Vulnerability Details : CVE-2020-8810
An issue was discovered in Gurux GXDLMS Director through 8.5.1905.1301. When downloading OBIS codes, it does not verify that the downloaded files are actual OBIS codes and doesn't check for path traversal. This allows the attacker exploiting CVE-2020-8809 to send executable files and place them in an autorun directory, or to place DLLs inside the existing GXDLMS Director installation (run on next execution of GXDLMS Director). This can be used to achieve code execution even if the user doesn't have any add-ins installed.
Vulnerability category: Directory traversal
Products affected by CVE-2020-8810
- Gurux » Device Language Message Specification DirectorVersions up to, including, (<=) 8.5.1905.1301cpe:2.3:a:gurux:device_language_message_specification_director:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-8810
1.27%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 86 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-8810
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
6.8
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:P/A:P |
8.6
|
6.4
|
NIST | |
8.1
|
HIGH | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
2.2
|
5.9
|
NIST |
CWE ids for CVE-2020-8810
-
The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.Assigned by: nvd@nist.gov (Primary)
References for CVE-2020-8810
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https://seqred.pl/en/cve-gurux-gxdlms-director/
Multiple vulnerabilities in Gurux GXDLMS Director – remote code execution | SEQREDThird Party Advisory
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https://github.com/seqred-s-a/gxdlmsdirector-cve
GitHub - seqred-s-a/gxdlmsdirector-cve: CVE-2020-8809 and CVE-2020-8810Exploit;Third Party Advisory
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