Gurux GXDLMS Director prior 8.5.1905.1301 Update gurux.fi/obis/files.xml code download
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
7.5 | $0-$5k | 0.00 |
A vulnerability classified as critical was found in Gurux GXDLMS Director. Affected by this vulnerability is an unknown part of the file gurux.fi/obis/files.xml of the component Update Handler. The manipulation with an unknown input leads to a code download vulnerability. The CWE definition for the vulnerability is CWE-494. The product downloads source code or an executable from a remote location and executes the code without sufficiently verifying the origin and integrity of the code. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:
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.
The weakness was disclosed 02/25/2020. This vulnerability is known as CVE-2020-8809 since 02/07/2020. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1495 for this issue.
By approaching the search of inurl:gurux.fi/obis/files.xml it is possible to find vulnerable targets with Google Hacking.
Upgrading to version 8.5.1905.1301 eliminates this vulnerability.
The entry 150518 is pretty similar.
Product
Vendor
Name
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 7.7VulDB Meta Temp Score: 7.5
VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 8.1
NVD Vector: 🔍
CVSSv2
AV | AC | Au | C | I | A |
---|---|---|---|---|---|
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
---|---|---|---|---|---|
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
Exploiting
Class: Code downloadCWE: CWE-494
ATT&CK: T1495
Local: No
Remote: Yes
Availability: 🔍
Status: Not defined
Google Hack: 🔍
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
---|---|---|---|---|
Today | unlock | unlock | unlock | unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔍
Upgrade: GXDLMS Director 8.5.1905.1301
Timeline
02/07/2020 🔍02/25/2020 🔍
02/26/2020 🔍
04/06/2024 🔍
Sources
Advisory: github.comStatus: Not defined
CVE: CVE-2020-8809 (🔍)
See also: 🔍
Entry
Created: 02/26/2020 15:20Updated: 04/06/2024 07:23
Changes: 02/26/2020 15:20 (38), 02/26/2020 15:25 (17), 04/06/2024 07:23 (18)
Complete: 🔍
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