Linux Foundation Xen up to 4.4.0 on 64-bit /hvm/hvm.c HVMOP_set_mem_access input validation

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2.9$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in Linux Foundation Xen up to 4.4.0 on 64-bit. Affected by this issue is the function HVMOP_set_mem_access of the file /hvm/hvm.c. The manipulation leads to input validation. This vulnerability is referenced as CVE-2014-2599. No exploit is available. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability was found in Linux Foundation Xen up to 4.4.0 on 64-bit (Virtualization Software) and classified as problematic. This issue affects the function HVMOP_set_mem_access of the file /hvm/hvm.c. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is availability. The summary by CVE is:

The HVMOP_set_mem_access HVM control operations in Xen 4.1.x for 32-bit and 4.1.x through 4.4.x for 64-bit allow local guest administrators to cause a denial of service (CPU consumption) by leveraging access to certain service domains for HVM guests and a large input.

The weakness was published 03/25/2014 by Jan Beulich with SuSE (Website). It is possible to read the advisory at openwall.com. The identification of this vulnerability is CVE-2014-2599 since 03/24/2014. The exploitation is known to be easy. Attacking locally is a requirement. A simple authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 73362 (Fedora 20 : xen-4.3.2-2.fc20 (2014-4458)), 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 123186 (Fedora Security Update for xen (FEDORA-2015-0331)).

Applying the patch xsa89.patch/xsa89-4.1.patch is able to eliminate this problem. A possible mitigation has been published 3 days after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (92101), Tenable (73362), SecurityFocus (BID 66407†), SecurityTracker (ID 1029956†) and Vulnerability Center (SBV-43886†). Similar entries are available at VDB-13087, VDB-13151, VDB-13429 and VDB-13468. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.3
VulDB Meta Temp Score: 2.9

VulDB Base Score: 3.3
VulDB Temp Score: 2.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 73362
Nessus Name: Fedora 20 : xen-4.3.2-2.fc20 (2014-4458)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 867665
OpenVAS Name: Fedora Update for xen FEDORA-2014-4424
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
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Patch: xsa89.patch/xsa89-4.1.patch

Timelineinfo

03/24/2014 🔍
03/25/2014 +1 days 🔍
03/25/2014 +0 days 🔍
03/25/2014 +0 days 🔍
03/27/2014 +2 days 🔍
03/28/2014 +1 days 🔍
03/28/2014 +0 days 🔍
04/03/2014 +6 days 🔍
04/07/2014 +4 days 🔍
06/26/2018 +1541 days 🔍

Sourcesinfo

Vendor: linuxfoundation.org

Advisory: openwall.com
Researcher: Jan Beulich
Organization: SuSE
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2014-2599 (🔍)
GCVE (CVE): GCVE-0-2014-2599
GCVE (VulDB): GCVE-100-12695

OVAL: 🔍

X-Force: 92101 - Xen HVMOP_set_mem_access denial of service, Low Risk
SecurityFocus: 66407 - Xen '/hvm/hvm.c' Remote Denial of Service Vulnerability
SecurityTracker: 1029956
Vulnerability Center: 43886 - Xen 4.1 - 4.4 Local DoS in HVMOP_set_mem_access HVM Control, Medium

See also: 🔍

Entryinfo

Created: 03/27/2014 11:07
Updated: 06/26/2018 08:40
Changes: 03/27/2014 11:07 (77), 06/26/2018 08:40 (12)
Complete: 🔍
Cache ID: 216:9DC:103

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