Authenticated directory listing via incomplete traversal filtering
Published Apr 2, 2021 · Updated Aug 4, 2024
Path traversal in WUZHI CMS 4.1.0 allows remote authenticated users to list files in arbitrary directories via the dir parameter. The template administration constructor removes traversal tokens only once, so overlapping sequences collapse into ../ before listing() passes the path to glob(). An authenticated administrative request is required, and exploitation exposes file and directory names outside the template root without changing them.
Summary
What happened
Path traversal in WUZHI CMS 4.1.0 allows remote authenticated users to list files in arbitrary directories via the dir parameter. The template administration constructor removes traversal tokens only once, so overlapping sequences collapse into ../ before listing() passes the path to glob(). An authenticated administrative request is required, and exploitation exposes file and directory names outside the template root without changing them.
The record
- CVE
- CVE-2020-21590
- Published
- Apr 2, 2021
- Updated
- Aug 4, 2024
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-22, T1083
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Apr 2, 2021CVE 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?
What conditions does exploitation require?
What is affected?
Affected products and versions are unavailable in this record.
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
- WUZHI CMS traversal request proof of conceptproof of concept · unverified
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Technologies
Your stack
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Your stack
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