Authorization bypass via newline-sensitive regex matching
Published Jun 28, 2022 · Updated Aug 3, 2024
Incorrect authorization in Apache Shiro before 1.9.1 allows remote attackers to bypass access controls through crafted request paths. RegExPatternMatcher compiles dot-containing patterns without Pattern.DOTALL, so carriage returns or line feeds in a path prevent the protected rule from matching. Exposure requires an application to use RegExPatternMatcher with a dot wildcard on a servlet container that accepts the crafted path; successful requests reach protected resources without authorization.
Summary
What happened
Incorrect authorization in Apache Shiro before 1.9.1 allows remote attackers to bypass access controls through crafted request paths. RegExPatternMatcher compiles dot-containing patterns without Pattern.DOTALL, so carriage returns or line feeds in a path prevent the protected rule from matching. Exposure requires an application to use RegExPatternMatcher with a dot wildcard on a servlet container that accepts the crafted path; successful requests reach protected resources without authorization.
The record
- CVE
- CVE-2022-32532
- Published
- Jun 28, 2022
- Updated
- Aug 3, 2024
- Vendor
- The Apache Software Foundation
- Product
- Apache Shiro
- Classifications
- CWE-863, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 28, 2022CVE publishedPublication date reported by the CVE source.
- Aug 3, 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=Before 1.9.1
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.
Public exploit references
- Apache Shiro CVE-2022-32532 reproduction environmentproof of concept · unverified
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Technologies
Your stack
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Your stack
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