Stored XSS via notebook MIME sniffing
Published Aug 17, 2021 · Updated Sep 17, 2024
Stored XSS in Rapid7 Velociraptor 0.5.9 and earlier allows remote authenticated users to run script through a malicious notebook upload. Notebook and download handlers use Go's http.FileServer, which sniffs an uploaded file's MIME type and serves executable content instead of forcing a download. An authenticated Velociraptor account and later viewing of the uploaded notebook content are required, bounding the impact to browser-context data access and actions.
Summary
What happened
Stored XSS in Rapid7 Velociraptor 0.5.9 and earlier allows remote authenticated users to run script through a malicious notebook upload. Notebook and download handlers use Go's http.FileServer, which sniffs an uploaded file's MIME type and serves executable content instead of forcing a download. An authenticated Velociraptor account and later viewing of the uploaded notebook content are required, bounding the impact to browser-context data access and actions.
The record
- CVE
- CVE-2021-3619
- Published
- Aug 17, 2021
- Updated
- Sep 17, 2024
- Vendor
- Rapid7
- Product
- Velociraptor
- Classifications
- CWE-79, T1059.007
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Aug 17, 2021CVE publishedPublication date reported by the CVE source.
- Sep 17, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0.5.9 <=0.5.9
What conditions does exploitation require?
What is affected?
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
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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