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CVE-2021-25975
Date: November 10, 2021
Overview
In publify, versions v8.0 to v9.2.4 are vulnerable to stored XSS as a result of an unrestricted file upload. This issue allows a user with “publisher” role to inject malicious JavaScript via the uploaded html file.Details
Publify is vulnerable to stored XSS as a result of an unrestricted file upload. This issue allows a user with “publisher” role to inject malicious JavaScript via the uploaded html file.PoC Details
In incognito mode, sign in with Alice, a “publisher” role user. Browse to the “admin/resources” endpoint and upload a malicious file (we’ll call it “hello.html”), with malicious content..On another window, login as an admin and access the “files/resource/__/hello.html” endpoint. The payload gets triggered.
Affected Environments
Publify versions 8.0 to 9.2.4Prevention
Update to Publify version v9.2.5Language: Ruby
Good to know:
| Base Score: |
|
|---|---|
| Attack Vector (AV): | Network |
| Attack Complexity (AC): | Low |
| Privileges Required (PR): | Low |
| User Interaction (UI): | Required |
| Scope (S): | Changed |
| Confidentiality (C): | Low |
| Integrity (I): | Low |
| Availability (A): | None |
| Base Score: |
|
|---|---|
| Access Vector (AV): | Network |
| Access Complexity (AC): | Medium |
| Authentication (AU): | Single |
| Confidentiality (C): | None |
| Integrity (I): | Partial |
| Availability (A): | None |
| Additional information: |