Xen up to 4.8.x Hypervisor data processing

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability was found in Xen up to 4.8.x and classified as problematic. The impacted element is an unknown function of the component Hypervisor. The manipulation results in data processing. This vulnerability is cataloged as CVE-2017-10919. The attack may be launched remotely. There is no exploit available. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Xen up to 4.8.x (Virtualization Software). Affected is an unknown code of the component Hypervisor. The manipulation with an unknown input leads to a data processing vulnerability. CWE is classifying the issue as CWE-19. This is going to have an impact on availability. CVE summarizes:

Xen through 4.8.x mishandles virtual interrupt injection, which allows guest OS users to cause a denial of service (hypervisor crash), aka XSA-223.

The bug was discovered 06/20/2017. The weakness was shared 07/05/2017 as XSA-223 as confirmed security advisory (Website). The advisory is shared for download at xenbits.xen.org. This vulnerability is traded as CVE-2017-10919 since 07/04/2017. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 14 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 101638 (Fedora 26 : xen (2017-5c6a9b07a3)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 276751 (Fedora Security Update for xen (FEDORA-2017-c3149b5fcb)).

Applying a patch is able to eliminate this problem. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (101638) and SecurityFocus (BID 99159†). The entries VDB-103037, VDB-103038, VDB-103039 and VDB-103040 are related to this item. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Data processing
CWE: CWE-19
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 101638
Nessus Name: Fedora 26 : xen (2017-5c6a9b07a3)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 867773
OpenVAS Name: Fedora Update for xen FEDORA-2017-c3149b5fcb
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: 🔍

Timelineinfo

06/20/2017 🔍
06/20/2017 +0 days 🔍
07/04/2017 +14 days 🔍
07/04/2017 +0 days 🔍
07/05/2017 +1 days 🔍
07/05/2017 +0 days 🔍
07/05/2017 +0 days 🔍
07/17/2017 +12 days 🔍
12/30/2020 +1262 days 🔍

Sourcesinfo

Advisory: XSA-223
Researcher: Julien Grall
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-10919 (🔍)
GCVE (CVE): GCVE-0-2017-10919
GCVE (VulDB): GCVE-100-103044

OVAL: 🔍

SecurityFocus: 99159 - Xen 'xen/arch/arm/gic.c' Denial of Service Vulnerability
SecurityTracker: 1038733

See also: 🔍

Entryinfo

Created: 07/05/2017 10:31
Updated: 12/30/2020 17:29
Changes: 07/05/2017 10:31 (77), 10/22/2019 10:20 (4), 12/30/2020 17:23 (2), 12/30/2020 17:29 (1)
Complete: 🔍
Cache ID: 216::103

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