Internal file read and write via path traversal
Published Feb 13, 2023 · Updated Mar 10, 2025
Path traversal in ownCloud Android App before 3.0 allows local attackers to read or write internal app files via crafted share intents. ReceiveExternalFilesActivity accepts attacker-controlled stream URIs and filenames; cache-directory traversal or its file provider bypasses path checks, while savePlainTextToFile joins an unchecked name to the cache path. A victim must process the shared content; writes are limited to .txt files, while reads can expose preferences or logs.
Summary
What happened
Path traversal in ownCloud Android App before 3.0 allows local attackers to read or write internal app files via crafted share intents. ReceiveExternalFilesActivity accepts attacker-controlled stream URIs and filenames; cache-directory traversal or its file provider bypasses path checks, while savePlainTextToFile joins an unchecked name to the cache path. A victim must process the shared content; writes are limited to .txt files, while reads can expose preferences or logs.
The record
- CVE
- CVE-2023-24804
- Published
- Feb 13, 2023
- Updated
- Mar 10, 2025
- Vendor
- ownCloud
- Product
- ownCloud Android App
- Classifications
- CWE-35, T1533, T1641
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Feb 13, 2023CVE publishedPublication date reported by the CVE source.
- Mar 10, 2025Record 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=< 3.0
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
- GitHub Security Lab path-traversal proof of conceptproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
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