FreeBSD 10.0 Device Filesystem Rule Set etc_rc.d access control

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3.5$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in FreeBSD 10.0. This affects an unknown part of the file etc_rc.d of the component Device Filesystem Rule Set Handler. The manipulation leads to access control. This vulnerability is listed as CVE-2014-3001. There is no available exploit. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability was found in FreeBSD 10.0 (Operating System). It has been rated as problematic. This issue affects some unknown processing of the file etc_rc.d of the component Device Filesystem Rule Set Handler. The manipulation with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-264. Impacted is integrity. The summary by CVE is:

The device file system (aka devfs) in FreeBSD 10.0 before p2 does not load default rulesets when booting, which allows context-dependent attackers to bypass intended restrictions by leveraging a jailed device node process.

The weakness was presented 04/30/2014 as FreeBSD-SA-14:07.devfs as confirmed advisory (Website). It is possible to read the advisory at freebsd.org. The identification of this vulnerability is CVE-2014-3001 since 04/25/2014. The exploitation is known to be easy. Attacking locally is a requirement. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK. The advisory points out:

The default devfs rulesets are not loaded on boot, even when jails are used. Device nodes will be created in the jail with their normal default access permissions, while most of them should be hidden and inaccessible. Jailed processes can get access to restricted resources on the host system. For jailed processes running with superuser privileges this implies access to all devices on the system. This level of access could lead to information leakage and privilege escalation.

The vulnerability scanner Nessus provides a plugin with the ID 92899 (FreeBSD : FreeBSD -- devfs rules not applied by default for jails (6b6ca5b6-6007-11e6-a6c3-14dae9d210b8)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family FreeBSD Local Security Checks.

Applying the patch SA-14:07 is able to eliminate this problem. The bugfix is ready for download at security.FreeBSD.org. It is possible to mitigate the problem by applying the configuration setting devfs -m ${devfs_mountpoint} rule -s 4 applyset. The best possible mitigation is suggested to be patching the affected component. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (92983), Tenable (92899), SecurityFocus (BID 67158†), SecurityTracker (ID 1030171†) and Vulnerability Center (SBV-44404†). See VDB-13104 for similar entry. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.0
VulDB Meta Temp Score: 3.5

VulDB Base Score: 4.0
VulDB Temp Score: 3.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 92899
Nessus Name: FreeBSD : FreeBSD -- devfs rules not applied by default for jails (6b6ca5b6-6007-11e6-a6c3-14dae9d210b8)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

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

Patch: SA-14:07
Config: devfs -m ${devfs_mountpoint} rule -s 4 applyset

Timelineinfo

04/25/2014 🔍
04/30/2014 +5 days 🔍
04/30/2014 +0 days 🔍
04/30/2014 +0 days 🔍
04/30/2014 +0 days 🔍
04/30/2014 +0 days 🔍
04/30/2014 +0 days 🔍
05/02/2014 +2 days 🔍
05/07/2014 +5 days 🔍
05/12/2026 +4388 days 🔍

Sourcesinfo

Product: freebsd.org

Advisory: FreeBSD-SA-14:07.devfs
Status: Confirmed

CVE: CVE-2014-3001 (🔍)
GCVE (CVE): GCVE-0-2014-3001
GCVE (VulDB): GCVE-100-13103
X-Force: 92983 - FreeBSD devfs security bypass, Low Risk
SecurityFocus: 67158 - FreeBSD CVE-2014-3001 Local Security Bypass Vulnerability
SecurityTracker: 1030171 - FreeBSD Kernel devfs Rule Bypass Flaw Lets Local Users Gain Elevated Privileges
Vulnerability Center: 44404 - FreeBSD 10.0 Local Security Bypass Vulnerability due to an Error in the devfs Component, Low

See also: 🔍

Entryinfo

Created: 04/30/2014 22:10
Updated: 05/12/2026 16:31
Changes: 04/30/2014 22:10 (72), 05/27/2017 10:44 (8), 06/19/2021 08:39 (3), 05/12/2026 16:31 (15)
Complete: 🔍
Cache ID: 216::103

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