Arbitrary file read via database DSN injection
Published Feb 1, 2022 · Updated May 5, 2025
Improper input validation in GitHub gh-ost before 1.1.3 allows attackers to read local files via a crafted database argument. The main function passes the -database value into a MySQL DSN without escaping delimiters, allowing injected DSN options to expose files to an attacker-controlled server. Exploitation requires host access or an administrator who runs the crafted command, plus connectivity from gh-ost to the malicious MySQL server.
Summary
What happened
Improper input validation in GitHub gh-ost before 1.1.3 allows attackers to read local files via a crafted database argument. The main function passes the -database value into a MySQL DSN without escaping delimiters, allowing injected DSN options to expose files to an attacker-controlled server. Exploitation requires host access or an administrator who runs the crafted command, plus connectivity from gh-ost to the malicious MySQL server.
The record
- CVE
- CVE-2022-21687
- Published
- Feb 1, 2022
- Updated
- May 5, 2025
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-141, CWE-20, CWE-99, T1005
- Attack vector
- network
- Privileges
- admin
Timeline
How it unfolded
- Feb 1, 2022CVE publishedPublication date reported by the CVE source.
- May 5, 2025Record updatedLatest update available in the CVE record.
Exploitability
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Attacks
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