National Vulnerability Database (NVD) National Vulnerability Database (CVE-2010-0789)

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Vulnerability Summary for CVE-2010-0789

Original release date:03/02/2010

Last revised:06/23/2010

Source: US-CERT/NIST

Overview

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.

Impact

CVSS Severity (version 2.0):

CVSS v2 Base Score:3.3 (LOW) (AV:L/AC:M/Au:N/C:N/I:P/A:P) (legend)

Impact Subscore: 4.9

Exploitability Subscore: 3.4

CVSS Version 2 Metrics:

Access Vector: Locally exploitable

Access Complexity: Medium

Authentication: Not required to exploit

Impact Type:Allows unauthorized modification; Allows disruption of service

Vendor Statements (disclaimer)

Official Statement from Red Hat (04/07/2010)

Red Hat is aware of this issue and is tracking it via the following bug: https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=CVE-2010-0789 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 Security Response Team 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: http://www.redhat.com/security/updates/classification/

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External Source: CONFIRM

Name: https://bugzilla.redhat.com/show_bug.cgi?id=532940

Type: Patch Information

Hyperlink:https://bugzilla.redhat.com/show_bug.cgi?id=532940

External Source: BID

Name: 37983

Type: Patch Information

Hyperlink:http://www.securityfocus.com/bid/37983

External Source: DEBIAN

Name: DSA-1989

Type: Patch Information

Hyperlink:http://www.debian.org/security/2010/dsa-1989