Linux Foundation Xen up to 4.3.1 Function Privileged arch/x86/physdev.c do_physdev_op access control

CVSS Meta Temp Score
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CTI Interest Score
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8.4$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in Linux Foundation Xen up to 4.3.1. Affected by this vulnerability is the function do_physdev_op of the file arch/x86/physdev.c of the component Function Privileged Handler. The manipulation results in access control. This vulnerability was named CVE-2014-1666. There is no available exploit. It is best practice to apply a patch to resolve this issue.

Detailsinfo

A vulnerability classified as critical has been found in Linux Foundation Xen up to 4.3.1 (Virtualization Software). Affected is the function do_physdev_op of the file arch/x86/physdev.c of the component Function Privileged Handler. The manipulation with an unknown input leads to a access control vulnerability. CWE is classifying the issue as CWE-264. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

The do_physdev_op function in Xen 4.1.5, 4.1.6.1, 4.2.2 through 4.2.3, and 4.3.x does not properly restrict access to the (1) PHYSDEVOP_prepare_msix and (2) PHYSDEVOP_release_msix operations, which allows local PV guests to cause a denial of service (host or guest malfunction) or possibly gain privileges via unspecified vectors.

The weakness was presented 01/24/2014 as PHYSDEVOP_{prepare,release}_msix exposed to unprivileged guests as not defined mailinglist post (oss-sec). The advisory is available at seclists.org. This vulnerability is traded as CVE-2014-1666 since 01/24/2014. The exploitability is told to be easy. The attack needs to be done within the local network. The exploitation doesn't require any form of authentication. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1068 by the MITRE ATT&CK project.

The vulnerability scanner Nessus provides a plugin with the ID 79745 (Citrix XenServer Multiple Vulnerabilities (CTX200288)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Misc.. The commercial vulnerability scanner Qualys is able to test this issue with plugin 370031 (Citrix XenServer Security Update (CTX200288)).

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 X-Force (90675), Tenable (79745), SecurityFocus (BID 65125†), OSVDB (102536†) and Secunia (SA56650†). See VDB-68222, VDB-68296 and VDB-68297 for similar entries. VulDB is the best source for vulnerability data and more expert information about this specific topic.

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.8
VulDB Meta Temp Score: 8.4

VulDB Base Score: 8.8
VulDB Temp Score: 8.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Access control
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 79745
Nessus Name: Citrix XenServer Multiple Vulnerabilities (CTX200288)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 867263
OpenVAS Name: Fedora Update for xen FEDORA-2014-1559
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Patch
Status: 🔍

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

Timelineinfo

01/24/2014 🔍
01/24/2014 +0 days 🔍
01/24/2014 +0 days 🔍
01/24/2014 +0 days 🔍
01/24/2014 +0 days 🔍
01/24/2014 +0 days 🔍
01/26/2014 +2 days 🔍
01/28/2014 +2 days 🔍
02/10/2014 +13 days 🔍
12/05/2014 +298 days 🔍
06/08/2021 +2377 days 🔍

Sourcesinfo

Vendor: linuxfoundation.org

Advisory: PHYSDEVOP_{prepare,release}_msix exposed to unprivileged guests
Status: Not defined
Confirmation: 🔍

CVE: CVE-2014-1666 (🔍)
GCVE (CVE): GCVE-0-2014-1666
GCVE (VulDB): GCVE-100-12078

OVAL: 🔍

X-Force: 90675
SecurityFocus: 65125 - Xen 'PHYSDEVOP_{prepare,release}_msix' Operations Local Privilege Escalation Vulnerability
Secunia: 56650 - Xen "PHYSDEVOP_{prepare,release}_msix" Operations Security Bypass Security Issue, Not Critical
OSVDB: 102536
SecurityTracker: 1029684
Vulnerability Center: 43192 - Xen 4.1, 4.2, 4.3 Remote Security Bypass and DoS Vulnerability in Physdev, High

See also: 🔍

Entryinfo

Created: 01/28/2014 10:13
Updated: 06/08/2021 17:38
Changes: 01/28/2014 10:13 (75), 05/20/2017 10:31 (10), 06/08/2021 17:31 (3), 06/08/2021 17:38 (1)
Complete: 🔍
Committer: olku
Cache ID: 216:814:103

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