler, fedora. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in Cobbler before 3.3.1. Files in /etc/cobbler are world readable. Two of those files contain some sensitive information that can be exposed to a local user who has non-privileged access to the server. The users.digest file contains the sha2-512 digest of users in a Cobbler local installation. In the case of an easy-to-guess password, it's trivial to obtain the plaintext string. The settings.yaml file contains secrets such

Why this priority

  • High severity

A fixed release or distro patch exists.

Risk facts

CVSS score7.1 (High)
Attack vectorLocal
Attack complexityLow
Privileges neededLow
User interactionNone
EPSS exploit chance0.3% (top 76%)
CISA exploited listNo
WeaknessCWE-276
Published2022-02-20
Last modified2026-06-17
Publisher (CNA): MITRE · Vendor: cobbler project · fedoraproject

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Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

cobbler project cobbler UPGRADE
Affected: < 3.3.1
Fixed in: 3.3.1
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy cobbler || rpm -q cobbler || cobbler --version
2. UPGRADE to 3.3.1 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade cobbler
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade cobbler
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
fedoraproject fedora MITIGATE
Affected: 34 · 35 · 36
Fixed in: no fixed release known
Safe to downgrade to: a release before 34
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2021-45083?

cobbler: upgrade to 3.3.1; fedora: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2021-45083 being exploited?

CVE-2021-45083 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2021-45083 affect?

CVE-2021-45083 affects cobbler, fedora. Severity is high (CVSS 7.1). An issue was discovered in Cobbler before 3.3.1. Files in /etc/cobbler are world readable. Two of those files contain some sensitive information that can be exposed to a local user who has non-privileged access to the server. The users.dige

How urgent is CVE-2021-45083?

Priority 31/100. High severity

Related CVEs

References

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