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.
4.6	$0-$5k	0.00

A vulnerability was found in Linux Kernel (Operating System). It has been rated as problematic. This issue affects an unknown part of the component KVM syscall Instruction. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is availability. The summary by CVE is:

The em_syscall function in arch/x86/kvm/emulate.c in the KVM implementation in the Linux kernel before 3.2.14 does not properly handle the 0f05 (aka syscall) opcode, which allows guest OS users to cause a denial of service (guest OS crash) via a crafted application, as demonstrated by an NASM file.

The weakness was presented 01/12/2012 as confirmed mailinglist post (Website). The advisory is shared at lkml.org. The identification of this vulnerability is CVE-2012-0045 since 12/07/2011. The exploitation is known to be difficult. An attack has to be approached locally. No form of authentication is needed for a successful exploitation. Technical details are unknown but a public exploit is available.

The exploit is available at lkml.org. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 79285 (RHEL 6 : rhev-hypervisor6 (RHSA-2012:0422)), 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 350692 (Amazon Linux Security Advisory for kernel: ALAS-2012-055).

Upgrading to version 3.2.14 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published 3 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (72348) and Tenable (79285). See 4434, 4488, 4536 and 4523 for similar entries.

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 0.3
• 0.3.1
• 0.3.2
• 0.3.3
• 0.9.7
• 0.99.7
• 0.99.7.1
• 0.698
• 0.699
• 1.2
• 1.3
• 1.6
• 1.6.1
• 1.6.2
• 1.6.3
• 1.6.4
• 1.6.5
• 1.6.6
• 1.6.7
• 1.6.8
• 1.6.9
• 2.0
• 2.0.1
• 2.0.3
• 2.0.18
• 2.0.33
• 2.0.34
• 2.0.35
• 2.0.36
• 2.0.37
• 2.0.38
• 2.0.39
• 2.1
• 2.1.89
• 2.1.132
• 2.2
• 2.2.1
• 2.2.2
• 2.2.3
• 2.2.4
• 2.2.5
• 2.2.6
• 2.2.7
• 2.2.8
• 2.2.9
• 2.2.11
• 2.2.12
• 2.2.13
• 2.2.14
• 2.2.15
• 2.2.15 Pre2
• 2.2.16
• 2.2.17
• 2.2.18
• 2.2.19
• 2.2.21
• 2.2.22
• 2.2.23
• 2.2.27
• 2.3
• 2.3.1
• 2.3.18
• 2.3.99
• 2.4
• 2.4.1
• 2.4.2
• 2.4.3
• 2.4.4
• 2.4.5
• 2.4.6
• 2.4.7
• 2.4.8
• 2.4.9
• 2.4.11
• 2.4.11pre3
• 2.4.12
• 2.4.13
• 2.4.14
• 2.4.15
• 2.4.16
• 2.4.17
• 2.4.18
• 2.4.19
• 2.4.21
• 2.4.22
• 2.4.23
• 2.4.23 Ow2
• 2.4.24
• 2.4.24 Ow1
• 2.4.25
• 2.4.26
• 2.4.27
• 2.4.27-rc3
• 2.4.28
• 2.4.29
• 2.4.29-rc1
• 2.4.31
• 2.4.32
• 2.4.32-pre1
• 2.4.33
• 2.4.33.1
• 2.4.33.2
• 2.4.33.3
• 2.4.33.4
• 2.4.33.5
• 2.4.33.6
• 2.4.34
• 2.4.34-pre4 ATM
• 2.4.34.2
• 2.4.35
• 2.4.35.2
• 2.4.36
• 2.4.36-rc1
• 2.4.36.1
• 2.4.36.2
• 2.4.36.3
• 2.4.36.4
• 2.4.36.5
• 2.4.36.6
• 2.5
• 2.5.1
• 2.5.2
• 2.5.3
• 2.5.4
• 2.5.5
• 2.5.6
• 2.5.7
• 2.5.8
• 2.5.9
• 2.5.11
• 2.5.12
• 2.5.13
• 2.5.14
• 2.5.15
• 2.5.16
• 2.5.17
• 2.5.18
• 2.5.19
• 2.5.21
• 2.5.22
• 2.5.23
• 2.5.24
• 2.5.25
• 2.5.26
• 2.5.27
• 2.5.28
• 2.5.29
• 2.5.31
• 2.6
• 2.6 Test9 Cvs
• 2.6.1
• 2.6.2
• 2.6.3
• 2.6.4
• 2.6.5
• 2.6.6
• 2.6.7
• 2.6.7-rc1
• 2.6.7-rc2
• 2.6.8
• 2.6.8.1
• 2.6.8.1.5
• 2.6.9
• 2.6.11
• 2.6.11 Rc1 Bk6
• 2.6.11-rc1
• 2.6.11-rc2
• 2.6.11-rc3
• 2.6.11-RC4
• 2.6.11.1
• 2.6.11.2
• 2.6.11.3
• 2.6.11.4
• 2.6.11.5
• 2.6.11.6
• 2.6.11.7
• 2.6.11.8
• 2.6.11.9
• 2.6.11.11
• 2.6.11.12
• 2.6.12
• 2.6.12-rc1
• 2.6.12.1
• 2.6.12.2
• 2.6.12.3
• 2.6.12.4
• 2.6.12.5
• 2.6.12.6
• 2.6.13
• 2.6.13-rc1
• 2.6.13-rc2
• 2.6.13-rc3
• 2.6.13-rc4
• 2.6.13-rc5
• 2.6.13-rc6
• 2.6.13.1
• 2.6.13.2
• 2.6.13.3
• 2.6.13.4
• 2.6.13.5
• 2.6.14
• 2.6.14-git4
• 2.6.14.1
• 2.6.14.2
• 2.6.14.3
• 2.6.14.4
• 2.6.14.5
• 2.6.14.6
• 2.6.14.7
• 2.6.15
• 2.6.15-rc3
• 2.6.15.1
• 2.6.15.2
• 2.6.15.3
• 2.6.15.4
• 2.6.15.5
• 2.6.15.6
• 2.6.16
• 2.6.16 Rc7
• 2.6.16-rc1
• 2.6.16-rc2
• 2.6.16-rc6
• 2.6.16.1
• 2.6.16.2
• 2.6.16.3
• 2.6.16.4
• 2.6.16.5
• 2.6.16.6
• 2.6.16.7
• 2.6.16.8
• 2.6.16.9
• 2.6.16.11
• 2.6.16.12
• 2.6.16.13
• 2.6.16.14
• 2.6.16.15
• 2.6.16.16
• 2.6.16.17
• 2.6.16.18
• 2.6.16.19
• 2.6.16.21
• 2.6.16.22
• 2.6.16.59
• 2.6.17
• 2.6.17.1
• 2.6.17.2
• 2.6.17.3
• 2.6.17.4
• 2.6.17.5
• 2.6.17.6
• 2.6.17.7
• 2.6.17.8
• 2.6.17.9
• 2.6.17.11
• 2.6.18
• 2.6.18-1.2869
• 2.6.18-348
• 2.6.18.1
• 2.6.18.2
• 2.6.18.3
• 2.6.18.4
• 2.6.18.5
• 2.6.18.6
• 2.6.18.7
• 2.6.19
• 2.6.19-rc1 s39
• 2.6.19.1
• 2.6.19.2
• 2.6.19.3
• 2.6.19.4
• 2.6.19.5
• 2.6.19.6
• 2.6.19.7
• 2.6.20.1
• 2.6.20.2
• 2.6.20.3
• 2.6.20.4
• 2.6.20.5
• 2.6.20.6
• 2.6.20.7
• 2.6.20.8
• 2.6.20.9
• 2.6.20.11
• 2.6.20.12
• 2.6.20.13
• 2.6.20.14
• 2.6.20.15
• 2.6.20.16
• 2.6.20.17
• 2.6.20.18
• 2.6.20.19
• 2.6.20.21
• 2.6.21
• 2.6.21 Rc4
• 2.6.21-git8
• 2.6.21-rc1
• 2.6.21-rc2
• 2.6.21-rc3
• 2.6.21.1
• 2.6.21.2
• 2.6.21.3
• 2.6.21.5
• 2.6.21.6
• 2.6.21.7
• 2.6.22
• 2.6.22.1
• 2.6.22.2
• 2.6.22.3
• 2.6.22.4
• 2.6.22.5
• 2.6.22.6
• 2.6.22.7
• 2.6.22.8
• 2.6.22.9
• 2.6.22.11
• 2.6.22.12
• 2.6.22.13
• 2.6.22.14
• 2.6.22.15
• 2.6.22.16
• 2.6.22.17
• 2.6.22.18
• 2.6.22.19
• 2.6.22.21
• 2.6.23
• 2.6.23.1
• 2.6.23.2
• 2.6.23.3
• 2.6.23.4
• 2.6.23.5
• 2.6.23.6
• 2.6.23.7
• 2.6.23.8
• 2.6.23.9
• 2.6.23.11
• 2.6.23.12
• 2.6.23.14
• 2.6.24
• 2.6.24-rc5
• 2.6.25
• 2.6.25.1
• 2.6.25.2
• 2.6.25.3
• 2.6.25.4
• 2.6.25.5
• 2.6.25.6
• 2.6.25.7
• 2.6.25.8
• 2.6.25.9
• 2.6.25.11
• 2.6.25.12
• 2.6.26
• 2.6.26.2
• 2.6.26.3
• 2.6.26.5
• 2.6.27
• 2.6.27.1
• 2.6.27.2
• 2.6.27.3
• 2.6.27.4
• 2.6.27.5
• 2.6.27.6
• 2.6.27.7
• 2.6.27.8
• 2.6.27.9
• 2.6.27.11
• 2.6.27.12
• 2.6.27.13
• 2.6.27.14
• 2.6.27.15
• 2.6.27.16
• 2.6.27.17
• 2.6.27.18
• 2.6.27.19
• 2.6.27.21
• 2.6.27.22
• 2.6.27.23
• 2.6.27.51
• 2.6.28
• 2.6.28-rc1
• 2.6.28.1
• 2.6.28.2
• 2.6.28.3
• 2.6.28.4
• 2.6.28.5
• 2.6.28.6
• 2.6.28.7
• 2.6.28.8
• 2.6.28.9
• 2.6.29
• 2.6.29.1
• 2.6.29.2
• 2.6.29.3
• 2.6.29.4
• 2.6.29.5
• 2.6.29.6
• 2.6.29.rc1
• 2.6.29.rc2
• 2.6.29.rc2-git1
• 2.6.30.1
• 2.6.30.2
• 2.6.30.3
• 2.6.30.4
• 2.6.30.5
• 2.6.30.6
• 2.6.30.7
• 2.6.30.8
• 2.6.30.9
• 2.6.30.y
• 2.6.31
• 2.6.31-rc1
• 2.6.31-rc2
• 2.6.31-rc3
• 2.6.31-rc4
• 2.6.31-rc5
• 2.6.31-rc6
• 2.6.31-rc7
• 2.6.31-rc8
• 2.6.31-rc9
• 2.6.32
• 2.6.32-45
• 2.6.32-358
• 2.6.32-504.12.2
• 2.6.32.1
• 2.6.32.2
• 2.6.32.3
• 2.6.32.4
• 2.6.32.5
• 2.6.32.6
• 2.6.32.7
• 2.6.32.8
• 2.6.32.9
• 2.6.32.11
• 2.6.32.12
• 2.6.32.13
• 2.6.32.14
• 2.6.32.15
• 2.6.32.16
• 2.6.32.17
• 2.6.32.18
• 2.6.32.51
• 2.6.32.61
• 2.6.32.63
• 2.6.33
• 2.6.33 rc1
• 2.6.33.1
• 2.6.33.2
• 2.6.33.3
• 2.6.33.4
• 2.6.33.5
• 2.6.33.6
• 2.6.33.7
• 2.6.33.8
• 2.6.33.9
• 2.6.33.11
• 2.6.33.12
• 2.6.33.13
• 2.6.33.14
• 2.6.33.15
• 2.6.33.16
• 2.6.33.17
• 2.6.33.18
• 2.6.33.19
• 2.6.34
• 2.6.34.1
• 2.6.34.2
• 2.6.34.3
• 2.6.34.14
• 2.6.35
• 2.6.35.1
• 2.6.35.2
• 2.6.35.3
• 2.6.35.4
• 2.6.35.5
• 2.6.35.6
• 2.6.35.7
• 2.6.35.8
• 2.6.35.9
• 2.6.35.11
• 2.6.35.12
• 2.6.35.13
• 2.6.36
• 2.6.36.1
• 2.6.36.2
• 2.6.36.3
• 2.6.36.4
• 2.6.37
• 2.6.37.1
• 2.6.37.2
• 2.6.37.3
• 2.6.37.4
• 2.6.37.5
• 2.6.37.6
• 2.6.38
• 2.6.38.1
• 2.6.38.2
• 2.6.38.3
• 2.6.38.4
• 2.6.38.5
• 2.6.38.6
• 2.6.38.7
• 2.6.38.8
• 2.6.39
• 2.6.39.1
• 2.6.39.2
• 2.6.39.3
• 2.6_test9_cvs
• 2.7
• 2.8
• 2.9
• 2.10
• 2.11
• 2.12
• 2.12a
• 2.13
• 2.13.1
• 2.13.1.1
• 2.14
• 2.15
• 2.16
• 2.x.6
• 3
• 3.0
• 3.0.1
• 3.0.2
• 3.0.3
• 3.0.4
• 3.0.5
• 3.0.6
• 3.0.7
• 3.0.8
• 3.0.9
• 3.0.11
• 3.0.12
• 3.0.13
• 3.0.14
• 3.0.15
• 3.0.16
• 3.0.17
• 3.0.18
• 3.0.19
• 3.0.21
• 3.0.22
• 3.0.23
• 3.0.24
• 3.0.25
• 3.0.26
• 3.0.27
• 3.0.28
• 3.0.29
• 3.0.31
• 3.0.32
• 3.0.33
• 3.0.34
• 3.0.36
• 3.0.37
• 3.0.62
• 3.0.63
• 3.0.75
• 3.0.94
• 3.1
• 3.1.1
• 3.1.2
• 3.1.3
• 3.1.4
• 3.1.5
• 3.1.6
• 3.1.7
• 3.1.8
• 3.1.9
• 3.2
• 3.2.1
• 3.2.2
• 3.2.3
• 3.2.4
• 3.2.5
• 3.2.6
• 3.2.7
• 3.2.8
• 3.2.9
• 3.2.11
• 3.2.12
• 3.2.13

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: 5.1
VulDB Meta Temp Score: 4.6

VulDB Base Score: 5.1
VulDB Temp Score: 4.6
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: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Local: Yes
Remote: No

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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

Nessus ID: 79285
Nessus Name: RHEL 6 : rhev-hypervisor6 (RHSA-2012:0422)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 892443
OpenVAS Name: Debian Security Advisory DSA 2443-1 (linux-2.6 - privilege escalation/denial of service
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: 🔍

Upgrade: Kernel 3.2.14
Patch: git.kernel.org

Timelineinfo

12/07/2011 🔍
12/29/2011 +22 days 🔍
01/09/2012 +11 days 🔍
01/12/2012 +3 days 🔍
01/12/2012 +0 days 🔍
01/12/2012 +0 days 🔍
01/21/2012 +8 days 🔍
04/02/2012 +72 days 🔍
04/03/2012 +1 days 🔍
07/03/2012 +91 days 🔍
11/17/2014 +867 days 🔍
03/20/2021 +2315 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: lkml.org
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2012-0045 (🔍)
OVAL: 🔍

X-Force: 72348
SecurityTracker: 1026516 - Linux Kernel KVM Bug Lets Local Guest Users Deny Service on the Guest Operating System
Vulnerability Center: 34789 - Linux Kernel Syscall Opcode Handling Failure Allows Local DoS via a Specially Crafted Binary File, Medium
SecurityFocus: 51343 - Linux Kernel 'net/ipv4/igmp.c' Remote Denial of Service Vulnerability
Secunia: 47482 - Linux Kernel KVM "syscall" Emulation and CIFS Special Files Lookup Denial of Ser, Not Critical
OSVDB: 78264

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 01/21/2012 01:00
Updated: 03/20/2021 14:33
Changes: 01/21/2012 01:00 (81), 04/10/2017 18:01 (11), 03/20/2021 14:33 (3)
Complete: 🔍

Discussion

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