CVE-2010-0789
Description
From CVE.org
fusermount in FUSE before 2.7.5, and 2.8.x before 2.8.2, allows local users to unmount an arbitrary FUSE filesystem share via a symlink attack on a mountpoint.
Statement
This issue affects Red Hat Enterprise Linux 5 because it ships fusermount suid root, however the impact of this flaw is minimized due to the fact that only members in group fuse may use it the executable is owned root:fuse and mode 4750.
Red Hat Enterprise Linux 3 and 4 do not provide the fuse package.
The Red Hat Product Security has rated this issue as having low security impact, a future update may address this flaw. More information regarding issue severity can be found here:
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v2 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 1.7 | 3.3 | N/A |
| Attack Vector | Local | Local | N/A |
| Access Complexity | Low | Medium | N/A |
| Authentication | Single | None | N/A |
| Confidentiality Impact | None | None | N/A |
| Integrity Impact | None | Partial | N/A |
| Availability Impact | Partial | Partial | N/A |
Vector
Red Hat: AV:L/AC:L/Au:S/C:N/I:N/A:P
NVD: AV:L/AC:M/Au:N/C:N/I:P/A:P
Acknowledgements
Red Hat would like to thank Dan Rosenberg for reporting this issue.
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