Linux Kernel VFS Subsystem link following

CVSS Meta Temp Score
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CTI Interest Score
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5.2$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in Linux Kernel. The affected element is an unknown function of the component VFS Subsystem. Such manipulation leads to link following. This vulnerability is listed as CVE-2014-5045. There is no available exploit.

Detailsinfo

A vulnerability was found in Linux Kernel (Operating System) (the affected version unknown). It has been rated as problematic. Affected by this issue is an unknown part of the component VFS Subsystem. The manipulation with an unknown input leads to a link following vulnerability. Using CWE to declare the problem leads to CWE-59. The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource. Impacted is confidentiality, integrity, and availability.

The weakness was presented 07/23/2014 by Vasily Averin with Parallels as confirmed mailinglist post (oss-sec). The advisory is available at seclists.org. This vulnerability is handled as CVE-2014-5045 since 07/23/2014. The exploitation is known to be easy. Local access is required to approach this attack. No form of authentication is required for exploitation. The technical details are unknown and an exploit is not available.

The vulnerability scanner Nessus provides a plugin with the ID 79181 (CentOS 6 : kernel (CESA-2014:1392)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CentOS Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 195602 (Ubuntu Security Notification for Linux-lts-trusty Vulnerabilities (USN-2336-1)).

The vulnerability is also documented in the databases at X-Force (94802), Tenable (79181), SecurityFocus (BID 68862†), Secunia (SA60353†) and Vulnerability Center (SBV-45604†). seclists.org is providing further details. See VDB-65971, VDB-65972 and VDB-65974 for similar entries. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.2

VulDB Base Score: 5.9
VulDB Temp Score: 5.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Link following
CWE: CWE-59
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 79181
Nessus Name: CentOS 6 : kernel (CESA-2014:1392)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 867487
OpenVAS Name: Fedora Update for kernel FEDORA-2014-17283
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Patch: 295dc39d941dc2ae53d5c170365af4c9d5c16212

Timelineinfo

07/23/2014 🔍
07/23/2014 +0 days 🔍
07/23/2014 +0 days 🔍
07/23/2014 +0 days 🔍
07/26/2014 +3 days 🔍
07/27/2014 +1 days 🔍
07/31/2014 +4 days 🔍
08/01/2014 +1 days 🔍
02/09/2022 +2749 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: RHSA-2014:1392
Researcher: Vasily Averin
Organization: Parallels
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2014-5045 (🔍)
GCVE (CVE): GCVE-0-2014-5045
GCVE (VulDB): GCVE-100-67238

OVAL: 🔍

X-Force: 94802 - Linux Kernel VFS privilege escalation, Medium Risk
SecurityFocus: 68862 - Linux Kernel CVE-2014-5045 Local Privilege Escalation Vulnerability
Secunia: 60353 - Linux Kernel "mountpoint_last()" Vulnerability, Less Critical
Vulnerability Center: 45604 - Linux Kernel Local Host Privilege of DoS in VFS during Unmount on Symlink, Medium

Misc.: 🔍
See also: 🔍

Entryinfo

Created: 07/26/2014 09:15
Updated: 02/09/2022 21:06
Changes: 07/26/2014 09:15 (72), 06/03/2017 07:27 (10), 02/09/2022 20:50 (6), 02/09/2022 20:58 (1), 02/09/2022 21:06 (2)
Complete: 🔍
Cache ID: 216:678:103

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