Authenticated arbitrary file write via upload traversal
Published Dec 12, 2023 · Updated Aug 28, 2024
Path traversal in GL.iNet GL-AR300M firmware 4.3.7 allows remote authenticated users to write arbitrary files through OpenVPN uploads. The /upload handler accepts a multipart path such as /tmp/ovpn_upload/../../etc/shadow and writes the supplied file outside the upload directory without restricting traversal segments. A valid administrative session token is required; the published exploit replaces /etc/shadow, permitting control of the router root account.
Summary
What happened
Path traversal in GL.iNet GL-AR300M firmware 4.3.7 allows remote authenticated users to write arbitrary files through OpenVPN uploads. The /upload handler accepts a multipart path such as /tmp/ovpn_upload/../../etc/shadow and writes the supplied file outside the upload directory without restricting traversal segments. A valid administrative session token is required; the published exploit replaces /etc/shadow, permitting control of the router root account.
The record
- CVE
- CVE-2023-46455
- Published
- Dec 12, 2023
- Updated
- Aug 28, 2024
- Vendor
- GL.iNet
- Product
- GL-AR300M
- Classifications
- CWE-22, T1068
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Dec 12, 2023CVE publishedPublication date reported by the CVE source.
- Aug 28, 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=4.3.7
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
- CVE-2023-46455.py arbitrary file-write exploitfunctional · demonstrated
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Technologies
Your stack
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Your stack
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