Executive Summary
| Summary | |
|---|---|
| Title | samba security, bug fix, and enhancement update |
| Informations | |||
|---|---|---|---|
| Name | RHSA-2012:0313 | First vendor Publication | 2012-02-21 |
| Vendor | RedHat | Last vendor Modification | 2012-02-21 |
| Severity (Vendor) | Low | Revision | 03 |
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:S/C:P/I:N/A:N) | |||
|---|---|---|---|
| Cvss Base Score | 3.5 | Attack Range | Network |
| Cvss Impact Score | 2.9 | Attack Complexity | Medium |
| Cvss Expoit Score | 6.8 | Authentication | Requires single instance |
| Calculate full CVSS 2.0 Vectors scores | |||
Detail
| Problem Description: Updated samba packages that fix one security issue, one bug, and add one enhancement are now available for Red Hat Enterprise Linux 5. The Red Hat Security Response Team has rated this update as having low security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section. 2. Relevant releases/architectures: RHEL Desktop Workstation (v. 5 client) - i386, x86_64 Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64 Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64 3. Description: Samba is an open-source implementation of the Server Message Block (SMB) or Common Internet File System (CIFS) protocol, which allows PC-compatible machines to share files, printers, and other information. The default Samba server configuration enabled both the "wide links" and "unix extensions" options, allowing Samba clients with write access to a share to create symbolic links that point to any location on the file system. Clients connecting with CIFS UNIX extensions disabled could have such links resolved on the server, allowing them to access and possibly overwrite files outside of the share. With this update, "wide links" is set to "no" by default. In addition, the update ensures "wide links" is disabled for shares that have "unix extensions" enabled. (CVE-2010-0926) Warning: This update may cause files and directories that are only linked to Samba shares using symbolic links to become inaccessible to Samba clients. In deployments where support for CIFS UNIX extensions is not needed (such as when files are exported to Microsoft Windows clients), administrators may prefer to set the "unix extensions" option to "no" to allow the use of symbolic links to access files out of the shared directories. All existing symbolic links in a share should be reviewed before re-enabling "wide links". These updated samba packages also fix the following bug: * The smbclient tool sometimes failed to return the proper exit status code. Consequently, using smbclient in a script caused some scripts to fail. With this update, an upstream patch has been applied and smbclient now returns the correct exit status. (BZ#768908) In addition, these updated samba packages provide the following enhancement: * With this update, support for Windows Server 2008 R2 domains has been added. (BZ#736124) Users are advised to upgrade to these updated samba packages, which correct these issues and add this enhancement. After installing this update, the smb service will be restarted automatically. 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/): 562568 - CVE-2010-0926 samba: insecure "wide links" default |
Original Source
| Url : https://rhn.redhat.com/errata/RHSA-2012-0313.html |
CWE : Common Weakness Enumeration
| % | Id | Name |
|---|---|---|
| 100 % | CWE-22 | Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') (CWE/SANS Top 25) |
OVAL Definitions
| Definition Id: oval:org.mitre.oval:def:20961 | |||
| Oval ID: | oval:org.mitre.oval:def:20961 | ||
| Title: | RHSA-2012:0313: samba security, bug fix, and enhancement update (Low) | ||
| Description: | The default configuration of smbd in Samba before 3.3.11, 3.4.x before 3.4.6, and 3.5.x before 3.5.0rc3, when a writable share exists, allows remote authenticated users to leverage a directory traversal vulnerability, and access arbitrary files, by using the symlink command in smbclient to create a symlink containing .. (dot dot) sequences, related to the combination of the unix extensions and wide links options. | ||
| Family: | unix | Class: | patch |
| Reference(s): | RHSA-2012:0313-03 CVE-2010-0926 | Version: | 4 |
| Platform(s): | Red Hat Enterprise Linux 5 | Product(s): | samba |
| Definition Synopsis: | |||
| Definition Id: oval:org.mitre.oval:def:23240 | |||
| Oval ID: | oval:org.mitre.oval:def:23240 | ||
| Title: | ELSA-2012:0313: samba security, bug fix, and enhancement update (Low) | ||
| Description: | The default configuration of smbd in Samba before 3.3.11, 3.4.x before 3.4.6, and 3.5.x before 3.5.0rc3, when a writable share exists, allows remote authenticated users to leverage a directory traversal vulnerability, and access arbitrary files, by using the symlink command in smbclient to create a symlink containing .. (dot dot) sequences, related to the combination of the unix extensions and wide links options. | ||
| Family: | unix | Class: | patch |
| Reference(s): | ELSA-2012:0313-03 CVE-2010-0926 | Version: | 6 |
| Platform(s): | Oracle Linux 5 | Product(s): | samba |
| Definition Synopsis: | |||
| |||
| Definition Id: oval:org.mitre.oval:def:27882 | |||
| Oval ID: | oval:org.mitre.oval:def:27882 | ||
| Title: | DEPRECATED: ELSA-2012-0313 -- samba security, bug fix, and enhancement update (low) | ||
| Description: | [3.0.33-3.37.el5] - Regenerate manpage for 'wide links' and 'unix extensions' sections - related: #722553 [3.0.33-3.36.el5] - Security Release, fixes CVE-2010-0926 - resolves: #722553 [3.0.33-3.35.el5] - Fix smbclient return code - resolves: #768908 [3.0.33-3.34.el5] - Fix support for Windows 2008 R2 domains - resolves: #736124 [3.0.33-3.33.el5] - Security Release, fixes CVE-2010-0547, CVE-2010-0787, CVE-2011-2694, CVE-2011-2522, CVE-2011-1678, CVE-2011-2724 - resolves: #722553 [3.0.33-3.32.el5] - Security Release, fixes CVE-2011-0719 - resolves: #678331 [3.0.33-3.30.el5] - Security Release, fixes CVE-2010-3069 - resolves: #632230 | ||
| Family: | unix | Class: | patch |
| Reference(s): | ELSA-2012-0313 CVE-2010-0926 | Version: | 4 |
| Platform(s): | Oracle Linux 5 | Product(s): | samba |
| Definition Synopsis: | |||
| |||
CPE : Common Platform Enumeration
OpenVAS Exploits
| Date | Description |
|---|---|
| 2012-02-21 | Name : RedHat Update for samba RHSA-2012:0313-03 File : nvt/gb_RHSA-2012_0313-03_samba.nasl |
| 2010-03-31 | Name : Ubuntu Update for samba vulnerability USN-918-1 File : nvt/gb_ubuntu_USN_918_1.nasl |
Open Source Vulnerability Database (OSVDB)
| Id | Description |
|---|---|
| 62145 | Samba Guest Account Symlink Traversal Arbitrary File Access |
Nessus® Vulnerability Scanner
| Date | Description |
|---|---|
| 2013-07-12 | Name : The remote Oracle Linux host is missing one or more security updates. File : oraclelinux_ELSA-2012-0313.nasl - Type : ACT_GATHER_INFO |
| 2012-02-21 | Name : The remote Red Hat host is missing one or more security updates. File : redhat-RHSA-2012-0313.nasl - Type : ACT_GATHER_INFO |
| 2010-10-11 | Name : The remote SuSE 10 host is missing a security-related patch. File : suse_cifs-mount-6921.nasl - Type : ACT_GATHER_INFO |
| 2010-04-09 | Name : The remote SuSE 9 host is missing a security-related patch. File : suse9_12595.nasl - Type : ACT_GATHER_INFO |
| 2010-04-09 | Name : The remote SuSE 10 host is missing a security-related patch. File : suse_cifs-mount-6920.nasl - Type : ACT_GATHER_INFO |
| 2010-03-25 | Name : The remote openSUSE host is missing a security update. File : suse_11_0_cifs-mount-100312.nasl - Type : ACT_GATHER_INFO |
| 2010-03-25 | Name : The remote openSUSE host is missing a security update. File : suse_11_1_cifs-mount-100312.nasl - Type : ACT_GATHER_INFO |
| 2010-03-25 | Name : The remote openSUSE host is missing a security update. File : suse_11_2_cifs-mount-100315.nasl - Type : ACT_GATHER_INFO |
| 2010-03-25 | Name : The remote Ubuntu host is missing one or more security-related patches. File : ubuntu_USN-918-1.nasl - Type : ACT_GATHER_INFO |
| 2010-03-23 | Name : The remote SuSE 11 host is missing one or more security updates. File : suse_11_cifs-mount-100312.nasl - Type : ACT_GATHER_INFO |
| 2010-02-08 | Name : The remote file server is prone to a symlink attack. File : samba_symlink_dir_traversal.nasl - Type : ACT_DESTRUCTIVE_ATTACK |
Alert History
| Date | Informations |
|---|---|
| 2014-02-17 11:55:43 |
|
