linux-image package 3.2.0-4 on Debian Linux F_SETFL fcntl Call fs/fcntl.c null pointer dereference

CVSS Meta Temp Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in linux-image package 3.2.0-4 on Debian Linux. This affects an unknown function of the file fs/fcntl.c of the component F_SETFL fcntl Call Handler. Performing a manipulation results in null pointer dereference. This vulnerability is identified as CVE-2016-7118. The attack is only possible with local access. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in linux-image package 3.2.0-4 on Debian Linux. This affects an unknown code of the file fs/fcntl.c of the component F_SETFL fcntl Call Handler. The manipulation with an unknown input leads to a null pointer dereference vulnerability. CWE is classifying the issue as CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. This is going to have an impact on availability. The summary by CVE is:

fs/fcntl.c in the "aufs 3.2.x+setfl-debian" patch in the linux-image package 3.2.0-4 (kernel 3.2.81-1) in Debian wheezy mishandles F_SETFL fcntl calls on directories, which allows local users to cause a denial of service (NULL pointer dereference and system crash) via standard filesystem operations, as demonstrated by scp from an AUFS filesystem.

The weakness was released 08/31/2016 (Website). It is possible to read the advisory at openwall.com. This vulnerability is uniquely identified as CVE-2016-7118 since 08/31/2016. The exploitability is told to be easy. Attacking locally is a requirement. A authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 93321 (Debian DLA-609-1 : linux 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 and running in the context l.

Upgrading eliminates this vulnerability. A possible mitigation has been published 3 days after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (93321) and SecurityFocus (BID 92697†). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.4

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 93321
Nessus Name: Debian DLA-609-1 : linux security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Timelineinfo

08/31/2016 🔍
08/31/2016 +0 days 🔍
08/31/2016 +0 days 🔍
08/31/2016 +0 days 🔍
09/01/2016 +1 days 🔍
09/03/2016 +2 days 🔍
09/06/2016 +3 days 🔍
04/05/2019 +941 days 🔍

Sourcesinfo

Advisory: openwall.com
Status: Not defined

CVE: CVE-2016-7118 (🔍)
GCVE (CVE): GCVE-0-2016-7118
GCVE (VulDB): GCVE-100-91011
SecurityFocus: 92697 - Linux Kernel 'fs/fcntl.c' Local Denial of Service Vulnerability

Entryinfo

Created: 09/01/2016 09:20
Updated: 04/05/2019 22:20
Changes: 09/01/2016 09:20 (57), 04/05/2019 22:20 (14)
Complete: 🔍
Cache ID: 216::103

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