CVE-2025-23395 (GCVE-0-2025-23395)

Vulnerability from cvelistv5 – Published: 2025-05-26 15:18 – Updated: 2025-05-27 14:10
VLAI
Title
Local root exploit via `logfile_reopen()` in screen 5.0.0 with setuid-root bit set
Summary
Screen 5.0.0 when it runs with setuid-root privileges does not drop privileges while operating on a user supplied path. This allows unprivileged users to create files in arbitrary locations with `root` ownership, the invoking user's (real) group ownership and file mode 0644. All data written to the Screen PTY will be logged into this file, allowing to escalate to root privileges
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.3 (High)
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CWE
  • CWE-271 - Privilege Dropping / Lowering Errors
Assigner
References
Impacted products
Vendor Product Version
Affected: 5.0 , ≤ 5.0.0 (semver)
Date Public
2025-05-12 15:24
Credits
Matthias Gerstner, SUSE
Show details on NVD website
To clipboard 

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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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