Vulnerability Details : CVE-2021-42021
A vulnerability has been identified in Siveillance Video DLNA Server (2019 R1), Siveillance Video DLNA Server (2019 R2), Siveillance Video DLNA Server (2019 R3), Siveillance Video DLNA Server (2020 R1), Siveillance Video DLNA Server (2020 R2), Siveillance Video DLNA Server (2020 R3), Siveillance Video DLNA Server (2021 R1). The affected application contains a path traversal vulnerability that could allow to read arbitrary files on the server that are outside the application’s web document directory. An unauthenticated remote attacker could exploit this issue to access sensitive information for subsequent attacks.
Vulnerability category: Directory traversal
Products affected by CVE-2021-42021
- cpe:2.3:a:siemens:siveillance_video_management_software_2019_r1:*:*:*:*:*:*:*:*
- cpe:2.3:a:siemens:siveillance_video_management_software_2019_r2:*:*:*:*:*:*:*:*
- cpe:2.3:a:siemens:siveillance_video_management_software_2019_r3:*:*:*:*:*:*:*:*
- cpe:2.3:a:siemens:siveillance_video_management_software_2020_r1:-:*:*:*:*:*:*:*
- cpe:2.3:a:siemens:siveillance_video_management_software_2020_r2:-:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-42021
1.00%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 75 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-42021
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:P/I:N/A:N |
10.0
|
2.9
|
NIST | |
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
3.9
|
3.6
|
NIST |
CWE ids for CVE-2021-42021
-
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)
-
The product uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize "/dir/../filename" sequences that can resolve to a location that is outside of that directory.Assigned by: productcert@siemens.com (Secondary)
References for CVE-2021-42021
-
https://cert-portal.siemens.com/productcert/pdf/ssa-755517.pdf
Patch;Third Party Advisory
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