Script execution via unfiltered imported device name
Published Sep 7, 2021 · Updated Aug 4, 2024
Reflected XSS in affected Moxa device firmware allows attackers to execute script in an administrator's browser via a crafted config file. The Config Import handler renders an unfiltered deviceName value from an uploaded configuration file in its response, causing embedded script to execute. User interaction is required because a victim must import the crafted file; the resulting script runs within that victim's browser context.
Summary
What happened
Reflected XSS in affected Moxa device firmware allows attackers to execute script in an administrator's browser via a crafted config file. The Config Import handler renders an unfiltered deviceName value from an uploaded configuration file in its response, causing embedded script to execute. User interaction is required because a victim must import the crafted file; the resulting script runs within that victim's browser context.
The record
- CVE
- CVE-2021-39278
- Published
- Sep 7, 2021
- Updated
- Aug 4, 2024
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-79, T1189
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 7, 2021CVE publishedPublication date reported by the CVE source.
- Aug 4, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
What conditions does exploitation require?
What is affected?
Affected products and versions are unavailable in this record.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- SEC Consult malicious configuration-file proof of conceptproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo