Local telemetry disclosure and tampering via fixed paths
Published Feb 16, 2023 · Updated Mar 19, 2025
Improper link resolution in Eternal Terminal 6.2.1 allows local users to read or modify TelemetryService data through a pre-created /tmp directory. TelemetryService accepts an existing /tmp/.sentry-native-etserver directory without validating its ownership or mode, then creates UUID-named run data beneath attacker-controlled storage. Exploitation requires creating the mode-0777 directory before etserver starts and winning the nested-directory race, exposing or corrupting telemetry data without interrupting service.
Summary
What happened
Improper link resolution in Eternal Terminal 6.2.1 allows local users to read or modify TelemetryService data through a pre-created /tmp directory. TelemetryService accepts an existing /tmp/.sentry-native-etserver directory without validating its ownership or mode, then creates UUID-named run data beneath attacker-controlled storage. Exploitation requires creating the mode-0777 directory before etserver starts and winning the nested-directory race, exposing or corrupting telemetry data without interrupting service.
The record
- CVE
- CVE-2023-23558
- Published
- Feb 16, 2023
- Updated
- Mar 19, 2025
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-59
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Feb 16, 2023CVE publishedPublication date reported by the CVE source.
- Mar 19, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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What conditions does exploitation require?
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
- Fixed TelemetryService temporary-directory proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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