Security bypass via semicolon path truncation
Published Apr 21, 2020 · Updated Aug 4, 2024
Improper input validation in Red Hat Undertow before 2.1.0.Final allows remote authenticated users to bypass URL security via crafted paths. The Servlet container truncates servletPath at a semicolon, causing application mapping to target a different path than the full request. Exploitation requires an application that relies on URL-based security mapping; successful requests can expose or alter resources according to the misrouted endpoint.
Summary
What happened
Improper input validation in Red Hat Undertow before 2.1.0.Final allows remote authenticated users to bypass URL security via crafted paths. The Servlet container truncates servletPath at a semicolon, causing application mapping to target a different path than the full request. Exploitation requires an application that relies on URL-based security mapping; successful requests can expose or alter resources according to the misrouted endpoint.
The record
- CVE
- CVE-2020-1757
- Published
- Apr 21, 2020
- Updated
- Aug 4, 2024
- Vendor
- Red Hat
- Product
- Undertow
- Classifications
- CWE-20, CWE-200, T1190
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Apr 21, 2020CVE 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
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=all undertow-1.x.x and undertow-2.x.x versions prior to undertow-2.1.0.Final
- Affected versionversion=all undertow-2.x.x SP1 versions prior to undertow-2.0.30.SP1
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
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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