CVE-2025-23395
Local root exploit via `logfile_reopen()` in screen 5.0.0 with setuid-root bit set
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Local root exploit via `logfile_reopen()` in screen 5.0.0 with setuid-root bit set
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
Reserved 2025-01-15 | Published 2025-05-26 | Updated 2025-05-27 | Assigner suseCWE-271: Privilege Dropping / Lowering Errors
Matthias Gerstner, SUSE
bugzilla.suse.com/show_bug.cgi?id=CVE-2025-23395
www.openwall.com/lists/oss-security/2025/05/12/1
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