FreeBSD up to 10.1 namei resource management

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CTI Interest Score
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4.6$0-$5k0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in FreeBSD 9.1/9.2/9.3/10.0/10.1. This affects an unknown part of the component namei. Such manipulation leads to resource management. This vulnerability is listed as CVE-2014-3711. There is no available exploit. Applying a patch is advised to resolve this issue.

Detailsinfo

A vulnerability was found in FreeBSD 9.1/9.2/9.3/10.0/10.1 (Operating System). It has been rated as problematic. Affected by this issue is an unknown functionality of the component namei. The manipulation with an unknown input leads to a resource management vulnerability. Using CWE to declare the problem leads to CWE-399. Impacted is availability. CVE summarizes:

namei in FreeBSD 9.1 through 10.1-RC2 allows remote attackers to cause a denial of service (memory exhaustion) via vectors that trigger a sandboxed process to look up a large number of nonexistent path names.

The weakness was presented 10/21/2014 by Mateusz Guzik as FreeBSD-SA-14:22.namei as confirmed advisory (Website). The advisory is shared for download at security.FreeBSD.org. This vulnerability is handled as CVE-2014-3711 since 05/14/2014. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The advisory points out:

The namei facility will leak a small amount of kernel memory every time a sandboxed process looks up a nonexistent path name.

The vulnerability scanner Nessus provides a plugin with the ID 79066 (Debian DSA-3070-1 : kfreebsd-9 - security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks. The advisory illustrates:

A remote attacker that can cause a sandboxed process (for instance, a web server) to look up a large number of nonexistent path names can cause memory exhaustion.

Applying a patch is able to eliminate this problem. A possible mitigation has been published immediately after the disclosure of the vulnerability. The advisory contains the following remark:

Systems that do not have Capsicum enabled or do not run services that use Capsicum are not vulnerable.

The vulnerability is also documented in the databases at X-Force (97720), Tenable (79066), SecurityFocus (BID 70692†), Secunia (SA62218†) and SecurityTracker (ID 1031100†). See VDB-67019, VDB-67048 and VDB-68113 for similar entries. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.6

VulDB Base Score: 5.3
VulDB Temp Score: 4.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

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

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 79066
Nessus Name: Debian DSA-3070-1 : kfreebsd-9 - security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 703070
OpenVAS Name: Debian Security Advisory DSA 3070-1 (kfreebsd-9 - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Patch
Status: 🔍

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

Timelineinfo

05/14/2014 🔍
10/21/2014 +160 days 🔍
10/21/2014 +0 days 🔍
10/21/2014 +0 days 🔍
10/21/2014 +0 days 🔍
10/22/2014 +1 days 🔍
10/22/2014 +0 days 🔍
10/23/2014 +1 days 🔍
10/27/2014 +4 days 🔍
11/10/2014 +14 days 🔍
11/10/2014 +0 days 🔍
02/23/2022 +2662 days 🔍

Sourcesinfo

Product: freebsd.org

Advisory: FreeBSD-SA-14:22.namei
Researcher: Mateusz Guzik
Status: Confirmed

CVE: CVE-2014-3711 (🔍)
GCVE (CVE): GCVE-0-2014-3711
GCVE (VulDB): GCVE-100-68048

OVAL: 🔍

X-Force: 97720 - FreeBSD namei kernel facility denial of service, Medium Risk
SecurityFocus: 70692 - FreeBSD namei CVE-2014-3711 Remote Denial of Service Vulnerability
Secunia: 62218 - Debian update for kfreebsd-9, Not Critical
SecurityTracker: 1031100 - FreeBSD namei Kernel Facility Memory Leak Lets Remote Users Deny Service
Vulnerability Center: 46734 - FreeBSD 9.1 through 10.1 Remote Information Disclosure in Naemi Kernel Facility - CVE-2014-3711, Medium

See also: 🔍

Entryinfo

Created: 10/22/2014 16:55
Updated: 02/23/2022 15:27
Changes: 10/22/2014 16:55 (86), 06/09/2017 07:34 (3), 02/23/2022 15:27 (3)
Complete: 🔍
Cache ID: 216::103

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