Cross-site scripting via partial Content-Type matching
Published Nov 29, 2023 · Updated Oct 11, 2024
Cross-site scripting in CarrierWave 2.2.0 through 2.2.4 and 3.0.0 through 3.0.4 allows remote authenticated users to run script via uploads. The allowlisted_content_type? check uses an unanchored regular expression, so a value such as text/plain; image/png matches an image/png allowlist entry. An application must use content_type_allowlist, accept an attacker-controlled upload, preserve the attacker-set Content-Type on delivery, and induce a user to open the file; the script then runs in that user's browser.
Summary
What happened
Cross-site scripting in CarrierWave 2.2.0 through 2.2.4 and 3.0.0 through 3.0.4 allows remote authenticated users to run script via uploads. The allowlisted_content_type? check uses an unanchored regular expression, so a value such as text/plain; image/png matches an image/png allowlist entry. An application must use content_type_allowlist, accept an attacker-controlled upload, preserve the attacker-set Content-Type on delivery, and induce a user to open the file; the script then runs in that user's browser.
The record
- CVE
- CVE-2023-49090
- Published
- Nov 29, 2023
- Updated
- Oct 11, 2024
- Vendor
- CarrierWave
- Product
- CarrierWave
- Classifications
- CWE-79, T1203
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Nov 29, 2023CVE publishedPublication date reported by the CVE source.
- Oct 11, 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=>= 2.2.0, < 2.2.5
- Affected versionversion=>= 3.0.0, < 3.0.5
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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