CVE-2023-23549: DoS via long hostnames
Published Nov 15, 2023
·Updated
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 Software
118 affected components
CheckMK Checkmk=2.0.0
CheckMK Checkmk=2.0.0-b1
CheckMK Checkmk=2.0.0-b2
CheckMK Checkmk=2.0.0-b3
CheckMK Checkmk=2.0.0-b4
CheckMK Checkmk=2.0.0-b5
CheckMK Checkmk=2.0.0-b6
CheckMK Checkmk=2.0.0-b7
CheckMK Checkmk=2.0.0-b8
CheckMK Checkmk=2.0.0-i1
CheckMK Checkmk=2.0.0-p1
CheckMK Checkmk=2.0.0-p10
CheckMK Checkmk=2.0.0-p11
CheckMK Checkmk=2.0.0-p12
CheckMK Checkmk=2.0.0-p13
CheckMK Checkmk=2.0.0-p14
CheckMK Checkmk=2.0.0-p15
CheckMK Checkmk=2.0.0-p16
CheckMK Checkmk=2.0.0-p17
CheckMK Checkmk=2.0.0-p18
CheckMK Checkmk=2.0.0-p19
CheckMK Checkmk=2.0.0-p2
CheckMK Checkmk=2.0.0-p20
CheckMK Checkmk=2.0.0-p21
CheckMK Checkmk=2.0.0-p22
CheckMK Checkmk=2.0.0-p23
CheckMK Checkmk=2.0.0-p24
CheckMK Checkmk=2.0.0-p25
CheckMK Checkmk=2.0.0-p26
CheckMK Checkmk=2.0.0-p27
CheckMK Checkmk=2.0.0-p28
CheckMK Checkmk=2.0.0-p29
CheckMK Checkmk=2.0.0-p3
CheckMK Checkmk=2.0.0-p30
CheckMK Checkmk=2.0.0-p31
CheckMK Checkmk=2.0.0-p32
CheckMK Checkmk=2.0.0-p33
CheckMK Checkmk=2.0.0-p34
CheckMK Checkmk=2.0.0-p35
CheckMK Checkmk=2.0.0-p36
CheckMK Checkmk=2.0.0-p37
CheckMK Checkmk=2.0.0-p38
CheckMK Checkmk=2.0.0-p39
CheckMK Checkmk=2.0.0-p4
CheckMK Checkmk=2.0.0-p5
CheckMK Checkmk=2.0.0-p6
CheckMK Checkmk=2.0.0-p7
CheckMK Checkmk=2.0.0-p8
CheckMK Checkmk=2.0.0-p9
CheckMK Checkmk=2.1.0
CheckMK Checkmk=2.1.0-b1
CheckMK Checkmk=2.1.0-b2
CheckMK Checkmk=2.1.0-b3
CheckMK Checkmk=2.1.0-b4
CheckMK Checkmk=2.1.0-b5
CheckMK Checkmk=2.1.0-b6
CheckMK Checkmk=2.1.0-b7
CheckMK Checkmk=2.1.0-b8
CheckMK Checkmk=2.1.0-b9
CheckMK Checkmk=2.1.0-p1
CheckMK Checkmk=2.1.0-p10
CheckMK Checkmk=2.1.0-p11
CheckMK Checkmk=2.1.0-p12
CheckMK Checkmk=2.1.0-p13
CheckMK Checkmk=2.1.0-p14
CheckMK Checkmk=2.1.0-p15
CheckMK Checkmk=2.1.0-p16
CheckMK Checkmk=2.1.0-p17
CheckMK Checkmk=2.1.0-p18
CheckMK Checkmk=2.1.0-p19
CheckMK Checkmk=2.1.0-p2
CheckMK Checkmk=2.1.0-p20
CheckMK Checkmk=2.1.0-p21
CheckMK Checkmk=2.1.0-p22
CheckMK Checkmk=2.1.0-p23
CheckMK Checkmk=2.1.0-p24
CheckMK Checkmk=2.1.0-p25
CheckMK Checkmk=2.1.0-p26
CheckMK Checkmk=2.1.0-p27
CheckMK Checkmk=2.1.0-p28
CheckMK Checkmk=2.1.0-p29
CheckMK Checkmk=2.1.0-p3
CheckMK Checkmk=2.1.0-p30
CheckMK Checkmk=2.1.0-p31
CheckMK Checkmk=2.1.0-p32
CheckMK Checkmk=2.1.0-p33
CheckMK Checkmk=2.1.0-p34
CheckMK Checkmk=2.1.0-p35
CheckMK Checkmk=2.1.0-p36
CheckMK Checkmk=2.1.0-p4
CheckMK Checkmk=2.1.0-p5
CheckMK Checkmk=2.1.0-p6
CheckMK Checkmk=2.1.0-p7
CheckMK Checkmk=2.1.0-p8
CheckMK Checkmk=2.1.0-p9
CheckMK Checkmk=2.2.0
CheckMK Checkmk=2.2.0-b1
CheckMK Checkmk=2.2.0-b2
CheckMK Checkmk=2.2.0-b3
CheckMK Checkmk=2.2.0-b4
CheckMK Checkmk=2.2.0-b5
CheckMK Checkmk=2.2.0-b6
CheckMK Checkmk=2.2.0-b7
CheckMK Checkmk=2.2.0-b8
CheckMK Checkmk=2.2.0-i1
CheckMK Checkmk=2.2.0-p1
CheckMK Checkmk=2.2.0-p10
CheckMK Checkmk=2.2.0-p11
CheckMK Checkmk=2.2.0-p12
CheckMK Checkmk=2.2.0-p13
CheckMK Checkmk=2.2.0-p2
CheckMK Checkmk=2.2.0-p3
CheckMK Checkmk=2.2.0-p4
CheckMK Checkmk=2.2.0-p5
CheckMK Checkmk=2.2.0-p6
CheckMK Checkmk=2.2.0-p7
CheckMK Checkmk=2.2.0-p8
CheckMK Checkmk=2.2.0-p9
Event History
Nov 15, 2023
CVE Published
11:07 AM
Data Sourced
11:07 AM
DescriptionSeverityWeakness
Frequently Asked Questions
1
What is the severity of CVE-2023-23549?
CVE-2023-23549 has been classified as a moderate severity vulnerability due to its potential to cause partial denial of service.
2
How do I fix CVE-2023-23549?
To fix CVE-2023-23549, upgrade your Checkmk installation to version 2.2.0p15 or later, or 2.1.0p37 or later.
3
What causes CVE-2023-23549?
CVE-2023-23549 is caused by improper input validation that allows attackers to submit excessively long hostnames.
4
Which versions of Checkmk are affected by CVE-2023-23549?
CVE-2023-23549 affects Checkmk versions below 2.2.0p15, below 2.1.0p37, and all versions of 2.0.0 up to 2.0.0p39.
5
What are the potential impacts of CVE-2023-23549?
The potential impacts of CVE-2023-23549 include notable disruption of the user interface, leading to a partial denial of service.