CVE-2020-8809

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.

CVSS v3.0 8.1 HIGH
CVSS v2.0 6.8 MEDIUM

8.1^/10

CVSS v3.0 : HIGH

Vector :

Exploitability : 2.2 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

6.8^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:M/Au:N/C:P/I:P/A:P

Exploitability : 8.6 / Impact : 6.4

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	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

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Configurations

Configuration 1 (hide)

cpe:2.3:a:gurux:device_language_message_specification_director:*:*:*:*:*:*:*:*

Information

Published : 2020-02-25 11:15

Updated : 2020-02-27 11:12

NVD link : CVE-2020-8809

Mitre link : CVE-2020-8809

JSON object : View

CWE

CWE-494

Download of Code Without Integrity Check

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Products Affected

gurux

device_language_message_specification_director

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