Linux Kernel up to 4.4 Data Pipe fs/pipe.c resource management

CVSS Meta Temp Score
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CTI Interest Score
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6.0$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in Linux Kernel up to 4.4. Affected by this vulnerability is an unknown functionality of the file fs/pipe.c of the component Data Pipe Handler. The manipulation results in resource management. This vulnerability is reported as CVE-2016-2847. The attack requires a local approach. No exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as problematic has been found in Linux Kernel up to 4.4 (Operating System). Affected is an unknown code block of the file fs/pipe.c of the component Data Pipe Handler. The manipulation with an unknown input leads to a resource management vulnerability. CWE is classifying the issue as CWE-399. This is going to have an impact on availability. CVE summarizes:

fs/pipe.c in the Linux kernel before 4.5 does not limit the amount of unread data in pipes, which allows local users to cause a denial of service (memory consumption) by creating many pipes with non-default sizes.

The weakness was disclosed 04/27/2016 by Tetsuo Handa (oss-sec). The advisory is available at openwall.com. This vulnerability is traded as CVE-2016-2847 since 03/06/2016. Local access is required to approach this attack. The requirement for exploitation is a authentication. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 89966 (Amazon Linux AMI : kernel (ALAS-2016-669)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Amazon Linux Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 196446 (Ubuntu Security Notification for Linux-lts-vivid Vulnerabilities (USN-2949-1)).

Upgrading to version 4.5 eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (89966), SecurityFocus (BID 83870†) and Vulnerability Center (SBV-57975†). The entries VDB-81089, VDB-82952 and VDB-82954 are pretty similar. 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: 6.2
VulDB Meta Temp Score: 6.1

VulDB Base Score: 6.2
VulDB Temp Score: 5.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.2
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Resource management
CWE: CWE-399 / 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: 89966
Nessus Name: Amazon Linux AMI : kernel (ALAS-2016-669)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 80009
OpenVAS Name: Ubuntu Update for linux-lts-vivid USN-2949-1
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 4.5
Patch: git.kernel.org

Timelineinfo

03/01/2016 🔍
03/06/2016 +5 days 🔍
03/16/2016 +10 days 🔍
03/17/2016 +1 days 🔍
04/06/2016 +20 days 🔍
04/07/2016 +1 days 🔍
04/27/2016 +20 days 🔍
04/27/2016 +0 days 🔍
04/28/2016 +1 days 🔍
07/27/2022 +2281 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: USN-2946-1
Researcher: Tetsuo Handa
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-2847 (🔍)
GCVE (CVE): GCVE-0-2016-2847
GCVE (VulDB): GCVE-100-82962
SecurityFocus: 83870 - Linux Kernel 'fs/pipe.c' Local Denial of Service Vulnerability
Vulnerability Center: 57975 - Linux Kernel before 4.4.4 Local DoS due to Improper Limits on the Amount of Data Allocated to Buffer Pipes, Medium

See also: 🔍

Entryinfo

Created: 04/28/2016 10:25
Updated: 07/27/2022 08:24
Changes: 04/28/2016 10:25 (73), 02/03/2019 10:56 (14), 07/27/2022 08:21 (4), 07/27/2022 08:24 (1)
Complete: 🔍
Cache ID: 216:9B0:103

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