Unauthenticated file deletion via unchecked traversal paths
Published Feb 1, 2021 · Updated Aug 4, 2024
Path traversal in YCCMS 3.3 allows remote attackers to delete files outside intended directories through crafted requests. The delete, deletesite, and deleteAll functions insufficiently validate request-supplied paths before performing file-deletion operations, allowing traversal sequences to escape the intended directory. No authentication or user interaction is required, and the published impact is limited to unauthorized file changes and deletion rather than file disclosure.
Summary
What happened
Path traversal in YCCMS 3.3 allows remote attackers to delete files outside intended directories through crafted requests. The delete, deletesite, and deleteAll functions insufficiently validate request-supplied paths before performing file-deletion operations, allowing traversal sequences to escape the intended directory. No authentication or user interaction is required, and the published impact is limited to unauthorized file changes and deletion rather than file disclosure.
The record
- CVE
- CVE-2020-20290
- Published
- Feb 1, 2021
- Updated
- Aug 4, 2024
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-22, T1485
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Feb 1, 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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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
- YCCMS directory traversal vulnerability reportproof of concept · unverified
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Technologies
Your stack
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Your stack
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