Vulnerability Details : CVE-2020-27385
Incorrect Access Control in the FileEditor (/Admin/Views/FileEditor/) in FlexDotnetCMS before v1.5.11 allows an authenticated remote attacker to read and write to existing files outside the web root. The files can be accessed via directory traversal, i.e., by entering a .. (dot dot) path such as ..\..\..\..\..\<file> in the input field of the FileEditor. In FlexDotnetCMS before v1.5.8, it is also possible to access files by specifying the full path (e.g., C:\<file>). The files can then be edited via the FileEditor.
Vulnerability category: Directory traversal
Products affected by CVE-2020-27385
- cpe:2.3:a:flexdotnetcms_project:flexdotnetcms:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-27385
0.17%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 54 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-27385
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.5
|
MEDIUM | AV:N/AC:L/Au:S/C:P/I:P/A:N |
8.0
|
4.9
|
NIST | |
|
8.1
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N |
2.8
|
5.2
|
NIST |
CWE ids for CVE-2020-27385
-
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-2020-27385
-
https://github.com/MacdonaldRobinson/FlexDotnetCMS/releases/tag/v1.5.11
Release FlexDotNetCMS v1.5.11 · MacdonaldRobinson/FlexDotnetCMS · GitHubRelease Notes;Third Party Advisory
-
https://blog.vonahi.io/whats-in-a-re-name/
What’s in a name: RCE Hunting in CMSs via Unrestricted File UploadExploit;Third Party Advisory
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