eQ-3 Homematic CCU2/Homematic CCU3 Web Interface exec.cgi HTTP POST Request input validation

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CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.5$0-$5k0.00

A vulnerability was found in eQ-3 Homematic CCU2 and Homematic CCU3 (the affected version unknown). It has been classified as critical. This affects an unknown functionality of the file exec.cgi of the component Web Interface. The manipulation as part of a HTTP POST Request leads to a privilege escalation vulnerability. CWE is classifying the issue as CWE-20. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

eQ-3 Homematic CCU2 2.47.20 and CCU3 3.47.18 with the Script Parser AddOn through 1.8 installed allow Remote Code Execution by unauthenticated attackers with access to the web interface via the exec.cgi script, which executes TCL script content from an HTTP POST request.

The weakness was disclosed 11/14/2019. This vulnerability is uniquely identified as CVE-2019-18937 since 11/13/2019. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 11/15/2019).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The entries 145799 and 145798 are pretty similar.

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VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.5

VulDB Base Score: 7.3
VulDB Temp Score: 7.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

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VulDB Base Score: 🔍
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Exploitinginfoedit

Class: Privilege escalation (CWE-20)
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔍

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Countermeasuresinfoedit

Recommended: no mitigation known
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Timelineinfoedit

11/13/2019 🔍
11/14/2019 +1 days 🔍
11/15/2019 +1 days 🔍
11/15/2019 +0 days 🔍

Sourcesinfoedit

Status: Not defined

CVE: CVE-2019-18937 (🔍)
See also: 🔍

Entryinfoedit

Created: 11/15/2019 11:36 AM
Changes: (17) vulnerability_cwe vulnerability_cvss2_nvd_av vulnerability_cvss2_nvd_ac vulnerability_cvss2_nvd_au vulnerability_cvss2_nvd_ci vulnerability_cvss2_nvd_ii vulnerability_cvss2_nvd_ai vulnerability_cvss3_nvd_av vulnerability_cvss3_nvd_ac vulnerability_cvss3_nvd_pr vulnerability_cvss3_nvd_ui vulnerability_cvss3_nvd_s vulnerability_cvss3_nvd_c vulnerability_cvss3_nvd_i vulnerability_cvss3_nvd_a source_cve_assigned source_cve_nvd_summary
Complete: 🔍

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