Executive Summary
| Summary | |
|---|---|
| Title | fuse security update |
| Informations | |||
|---|---|---|---|
| Name | RHSA-2011:1083 | First vendor Publication | 2011-07-20 |
| Vendor | RedHat | Last vendor Modification | 2011-07-20 |
| Severity (Vendor) | Moderate | Revision | 01 |
Security-Database Scoring CVSS v3
| Cvss vector : N/A | |||
|---|---|---|---|
| Overall CVSS Score | NA | ||
| Base Score | NA | Environmental Score | NA |
| impact SubScore | NA | Temporal Score | NA |
| Exploitabality Sub Score | NA | ||
| Calculate full CVSS 3.0 Vectors scores | |||
Security-Database Scoring CVSS v2
| Cvss vector : (AV:N/AC:M/Au:N/C:N/I:P/A:P) | |||
|---|---|---|---|
| Cvss Base Score | 5.8 | Attack Range | Network |
| Cvss Impact Score | 4.9 | Attack Complexity | Medium |
| Cvss Expoit Score | 8.6 | Authentication | None Required |
| Calculate full CVSS 2.0 Vectors scores | |||
Detail
| Problem Description: Updated fuse packages that fix multiple security issues are now available for Red Hat Enterprise Linux 6. The Red Hat Security Response Team has rated this update as having moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. 2. Relevant releases/architectures: Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64 Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64 Red Hat Enterprise Linux HPC Node (v. 6) - x86_64 Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64 Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64 3. Description: FUSE (Filesystem in Userspace) can implement a fully functional file system in a user-space program. These packages provide the mount utility, fusermount, the tool used to mount FUSE file systems. Multiple flaws were found in the way fusermount handled the mounting and unmounting of directories when symbolic links were present. A local user in the fuse group could use these flaws to unmount file systems, which they would otherwise not be able to unmount and that were not mounted using FUSE, via a symbolic link attack. (CVE-2010-3879, CVE-2011-0541, CVE-2011-0542, CVE-2011-0543) Note: The util-linux-ng RHBA-2011:0699 update must also be installed to fully correct the above flaws. All users should upgrade to these updated packages, which contain backported patches to correct these issues. 4. Solution: Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/kb/docs/DOC-11259 5. Bugs fixed (http://bugzilla.redhat.com/): 651183 - CVE-2010-3879 CVE-2011-0541 CVE-2011-0542 CVE-2011-0543 fuse: unprivileged user can unmount arbitrary locations via symlink attack |
Original Source
| Url : https://rhn.redhat.com/errata/RHSA-2011-1083.html |
CWE : Common Weakness Enumeration
| % | Id | Name |
|---|---|---|
| 50 % | CWE-264 | Permissions, Privileges, and Access Controls |
| 50 % | CWE-59 | Improper Link Resolution Before File Access ('Link Following') |
OVAL Definitions
| Definition Id: oval:org.mitre.oval:def:13095 | |||
| Oval ID: | oval:org.mitre.oval:def:13095 | ||
| Title: | USN-1045-1 -- fuse vulnerability | ||
| Description: | It was discovered that FUSE could be tricked into incorrectly updating the mtab file when mounting filesystems. A local attacker, with access to use FUSE, could unmount arbitrary locations, leading to a denial of service. | ||
| Family: | unix | Class: | patch |
| Reference(s): | USN-1045-1 CVE-2010-3879 | Version: | 5 |
| Platform(s): | Ubuntu 8.04 Ubuntu 10.10 Ubuntu 9.10 Ubuntu 10.04 | Product(s): | fuse |
| Definition Synopsis: | |||
| |||
| Definition Id: oval:org.mitre.oval:def:13431 | |||
| Oval ID: | oval:org.mitre.oval:def:13431 | ||
| Title: | USN-1077-1 -- fuse vulnerabilities | ||
| Description: | It was discovered that FUSE would incorrectly follow symlinks when checking mountpoints under certain conditions. A local attacker, with access to use FUSE, could unmount arbitrary locations, leading to a denial of service. | ||
| Family: | unix | Class: | patch |
| Reference(s): | USN-1077-1 CVE-2011-0541 CVE-2011-0542 CVE-2011-0543 | Version: | 5 |
| Platform(s): | Ubuntu 8.04 Ubuntu 10.10 Ubuntu 9.10 Ubuntu 10.04 | Product(s): | fuse |
| Definition Synopsis: | |||
| |||
| Definition Id: oval:org.mitre.oval:def:21871 | |||
| Oval ID: | oval:org.mitre.oval:def:21871 | ||
| Title: | RHSA-2011:1083: fuse security update (Moderate) | ||
| Description: | Certain legacy functionality in fusermount in fuse 2.8.5 and earlier, when util-linux does not support the --no-canonicalize option, allows local users to bypass intended access restrictions and unmount arbitrary directories via a symlink attack. | ||
| Family: | unix | Class: | patch |
| Reference(s): | RHSA-2011:1083-01 CVE-2010-3879 CVE-2011-0541 CVE-2011-0542 CVE-2011-0543 | Version: | 55 |
| Platform(s): | Red Hat Enterprise Linux 6 | Product(s): | fuse |
| Definition Synopsis: | |||
| Definition Id: oval:org.mitre.oval:def:23608 | |||
| Oval ID: | oval:org.mitre.oval:def:23608 | ||
| Title: | ELSA-2011:1083: fuse security update (Moderate) | ||
| Description: | Certain legacy functionality in fusermount in fuse 2.8.5 and earlier, when util-linux does not support the --no-canonicalize option, allows local users to bypass intended access restrictions and unmount arbitrary directories via a symlink attack. | ||
| Family: | unix | Class: | patch |
| Reference(s): | ELSA-2011:1083-01 CVE-2010-3879 CVE-2011-0541 CVE-2011-0542 CVE-2011-0543 | Version: | 21 |
| Platform(s): | Oracle Linux 6 | Product(s): | fuse |
| Definition Synopsis: | |||
| Definition Id: oval:org.mitre.oval:def:27658 | |||
| Oval ID: | oval:org.mitre.oval:def:27658 | ||
| Title: | DEPRECATED: ELSA-2011-1083 -- fuse security update (moderate) | ||
| Description: | [2.8.3-3] - Bump the release since the bz was set to the wrong target [2.8.3-2] - Fix another umount race (bz# 673250, CVE-2010-3879) | ||
| Family: | unix | Class: | patch |
| Reference(s): | ELSA-2011-1083 CVE-2010-3879 CVE-2011-0541 CVE-2011-0542 CVE-2011-0543 | Version: | 4 |
| Platform(s): | Oracle Linux 6 | Product(s): | fuse |
| Definition Synopsis: | |||
CPE : Common Platform Enumeration
OpenVAS Exploits
| Date | Description |
|---|---|
| 2012-06-06 | Name : RedHat Update for fuse RHSA-2011:1083-01 File : nvt/gb_RHSA-2011_1083-01_fuse.nasl |
| 2011-03-07 | Name : Ubuntu Update for fuse vulnerabilities USN-1077-1 File : nvt/gb_ubuntu_USN_1077_1.nasl |
| 2011-02-11 | Name : Fedora Update for util-linux-ng FEDORA-2011-0854 File : nvt/gb_fedora_2011_0854_util-linux-ng_fc14.nasl |
| 2011-01-21 | Name : Ubuntu Update for fuse vulnerability USN-1045-1 File : nvt/gb_ubuntu_USN_1045_1.nasl |
| 2011-01-21 | Name : Ubuntu Update for util-linux update USN-1045-2 File : nvt/gb_ubuntu_USN_1045_2.nasl |
Open Source Vulnerability Database (OSVDB)
| Id | Description |
|---|---|
| 74709 | Fuse Symlink Arbitrary Directory Unmount |
| 74708 | Fuse Unspecified Timing Attack Current Directory Manipulation Weakness |
| 74707 | Fuse --no-canonicalize Compatibility Fallback Insecure Mounting Weakness |
| 70520 | Fuse fusermount Arbitrary Unmount Local DoS FUSE contains a flaw that may allow a local denial of service. The issue is triggered when an error within the 'fusermount' utility when performing unmount operations occurs, allowing a local attacker to cause a denial of service by unmounting arbitrary mounts via symlink attacks. |
Nessus® Vulnerability Scanner
| Date | Description |
|---|---|
| 2014-06-13 | Name : The remote openSUSE host is missing a security update. File : suse_11_3_fuse-110228.nasl - Type : ACT_GATHER_INFO |
| 2013-07-12 | Name : The remote Oracle Linux host is missing one or more security updates. File : oraclelinux_ELSA-2011-1083.nasl - Type : ACT_GATHER_INFO |
| 2013-04-30 | Name : The remote Mandriva Linux host is missing one or more security updates. File : mandriva_MDVSA-2013-154.nasl - Type : ACT_GATHER_INFO |
| 2012-08-01 | Name : The remote Scientific Linux host is missing one or more security updates. File : sl_20110720_fuse_on_SL6_x.nasl - Type : ACT_GATHER_INFO |
| 2011-12-13 | Name : The remote SuSE 10 host is missing a security-related patch. File : suse_util-linux-and-fuse-201103-7418.nasl - Type : ACT_GATHER_INFO |
| 2011-07-21 | Name : The remote Red Hat host is missing one or more security updates. File : redhat-RHSA-2011-1083.nasl - Type : ACT_GATHER_INFO |
| 2011-05-05 | Name : The remote openSUSE host is missing a security update. File : suse_11_2_fuse-110228.nasl - Type : ACT_GATHER_INFO |
| 2011-04-01 | Name : The remote SuSE 10 host is missing a security-related patch. File : suse_util-linux-and-fuse-201103-7362.nasl - Type : ACT_GATHER_INFO |
| 2011-03-31 | Name : The remote SuSE 11 host is missing one or more security updates. File : suse_11_util-linux-and-fuse-201103-110302.nasl - Type : ACT_GATHER_INFO |
| 2011-03-01 | Name : The remote Ubuntu host is missing one or more security-related patches. File : ubuntu_USN-1077-1.nasl - Type : ACT_GATHER_INFO |
| 2011-02-08 | Name : The remote Fedora host is missing a security update. File : fedora_2011-0854.nasl - Type : ACT_GATHER_INFO |
| 2011-01-20 | Name : The remote Ubuntu host is missing one or more security-related patches. File : ubuntu_USN-1045-1.nasl - Type : ACT_GATHER_INFO |
| 2011-01-20 | Name : The remote Ubuntu host is missing one or more security-related patches. File : ubuntu_USN-1045-2.nasl - Type : ACT_GATHER_INFO |
Alert History
| Date | Informations |
|---|---|
| 2014-02-17 11:54:54 |
|
