Linux Kernel 4.5 in-flight fds resource management

CVSS Meta Temp Score
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CTI Interest Score
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7.0$0-$5k0.00

A vulnerability was found in Linux Kernel 4.5 (Operating System). It has been rated as critical. This issue affects an unknown functionality of the component in-flight fds. The manipulation with an unknown input leads to a resource management vulnerability. Using CWE to declare the problem leads to CWE-399. Impacted is confidentiality, integrity, and availability.

The weakness was shared 02/22/2016 by Hannes Frederic Sowa as confirmed mailinglist post (oss-sec). The advisory is shared at seclists.org. The identification of this vulnerability is CVE-2016-2550 since 02/23/2016. The exploitation is known to be easy. An attack has to be approached locally. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 90507 (Ubuntu 14.04 LTS : linux-lts-utopic regression (USN-2948-2)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Ubuntu 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)).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. A possible mitigation has been published 2 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (110990) and Tenable (90507). seclists.org is providing further details. The entries 82952 and 82962 are related to this item.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

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CVSSv3info

VulDB Meta Base Score: 7.7
VulDB Meta Temp Score: 7.0

VulDB Base Score: 9.8
VulDB Temp Score: 8.5
VulDB Vector: 🔍
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NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

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

Local: Yes
Remote: No

Availability: 🔍
Status: Unproven

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EPSS Percentile: 🔍

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Nessus ID: 90507
Nessus Name: Ubuntu 14.04 LTS : linux-lts-utopic regression (USN-2948-2)
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

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Countermeasuresinfo

Recommended: Patch
Status: 🔍

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Patch: git.kernel.org

Timelineinfo

02/22/2016 🔍
02/22/2016 +0 days 🔍
02/22/2016 +0 days 🔍
02/23/2016 +0 days 🔍
02/23/2016 +0 days 🔍
02/26/2016 +2 days 🔍
04/11/2016 +44 days 🔍
04/13/2016 +2 days 🔍
04/27/2016 +14 days 🔍
07/08/2022 +2263 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: USN-2948-2
Researcher: Hannes Frederic Sowa
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-2550 (🔍)
OVAL: 🔍

X-Force: 110990 - Linux Kernel in-flight fds denial of service
Vulnerability Center: 56725 - Linux Kernel before 4.4.1 Local DoS in Unix Domain Socket Related to in-flight fds, Medium
SecurityFocus: 83355 - Linux Kernel 'unix/af_unix.c' Denial of Service Vulnerability

Misc.: 🔍
See also: 🔍

Entryinfo

Created: 02/26/2016 09:45
Updated: 07/08/2022 14:31
Changes: 02/26/2016 09:45 (79), 08/23/2018 08:23 (14), 07/08/2022 14:30 (4), 07/08/2022 14:31 (1)
Complete: 🔍

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