Linux Kernel CXGB3 Kernel Driver use after free

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
9.1	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Linux Kernel. It has been classified as problematic. Affected is an unknown function of the component CXGB3 Kernel Driver. The manipulation leads to use after free. This vulnerability is documented as CVE-2015-8812. The attack can be initiated remotely. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Linux Kernel (Operating System) (unknown version). It has been rated as critical. This issue affects an unknown code block of the component CXGB3 Kernel Driver. The manipulation with an unknown input leads to a use after free vulnerability. Using CWE to declare the problem leads to CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

drivers/infiniband/hw/cxgb3/iwch_cm.c in the Linux kernel before 4.5 does not properly identify error conditions, which allows remote attackers to execute arbitrary code or cause a denial of service (use-after-free) via crafted packets.

The weakness was released 02/11/2016 with Red Hat as Bug 1303532 as confirmed bug report (Bugzilla). The advisory is shared at bugzilla.redhat.com. The identification of this vulnerability is CVE-2015-8812 since 02/11/2016. 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 89040 (Debian DLA-439-1 : linux-2.6 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. The commercial vulnerability scanner Qualys is able to test this issue with plugin 196465 (Ubuntu Security Notification for Linux Vulnerabilities (USN-2967-1)).

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

The vulnerability is also documented in the databases at X-Force (110574), Tenable (89040), SecurityFocus (BID 83218†) and Vulnerability Center (SBV-57973†). seclists.org is providing further details. Entries connected to this vulnerability are available at VDB-78542, VDB-80805, VDB-81295 and VDB-82949. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Operating System

Vendor

Linux

Name

Kernel

License

open-source

Website

Vendor: https://www.kernel.org/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 9.1

VulDB Base Score: 9.8
VulDB Temp Score: 8.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
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Nessus ID: 89040
Nessus Name: Debian DLA-439-1 : linux-2.6 security update
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: 🔍

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

Patch: git.kernel.org

Timelineinfo

02/11/2016 🔍
02/11/2016 +0 days 🔍
02/11/2016 +0 days 🔍
02/16/2016 +5 days 🔍
02/29/2016 +13 days 🔍
03/01/2016 +1 days 🔍
04/06/2016 +36 days 🔍
04/07/2016 +1 days 🔍
04/27/2016 +20 days 🔍
07/08/2022 +2263 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: Bug 1303532
Organization: Red Hat
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-8812 (🔍)
GCVE (CVE): GCVE-0-2015-8812
GCVE (VulDB): GCVE-100-80981

OVAL: 🔍

X-Force: 110574 - Linux Kernel CXGB3 kernel driver privilege escalation
SecurityFocus: 83218 - Linux Kernel CVE-2015-8812 Local Privilege Escalation Vulnerability
Vulnerability Center: 57973 - Linux Kernel before 4.3.6 Remote Privilege Escalation Vulnerability - CVE-2015-8812, Critical

Misc.: 🔍
See also: 🔍

Entryinfo

Created: 02/16/2016 10:02
Updated: 07/08/2022 08:13
Changes: 02/16/2016 10:02 (64), 02/03/2019 10:55 (20), 07/08/2022 08:11 (3), 07/08/2022 08:13 (10)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.