Linux Kernel denial of service

CVSS Meta Temp Score
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CTI Interest Score
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5.7$0-$5k0.00

A vulnerability, which was classified as problematic, was found in Linux Kernel (Operating System) (affected version unknown). Affected is an unknown functionality. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability. CVE summarizes:

Xen in the Linux kernel, when running a guest on a host without hardware assisted paging (HAP), allows guest users to cause a denial of service (invalid pointer dereference and hypervisor crash) via the SAHF instruction.

The weakness was disclosed 12/26/2013 by Eugene Teo (Website). The advisory is shared for download at xenbits.xen.org. This vulnerability is traded as CVE-2011-2519. The attack can only be done within the local network. The successful exploitation needs a authentication. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 56271 (CentOS 5 : kernel (CESA-2011:1212)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CentOS Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 119657 (CentOS Security Update for Kernel (CESA-2011:1212)).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at X-Force (69511), Tenable (56271), SecurityFocus (BID 49375†) and Vulnerability Center (SBV-33454†). The entries VDB-60956, VDB-60827 and VDB-65140 are pretty similar. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.7
VulDB Meta Temp Score: 5.7

VulDB Base Score: 5.7
VulDB Temp Score: 5.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 56271
Nessus Name: CentOS 5 : kernel (CESA-2011:1212)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 880995
OpenVAS Name: CentOS Update for kernel CESA-2011:1212 centos5 i386
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

06/15/2011 🔍
08/30/2011 +76 days 🔍
08/30/2011 +0 days 🔍
10/05/2011 +36 days 🔍
12/26/2013 +813 days 🔍
12/26/2013 +0 days 🔍
03/24/2015 +453 days 🔍
01/18/2022 +2492 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: RHSA-2011:1212
Researcher: Eugene Teo
Status: Not defined
Confirmation: 🔍

CVE: CVE-2011-2519 (🔍)
GCVE (CVE): GCVE-0-2011-2519
GCVE (VulDB): GCVE-100-65892

OVAL: 🔍
IAVM: 🔍

X-Force: 69511
SecurityFocus: 49375 - Xen SAHF Emulation Denial of Service Vulnerability
Vulnerability Center: 33454 - Xen SAHF Emulation Local Denial of Service Vulnerability, Low

See also: 🔍

Entryinfo

Created: 03/24/2015 03:54 PM
Updated: 01/18/2022 10:10 AM
Changes: 03/24/2015 03:54 PM (59), 04/03/2017 05:44 PM (12), 01/18/2022 10:05 AM (5), 01/18/2022 10:10 AM (1)
Complete: 🔍
Cache ID: 18:FE2:40

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