CVE-2020-8809 Supply chain in n/a
Man-in-the-middle attackers can modify unencrypted update downloads, leading to arbitrary code execution in GXDLMS Director.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-8809?
CVE-2020-8809 is a high-severity vulnerability in n/a, published on 25 Feb 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-494
Which versions are affected by CVE-2020-8809?
It affects 1 product.
Products include Gurux Device Language Message Specification Director.
How do I fix CVE-2020-8809?
No fix has been published for CVE-2020-8809 yet. Limit exposure of the affected software until one is available.
Is CVE-2020-8809 being exploited?
There is no known exploitation of CVE-2020-8809 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Other vulnerabilities in n/a
Sources
Also known as GHSA-r58g-p5fc-5h6w.