Route disclosure via placeholder expansion in error view
Published Jun 24, 2021 · Updated Sep 16, 2024
Route disclosure in Vaadin 10.0.0 through 10.0.18, 11 through 14.6.1, and 15 through 19.0.8 allows remote attackers to enumerate routes. RouteNotFoundError substitutes an attacker-controlled path into its HTML template before replacing the {{routes}} token, causing that token in the path to expand to every registered route. The disclosure requires production mode and the default NotFoundException handler and reveals route names that support targeted scanning, without directly granting access to the routes.
Summary
What happened
Route disclosure in Vaadin 10.0.0 through 10.0.18, 11 through 14.6.1, and 15 through 19.0.8 allows remote attackers to enumerate routes. RouteNotFoundError substitutes an attacker-controlled path into its HTML template before replacing the {{routes}} token, causing that token in the path to expand to every registered route. The disclosure requires production mode and the default NotFoundException handler and reveals route names that support targeted scanning, without directly granting access to the routes.
The record
- CVE
- CVE-2021-31412
- Published
- Jun 24, 2021
- Updated
- Sep 16, 2024
- Vendor
- Vaadin
- Product
- Flow Server
- Classifications
- CWE-668, CWE-1295, CWE-20, T1595.002
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 24, 2021CVE publishedPublication date reported by the CVE source.
- Sep 16, 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=1.0.0 <unspecified
- Affected versionversion=1.1.0 <unspecified
- Affected versionversion=2.0.0 <unspecified
- Affected versionversion=3.0.0 <unspecified
- Affected versionversion=unspecified <=1.0.14
- Affected versionversion=unspecified <2.0.0
- Affected versionversion=unspecified <=2.6.1
- Affected versionversion=unspecified <=6.0.9
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
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
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Technologies
Your stack
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Your stack
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