CVE-2020-8809
Last modified
CVE-2020-8809 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. 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. EPSS estimates a 1.03% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Gurux | Device Language Message Specification Director | < 8.5.1905.1301 |
References
- https://github.com/seqred-s-a/gxdlmsdirector-cveExploit, Third Party Advisory
- https://seqred.pl/en/cve-gurux-gxdlms-director/Exploit, Third Party Advisory
- https://github.com/seqred-s-a/gxdlmsdirector-cveExploit, Third Party Advisory
- https://seqred.pl/en/cve-gurux-gxdlms-director/Exploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
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