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CVE-2015-3202

LowPublished

fusermount in FUSE before 2.9.3-15 does not properly clear the environment before invoking (1) mount or (2) umount as root, which allows local users to...

Published: Jul 2, 2015
Updated: Aug 6, 2024
Assigning CNA: redhat
Evidence observed: May 23, 2015

Primary CVSS

3.6/ 10Low

nvd · CVSS 2.0

AV:L/AC:L/Au:N/C:N/I:P/A:P

EPSS probability estimate

1.0%

Low · next 30 days

Percentile: 61.0%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

fusermount in FUSE before 2.9.3-15 does not properly clear the environment before invoking (1) mount or (2) umount as root, which allows local users to write to arbitrary files via a crafted LIBMOUNT_MTAB environment variable that is used by mount's debugging feature.

Sources

Fuse 2.9.3-15 - Local Privilege EscalationExploit
Tavis Ormandy · linux · May 23, 2015

Responsible use

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