Linux Foundation Xen up to 4.3.1 numeric error

CVSS Meta Temp Score
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CTI Interest Score
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3.5$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in Linux Foundation Xen. The affected element is an unknown function. The manipulation results in numeric error. This vulnerability is cataloged as CVE-2014-1891. There is no exploit available. It is best practice to apply a patch to resolve this issue.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Linux Foundation Xen (Virtualization Software). Affected is an unknown part. The manipulation with an unknown input leads to a numeric error vulnerability. CWE is classifying the issue as CWE-189. This is going to have an impact on availability. CVE summarizes:

Multiple integer overflows in the (1) FLASK_GETBOOL, (2) FLASK_SETBOOL, (3) FLASK_USER, and (4) FLASK_CONTEXT_TO_SID suboperations in the flask hypercall in Xen 4.3.x, 4.2.x, 4.1.x, 3.2.x, and earlier, when XSM is enabled, allow local users to cause a denial of service (processor fault) via unspecified vectors, a different vulnerability than CVE-2014-1892, CVE-2014-1893, and CVE-2014-1894.

The weakness was shared 02/10/2014 by Matthew Daley as [Xen-announce] Xen Security Advisory 84 as confirmed advisory (Website). The advisory is available at lists.xen.org. This vulnerability is traded as CVE-2014-1891 since 02/07/2014. The exploitability is told to be easy. Local access is required to approach this attack. The exploitation doesn't require any form of authentication. The technical details are unknown and an exploit is not available.

The vulnerability scanner Nessus provides a plugin with the ID 72539 (Fedora 20 : xen-4.3.1-9.fc20 (2014-2170)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 166935 (OpenSuSE Security Update for xen (openSUSE-SU-2014:0483-1)).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at lists.xen.org.

The vulnerability is also documented in the databases at X-Force (91309), Tenable (72539), SecurityFocus (BID 65419†) and Vulnerability Center (SBV-43666†). The entries VDB-11164, VDB-12064, VDB-12235 and VDB-12236 are related to this item. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.0
VulDB Meta Temp Score: 3.5

VulDB Base Score: 4.0
VulDB Temp Score: 3.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Numeric error
CWE: CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 72539
Nessus Name: Fedora 20 : xen-4.3.1-9.fc20 (2014-2170)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 867511
OpenVAS Name: Fedora Update for xen FEDORA-2014-2170
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: lists.xen.org

Timelineinfo

02/06/2014 🔍
02/06/2014 +0 days 🔍
02/07/2014 +1 days 🔍
02/10/2014 +3 days 🔍
02/17/2014 +7 days 🔍
02/26/2014 +9 days 🔍
03/19/2014 +21 days 🔍
04/01/2014 +13 days 🔍
06/09/2021 +2626 days 🔍

Sourcesinfo

Vendor: linuxfoundation.org

Advisory: [Xen-announce] Xen Security Advisory 84
Researcher: Matthew Daley
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2014-1891 (🔍)
GCVE (CVE): GCVE-0-2014-1891
GCVE (VulDB): GCVE-100-12414

OVAL: 🔍

X-Force: 91309 - Xen FLASK_GETBOOL denial of service, Medium Risk
SecurityFocus: 65419 - Xen XSM/Flask Hypercalls Local Integer Overflow Vulnerability
Vulnerability Center: 43666 - Xen 3.2 - 4.3 Local DoS Vulnerability due to Integer Overflow in Flask Hypercalls, Low

See also: 🔍

Entryinfo

Created: 02/26/2014 13:53
Updated: 06/09/2021 21:02
Changes: 02/26/2014 13:53 (77), 05/23/2017 08:51 (4), 06/09/2021 21:02 (3)
Complete: 🔍
Committer:
Cache ID: 216:67D:103

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