Linux Foundation Xen up to 4.4.0 Rate Limit Log Entries denial of service

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

Summaryinfo

A vulnerability classified as problematic was found in Linux Foundation Xen up to 4.4.0. This issue affects some unknown processing of the component Rate Limit Handler. Executing a manipulation as part of Log Entries can lead to denial of service. This vulnerability appears as CVE-2014-3968. There is no available exploit. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability has been found in Linux Foundation Xen up to 4.4.0 (Virtualization Software) and classified as problematic. This vulnerability affects an unknown function of the component Rate Limit Handler. The manipulation as part of a Log Entries leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. As an impact it is known to affect availability. CVE summarizes:

The HVMOP_inject_msi function in Xen 4.2.x, 4.3.x, and 4.4.x allows local guest HVM administrators to cause a denial of service (host crash) via a large number of crafted requests, which trigger an error messages to be logged.

The weakness was presented 06/04/2014 by Jan Beulich with SuSE as XSA-96 as confirmed advisory (Website). The advisory is shared for download at xenbits.xenproject.org. The public release was coordinated in cooperation with the vendor. This vulnerability was named CVE-2014-3968 since 06/04/2014. The exploitation appears to be easy. The attack needs to be approached locally. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 78117 (openSUSE Security Update : xen (openSUSE-SU-2014:1281-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE 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 xsa96.patch is able to eliminate this problem. The bugfix is ready for download at xenbits.xenproject.org. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (93607), Tenable (78117), SecurityFocus (BID 67824†), OSVDB (107703†) and Vulnerability Center (SBV-44763†). See VDB-12695, VDB-13087, VDB-13151 and VDB-13429 for similar entries. Once again VulDB remains the best source for vulnerability data.

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CVSSv4info

VulDB Vector: 🔍
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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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Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
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Price Prediction: 🔍
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Nessus ID: 78117
Nessus Name: openSUSE Security Update : xen (openSUSE-SU-2014:1281-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 801150
OpenVAS Name: Fedora Update for xen FEDORA-2014-15503
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: xsa96.patch

Timelineinfo

06/03/2014 🔍
06/03/2014 +0 days 🔍
06/04/2014 +1 days 🔍
06/04/2014 +0 days 🔍
06/04/2014 +0 days 🔍
06/05/2014 +1 days 🔍
06/05/2014 +0 days 🔍
06/08/2014 +3 days 🔍
10/10/2014 +124 days 🔍
06/20/2021 +2445 days 🔍

Sourcesinfo

Vendor: linuxfoundation.org

Advisory: XSA-96
Researcher: Jan Beulich
Organization: SuSE
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2014-3968 (🔍)
GCVE (CVE): GCVE-0-2014-3968
GCVE (VulDB): GCVE-100-13468

OVAL: 🔍

X-Force: 93607 - Xen rate limiting denial of service, Low Risk
SecurityFocus: 67824 - Xen CVE-2014-3968 Denial of Service Vulnerability
OSVDB: 107703
SecurityTracker: 1030322
Vulnerability Center: 44763 - XenProject Xen 4.2 through 4.4 Remote DoS due to Improper Check of Logging Messages in the HVM Control Operation, Medium

See also: 🔍

Entryinfo

Created: 06/08/2014 18:59
Updated: 06/20/2021 17:41
Changes: 06/08/2014 18:59 (71), 06/26/2018 08:42 (19), 06/20/2021 17:41 (3)
Complete: 🔍
Cache ID: 216::103

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