Linux Kernel up to 3.11.6 farsync.c fst_get_iface resource management

CVSS Meta Temp Score
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CTI Interest Score
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2.9$0-$5k0.00

A vulnerability was found in Linux Kernel up to 3.11.6 (Operating System) and classified as problematic. Affected by this issue is the function fst_get_iface of the file drivers/net/wan/farsync.c. The manipulation with an unknown input leads to a resource management vulnerability. Using CWE to declare the problem leads to CWE-399. Impacted is confidentiality. CVE summarizes:

The fst_get_iface function in drivers/net/wan/farsync.c in the Linux kernel before 3.11.7 does not properly initialize a certain data structure, which allows local users to obtain sensitive information from kernel memory by leveraging the CAP_NET_ADMIN capability for an SIOCWANDEV ioctl call.

The weakness was shared 10/11/2013 as farsync: fix info leak in ioctl as confirmed git commit (GIT Repository). The advisory is available at git.kernel.org. This vulnerability is handled as CVE-2014-1444 since 01/14/2014. The exploitation is known to be easy. Local access is required to approach this attack. Required for exploitation is a simple authentication. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 72857 (Ubuntu 10.04 LTS : linux vulnerabilities (USN-2128-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Ubuntu Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 195881 (Ubuntu Security Notification for Linux-lts-quantal Vulnerabilities (USN-2040-1)).

Upgrading to version 3.4.68, 3.10.18 or 3.11.7 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (90443) and Tenable (72857). The entries 12068 and 63587 are related to this item.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
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CVSSv3info

VulDB Meta Base Score: 3.3
VulDB Meta Temp Score: 2.9

VulDB Base Score: 3.3
VulDB Temp Score: 2.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
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Exploitinginfo

Class: Resource management
CWE: CWE-399 / CWE-404
ATT&CK: Unknown

Local: Yes
Remote: No

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 72857
Nessus Name: Ubuntu 10.04 LTS : linux vulnerabilities (USN-2128-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 841747
OpenVAS Name: Ubuntu Update for linux USN-2128-1
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: Kernel 3.4.68/3.10.18/3.11.7
Patch: git.kernel.org

Timelineinfo

10/11/2013 🔍
10/11/2013 +0 days 🔍
01/14/2014 +95 days 🔍
01/15/2014 +1 days 🔍
01/15/2014 +0 days 🔍
01/18/2014 +3 days 🔍
01/27/2014 +9 days 🔍
04/03/2014 +66 days 🔍
06/08/2021 +2623 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: farsync: fix info leak in ioctl
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2014-1444 (🔍)
OVAL: 🔍

X-Force: 90443 - Linux Kernel farsync.c information disclosure, Medium Risk
Vulnerability Center: 43879 - Linux Kernel <3.11.7 Local information Disclosure in ioctl via Farsync.c, Low
SecurityFocus: 64952 - Linux Kernel 'farsync.c' Local Information Disclosure Vulnerability
OSVDB: 102499

See also: 🔍

Entryinfo

Created: 01/27/2014 17:20
Updated: 06/08/2021 17:24
Changes: 01/27/2014 17:20 (81), 05/24/2017 10:58 (3), 06/08/2021 17:24 (3)
Complete: 🔍
Committer: olku

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