CVEvulnerability
CVE-2020-27386
8.8 HIGH
Official page ↗
- Status
- Modified
- Published
- 2020-11-12
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 8.8 HIGH — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CVSS 2.0 ([email protected])
- 6.5 MEDIUM — AV:N/AC:L/Au:S/C:P/I:P/A:P
- Weaknesses
- CWE-434
Description
An unrestricted file upload issue in FlexDotnetCMS before v1.5.9 allows an authenticated remote attacker to upload and execute arbitrary files by using the FileManager to upload malicious code (e.g., ASP code) in the form of a safe file type (e.g., a TXT file), and then using the FileEditor (in v1.5.8 and prior) or the FileManager's rename function (in v1.5.7 and prior) to rename the file to an executable extension (e.g., ASP), and finally executing the file via an HTTP GET request to /<path_to_file>.
Affected configurations
• flexdotnetcms project flexdotnetcms (< 1.5.9)
Related
Weakness · CWE (1)
- CWE-434 Unrestricted Upload of File with Dangerous Type weakness
References
- http://packetstormsecurity.com/files/160411/FlexDotnetCMS-1.5.8-Arbitrary-ASP-File-Upload.html Third Party Advisory, VDB Entry
- https://blog.vonahi.io/whats-in-a-re-name/ Exploit, Third Party Advisory
- https://github.com/MacdonaldRobinson/FlexDotnetCMS/releases/tag/v1.5.9 Release Notes, Third Party Advisory
- https://github.com/rapid7/metasploit-framework/pull/14339 Exploit, Patch, Third Party Advisory
- http://packetstormsecurity.com/files/160411/FlexDotnetCMS-1.5.8-Arbitrary-ASP-File-Upload.html Third Party Advisory, VDB Entry
- https://blog.vonahi.io/whats-in-a-re-name/ Exploit, Third Party Advisory
- https://github.com/MacdonaldRobinson/FlexDotnetCMS/releases/tag/v1.5.9 Release Notes, Third Party Advisory
- https://github.com/rapid7/metasploit-framework/pull/14339 Exploit, Patch, Third Party Advisory