PatchTheCVECVE-2023-22348: Improper Authorization in RestAPI in Checkmk GmbH's Checkmk versions <2.1.0p28 and <2.2.0b8 allows remote auth
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Routine
MEDIUM 4.3DOWNGRADEUPGRADE
CVE-2023-22348 is a medium-severity flaw (CVSS 4.3) affecting checkmk, checkmk. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Improper Authorization in RestAPI in Checkmk GmbH's Checkmk versions <2.1.0p28 and <2.2.0b8 allows remote authenticated users to read arbitrary host_configs.
Why this priority
- No elevated risk signals yet
A fixed release or distro patch exists.
Risk facts
| CVSS score | 4.3 (Medium) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | Low |
| User interaction | None |
| EPSS exploit chance | 0.6% (top 52%) |
| CISA exploited list | No |
| Weakness | CWE-285 |
| Published | 2023-05-17 |
| Last modified | 2026-10-23 |
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
checkmk checkmk DOWNGRADE
Affected: 2.1.0 · 2.1.0 b1 · 2.1.0 b2 · 2.1.0 b3 · 2.1.0 b4 · 2.1.0 b5 · 2.1.0 b6 · 2.1.0 b7
Fixed in: no fixed release known
Safe to downgrade to: a release before 2.1.0
1. Check installed version
apt-cache policy checkmk || rpm -q checkmk || checkmk --version
2. No fixed release: DOWNGRADE to a release before 2.1.0 (Debian / Ubuntu)
apt-cache madison checkmk
sudo apt install checkmk=<VERSION_BEFORE_2.1.0>
sudo apt-mark hold checkmk
2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list checkmk
sudo dnf downgrade checkmk-<VERSION_BEFORE_2.1.0>
sudo dnf versionlock add checkmk
Downgrade risk
Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.
After downgrade
Restart the service, and keep the package held until a fixed release ships.
tribe29 checkmk UPGRADE
Affected: < 2.1.0
Fixed in: 2.1.0
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy checkmk || rpm -q checkmk || checkmk --version
2. UPGRADE to 2.1.0 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade checkmk
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade checkmk
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
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.
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
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