CVE-2023-23549
DoS via long hostnames
LOW
2.7
CVSS Score
Published: November 15, 2023 at 11:07 AM UTC
Updated: June 17, 2026 at 05:37 AM UTC
1 product affected across 1 vendorCheckmk
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Severity
LOW2.7
Exploit prediction
EPSS 0.6%
SSVC
No known exploit
Description
Improper Input Validation in Checkmk <2.2.0p15, <2.1.0p37, <=2.0.0p39 allows priviledged attackers to cause partial denial of service of the UI via too long hostnames.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
2.0.0 ≤ v ≤ 2.0.0p392.1.0 ≤ v < 2.1.0p372.2.0 ≤ v < 2.2.0p152.0.02.0.0 b12.0.0 b22.0.0 b32.0.0 b42.0.0 b52.0.0 b62.0.0 b72.0.0 b82.0.0 i12.0.0 p12.0.0 p102.0.0 p112.0.0 p122.0.0 p132.0.0 p142.0.0 p152.0.0 p162.0.0 p172.0.0 p182.0.0 p192.0.0 p22.0.0 p202.0.0 p212.0.0 p222.0.0 p232.0.0 p242.0.0 p252.0.0 p262.0.0 p272.0.0 p282.0.0 p292.0.0 p32.0.0 p302.0.0 p312.0.0 p322.0.0 p332.0.0 p342.0.0 p352.0.0 p362.0.0 p372.0.0 p382.0.0 p392.0.0 p42.0.0 p52.0.0 p62.0.0 p72.0.0 p82.0.0 p92.1.02.1.0 b12.1.0 b22.1.0 b32.1.0 b42.1.0 b52.1.0 b62.1.0 b72.1.0 b82.1.0 b92.1.0 p12.1.0 p102.1.0 p112.1.0 p122.1.0 p132.1.0 p142.1.0 p152.1.0 p162.1.0 p172.1.0 p182.1.0 p192.1.0 p22.1.0 p202.1.0 p212.1.0 p222.1.0 p232.1.0 p242.1.0 p252.1.0 p262.1.0 p272.1.0 p282.1.0 p292.1.0 p32.1.0 p302.1.0 p312.1.0 p322.1.0 p332.1.0 p342.1.0 p352.1.0 p362.1.0 p42.1.0 p52.1.0 p62.1.0 p72.1.0 p82.1.0 p92.2.02.2.0 b12.2.0 b22.2.0 b32.2.0 b42.2.0 b52.2.0 b62.2.0 b72.2.0 b82.2.0 i12.2.0 p12.2.0 p102.2.0 p112.2.0 p122.2.0 p132.2.0 p22.2.0 p32.2.0 p42.2.0 p52.2.0 p62.2.0 p72.2.0 p82.2.0 p9
Affected range stops below 2.1.0p37, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.2.0p15, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (1)
SSVC — Action Prioritization
SSVCNo known exploitNot automatablePartial impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
2.7LOWCheckmk
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-1284NVD-CWE-noinfo
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