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.
6.2	$0-$5k	0.00

A vulnerability was found in Linux Kernel 3.12.5 (Operating System). It has been classified as critical. Affected is the function apic_get_tmcct of the file kvm/lapic.c. The manipulation of the argument lapic_timer.period with an unknown input leads to a numeric error vulnerability. CWE is classifying the issue as CWE-189. This is going to have an impact on availability. CVE summarizes:

The apic_get_tmcct function in arch/x86/kvm/lapic.c in the KVM subsystem in the Linux kernel through 3.12.5 allows guest OS users to cause a denial of service (divide-by-zero error and host OS crash) via crafted modifications of the TMICT value.

The weakness was presented 12/12/2013 by Andrew Honig as RHSA-2013-1802 as not defined advisory (Red Hat Security Advisory). The advisory is shared for download at rhn.redhat.com. This vulnerability is traded as CVE-2013-6367 since 11/04/2013. The attack needs to approached within the local network. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 72473 (RHEL 5 : kvm (RHSA-2014:0163)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Red Hat Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 123695 (Red Hat Update for kernel (RHSA-2014:0284)).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (72473). See 11235 for similar entry.

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 3.12.5

License

• open-source

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.2

VulDB Base Score: 6.5
VulDB Temp Score: 6.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Numeric error
CWE: CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Nessus ID: 72473
Nessus Name: RHEL 5 : kvm (RHSA-2014:0163)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 881832
OpenVAS Name: CentOS Update for kernel CESA-2013:1801 centos6
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

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

Patch: github.com

Timelineinfo

11/04/2013 🔍
12/12/2013 +38 days 🔍
12/12/2013 +0 days 🔍
12/12/2013 +0 days 🔍
12/14/2013 +2 days 🔍
12/16/2013 +2 days 🔍
12/16/2013 +0 days 🔍
02/13/2014 +59 days 🔍
06/04/2021 +2668 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: RHSA-2013-1802
Researcher: Andrew Honig
Status: Not defined
Confirmation: 🔍

CVE: CVE-2013-6367 (🔍)
OVAL: 🔍

Vulnerability Center: 42580 - Linux Kernel <=3.12.5 Remote Denial of Service due to a Divide-By-Zero Error in the 'Apic_Get_Tmcct()\x27 Function, Medium
SecurityFocus: 64270
OSVDB: 100985

See also: 🔍

Entryinfo

Created: 12/16/2013 11:17
Updated: 06/04/2021 11:10
Changes: 12/16/2013 11:17 (78), 05/17/2017 09:08 (2), 06/04/2021 11:10 (3)
Complete: 🔍
Committer: olku

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