National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2020-8809 Detail

Current Description

Gurux GXDLMS Director prior to 8.5.1905.1301 downloads updates to add-ins and OBIS code over an unencrypted HTTP connection. A man-in-the-middle attacker can prompt the user to download updates by modifying the contents of gurux.fi/obis/files.xml and gurux.fi/updates/updates.xml. Then, the attacker can modify the contents of downloaded files. In the case of add-ins (if the user is using those), this will lead to code execution. In case of OBIS codes (which the user is always using as they are needed to communicate with the energy meters), this can lead to code execution when combined with CVE-2020-8810.

Source:  MITRE
View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score: 8.1 HIGH
Vector:  CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://github.com/seqred-s-a/gxdlmsdirector-cve Exploit Third Party Advisory
https://seqred.pl/en/cve-gurux-gxdlms-director/ Exploit Third Party Advisory

Weakness Enumeration

CWE-ID CWE Name Source
CWE-494 Download of Code Without Integrity Check NIST  

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:gurux:device_language_message_specification_director:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (excluding)
8.5.1905.1301


Change History

1 change record found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2020-8809
NVD Published Date:
02/25/2020
NVD Last Modified:
02/27/2020