Xen up to 4.9.x Grant Copy access control

CVSS Meta Temp Score
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CTI Interest Score
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7.0$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic was found in Xen 4.5.x/4.6.x/4.7.x/4.8.x/4.9.x. Affected by this issue is some unknown functionality of the component Grant Copy Handler. Such manipulation leads to access control. This vulnerability is documented as CVE-2017-15597. The attack needs to be performed locally. There is not any exploit available. A patch should be applied to remediate this issue.

Detailsinfo

A vulnerability was found in Xen 4.5.x/4.6.x/4.7.x/4.8.x/4.9.x (Virtualization Software) and classified as problematic. Affected by this issue is an unknown function of the component Grant Copy 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 availability.

The bug was discovered 10/24/2017. The weakness was released 10/24/2017 with Amazon as XSA-236 as confirmed security advisory (Website). The advisory is available at xenbits.xen.org. This vulnerability is handled as CVE-2017-15597 since 10/18/2017. Local access is required to approach this attack. The successful exploitation requires a simple authentication. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1068 by the MITRE ATT&CK project.

The vulnerability scanner Nessus provides a plugin with the ID 104174 (Citrix XenServer Pin Count / Page Reference Grant Table Code Guest-to-Host Memory Corruption Vulnerability (CTX229057)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Misc. and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 390080 (Oracle VM Server for x86 Security Update for xen (OVMSA-2017-0166)).

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 (104174), SecurityFocus (BID 101564†) and SecurityTracker (ID 1039653†). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.2

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.1
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: Access control
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 104174
Nessus Name: Citrix XenServer Pin Count / Page Reference Grant Table Code Guest-to-Host Memory Corruption Vulnerability (CTX229057)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 103302
OpenVAS Name: Citrix XenServer Security Update (CTX229057)
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

10/18/2017 🔍
10/24/2017 +6 days 🔍
10/24/2017 +0 days 🔍
10/24/2017 +0 days 🔍
10/24/2017 +0 days 🔍
10/25/2017 +1 days 🔍
10/26/2017 +1 days 🔍
10/26/2017 +0 days 🔍
10/30/2017 +4 days 🔍
01/20/2021 +1178 days 🔍

Sourcesinfo

Advisory: XSA-236
Researcher: Pawel Wieczorkiewicz
Organization: Amazon
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-15597 (🔍)
GCVE (CVE): GCVE-0-2017-15597
GCVE (VulDB): GCVE-100-108626

OVAL: 🔍

SecurityFocus: 101564 - Xen CVE-2017-15597 Memory Corruption Vulnerability
SecurityTracker: 1039653

Entryinfo

Created: 10/26/2017 09:07
Updated: 01/20/2021 18:02
Changes: 10/26/2017 09:07 (78), 11/30/2019 17:33 (6), 01/20/2021 17:58 (3), 01/20/2021 18:02 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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