Linux Kernel GS Segment Register access control

CVSS Meta Temp Score
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7.5$0-$5k0.00

A vulnerability was found in Linux Kernel (Operating System) (version now known) and classified as critical. This issue affects some unknown processing of the component GS Segment Register Handler. The manipulation with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-264. Impacted is confidentiality, integrity, and availability.

The weakness was shared 12/15/2014 by Andy Lutomirski (oss-sec). It is possible to read the advisory at openwall.com. The identification of this vulnerability is CVE-2014-9322 since 12/07/2014. The exploitation is known to be easy. Attacking locally is a requirement. No form of authentication is needed for a successful exploitation. Technical details are unknown but a public exploit is available. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

A public exploit has been developed by Emeric Nasi in ANSI C and been published 3 months after the advisory. The exploit is available at securityfocus.com. It is declared as proof-of-concept. We expect the 0-day to have been worth approximately $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 80100 (Scientific Linux Security Update : kernel on SL5.x i386/x86_64), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Scientific Linux Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 167410 (SUSE Enterprise Linux Security update for Linux kernel (SUSE-SU-2014:1698-1)).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.kernel.org.

The vulnerability is also documented in the databases at X-Force (99344), Tenable (80100) and Exploit-DB (36266). seclists.org is providing further details. The entries 68280, 68439, 68573 and 68574 are related to this item.

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CPE 2.3info

CPE 2.2info

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CVSSv3info

VulDB Meta Base Score: 8.1
VulDB Meta Temp Score: 7.5

VulDB Base Score: 8.4
VulDB Temp Score: 7.3
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NVD Base Score: 7.8
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CVSSv2info

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Exploitinginfo

Class: Access control
CWE: CWE-264
ATT&CK: T1068

Local: Yes
Remote: No

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: Emeric Nasi
Programming Language: 🔍
Download: 🔍

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Nessus ID: 80100
Nessus Name: Scientific Linux Security Update : kernel on SL5.x i386/x86_64
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 14611
OpenVAS Name: Amazon Linux Local Check: ALAS-2014-455
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
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Exploit-DB: 🔍

Threat Intelligenceinfo

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Countermeasuresinfo

Recommended: Patch
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0-Day Time: 🔍
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Patch: 6f442be2fb22be02cafa606f1769fa1e6f894441

Timelineinfo

12/07/2014 🔍
12/15/2014 +8 days 🔍
12/15/2014 +0 days 🔍
12/17/2014 +2 days 🔍
12/17/2014 +0 days 🔍
12/18/2014 +1 days 🔍
12/18/2014 +0 days 🔍
12/27/2014 +9 days 🔍
01/14/2015 +18 days 🔍
03/04/2015 +49 days 🔍
03/04/2015 +0 days 🔍
03/01/2022 +2554 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: USN-2491-1
Researcher: Andy Lutomirski
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2014-9322 (🔍)
OVAL: 🔍

X-Force: 99344 - Linux Kernel GS segment register base switching privilege escalation, High Risk
Vulnerability Center: 47686 - Linux Kernel Before 3.17.5 Local Host Privilege due to an Error in the Stack Segment Register, Medium
SecurityFocus: 71685 - Linux Kernel CVE-2014-9322 Local Privilege Escalation Vulnerability
Secunia: 62336 - Ubuntu update for kernel, Less Critical
OSVDB: 115919

scip Labs: https://www.scip.ch/en/?labs.20161013
Misc.: 🔍
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Entryinfo

Created: 12/27/2014 18:46
Updated: 03/01/2022 14:29
Changes: 12/27/2014 18:46 (76), 06/16/2017 04:09 (17), 03/01/2022 14:26 (5), 03/01/2022 14:27 (12), 03/01/2022 14:29 (1)
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