CVE-2025-23395

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

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://bugzilla.suse.com/show_bug.cgi?id=CVE-2025-23395
https://www.openwall.com/lists/oss-security/2025/05/12/1
https://www.openwall.com/lists/oss-security/2025/05/12/1

Configurations

No configuration.

History

27 May 2025, 14:15

Type	Values Removed	Values Added
Summary		(es) Screen 5.0.0, al ejecutarse con privilegios setuid-root, no pierde privilegios al operar en una ruta proporcionada por el usuario. Esto permite a usuarios sin privilegios crear archivos en ubicaciones arbitrarias con propiedad root, la propiedad del grupo (real) del usuario que los invoca y el modo de archivo 0644. Todos los datos escritos en el PTY de Screen se registrarán en este archivo, lo que permite escalar a privilegios root.
References	~~() https://www.openwall.com/lists/oss-security/2025/05/12/1 -~~	() https://www.openwall.com/lists/oss-security/2025/05/12/1 -

26 May 2025, 16:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2025-05-26 16:15

Updated : 2025-05-28 15:01

NVD link : CVE-2025-23395

Mitre link : CVE-2025-23395

CVE.ORG link : CVE-2025-23395

JSON object : View

Products Affected

No product.

CWE

CWE-271

Privilege Dropping / Lowering Errors

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