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Description

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

PUBLISHED Reserved 2025-01-15 | Published 2025-05-26 | Updated 2025-05-27 | Assigner suse




HIGH: 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

HIGH: 7.3CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Problem types

CWE-271: Privilege Dropping / Lowering Errors

Product status

Default status
unaffected

5.0 (semver)
affected

Credits

Matthias Gerstner, SUSE finder

References

www.openwall.com/lists/oss-security/2025/05/12/1 exploit

bugzilla.suse.com/show_bug.cgi?id=CVE-2025-23395

www.openwall.com/lists/oss-security/2025/05/12/1

cve.org (CVE-2025-23395)

nvd.nist.gov (CVE-2025-23395)

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