Linux Foundation Xen up to 4.1.6.1 Flask Hypercall FLASK_GETBOOL/FLASK_SETBOOL numeric error

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3.5$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in Linux Foundation Xen. This affects the function FLASK_GETBOOL/FLASK_SETBOOL of the component Flask Hypercall. Such manipulation leads to numeric error. This vulnerability is documented as CVE-2014-1893. There is not any exploit available. Applying a patch is advised to resolve this issue.

Detailsinfo

A vulnerability was found in Linux Foundation Xen (Virtualization Software) and classified as problematic. Affected by this issue is the function FLASK_GETBOOL/FLASK_SETBOOL of the component Flask Hypercall. The manipulation with an unknown input leads to a numeric error vulnerability. Using CWE to declare the problem leads to CWE-189. Impacted is availability. CVE summarizes:

Multiple integer overflows in the (1) FLASK_GETBOOL and (2) FLASK_SETBOOL suboperations in the flask hypercall in Xen 4.1.x, 3.3.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-2014-1891, CVE-2014-1892, and CVE-2014-1894.

The weakness was released 02/10/2014 by Matthew Daley as XSA-84 as confirmed mailinglist post (Mailing List). The advisory is shared for download at xenbits.xenproject.org. This vulnerability is handled as CVE-2014-1893 since 02/07/2014. The exploitation is known to be easy. The attack needs to be approached locally. No form of authentication is required for exploitation. There are known technical details, but no exploit is 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 the patch xsa84-4.1.patch/xsa84-4.2.patch/xsa84-unstable-4.3.patch is able to eliminate this problem.

The vulnerability is also documented in the databases at X-Force (91311), Tenable (72539), SecurityFocus (BID 65419†) and Vulnerability Center (SBV-43677†). Entries connected to this vulnerability are available at VDB-11164, VDB-12064, VDB-12235 and VDB-12236. 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: 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: 🔍
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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: 🔍

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

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: xsa84-4.1.patch/xsa84-4.2.patch/xsa84-unstable-4.3.patch

Timelineinfo

02/06/2014 🔍
02/06/2014 +0 days 🔍
02/07/2014 +1 days 🔍
02/10/2014 +3 days 🔍
02/27/2014 +17 days 🔍
03/19/2014 +20 days 🔍
04/01/2014 +13 days 🔍
06/09/2021 +2626 days 🔍

Sourcesinfo

Vendor: linuxfoundation.org

Advisory: XSA-84
Researcher: Matthew Daley
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2014-1893 (🔍)
GCVE (CVE): GCVE-0-2014-1893
GCVE (VulDB): GCVE-100-12416

OVAL: 🔍

X-Force: 91311 - Xen FLASK_GETBOOL denial of service, Medium Risk
SecurityFocus: 65419 - Xen XSM/Flask Hypercalls Local Integer Overflow Vulnerability
Vulnerability Center: 43677 - Xen 3.3 - 4.1 Local DoS Vulnerability due to Integer Overflow in Flask Hypercalls, Low

See also: 🔍

Entryinfo

Created: 02/27/2014 08:26
Updated: 06/09/2021 21:20
Changes: 02/27/2014 08:26 (76), 05/23/2017 08:54 (4), 06/09/2021 21:20 (3)
Complete: 🔍
Committer: olku
Cache ID: 216:9E7:103

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