Execution with Unnecessary Privileges Affecting screen package, versions [5.0.0,5.1.0)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UNMANAGED-SCREEN-10123645
- published14 May 2025
- disclosed13 May 2025
- creditUnknown
Introduced: 13 May 2025
CVE-2025-23395 (opens in a new tab)How to fix?
Upgrade screen to version 5.1.0 or higher.
Overview
Affected versions of this package are vulnerable to Execution with Unnecessary Privileges due to the logfile_reopen() function. An unprivileged user can create files in arbitrary locations with root ownership.
Note:
This is only exploitable when logfile_reopen() function is running with setuid-root privileges that are not being dropped while operating on a user-supplied path. The fixed PTY permissions are limited to write-read, so despite gaining a higher privileges an attacker can't perform arbitrary code execution.