Root code execution via traversal-based file overwrite
Published Dec 22, 2021 · Updated Aug 3, 2024
Path traversal in Garrett Metal Detectors iC Module CMA 5.0 allows remote authenticated users to overwrite arbitrary files. The setEnv handler appends an unvalidated, user-supplied key to /ltrx_user/env/ and opens the resulting path for writing. Access to the authenticated TCP CLI on port 6877 is required; crafted traversal sequences can place limited attacker-controlled content outside that directory and execute code as root.
Summary
What happened
Path traversal in Garrett Metal Detectors iC Module CMA 5.0 allows remote authenticated users to overwrite arbitrary files. The setEnv handler appends an unvalidated, user-supplied key to /ltrx_user/env/ and opens the resulting path for writing. Access to the authenticated TCP CLI on port 6877 is required; crafted traversal sequences can place limited attacker-controlled content outside that directory and execute code as root.
The record
- CVE
- CVE-2021-21904
- Published
- Dec 22, 2021
- Updated
- Aug 3, 2024
- Vendor
- Garrett Metal Detectors
- Product
- iC Module CMA
- Classifications
- CWE-22, T1210
- Attack vector
- network
- Privileges
- admin
Timeline
How it unfolded
- Dec 22, 2021CVE 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?
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- Affected versionversion=Garrett Metal Detectors iC Module CMA Version 5.0
What conditions does exploitation require?
What is affected?
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
- Talos setenv directory-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
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Your stack
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