Linux Foundation Xen up to 4.3.1 xc_cpupool_getinfo resource management

CVSS Meta Temp Score
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CTI Interest Score
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6.4$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Foundation Xen up to 4.3.1. It has been classified as critical. This affects the function xc_cpupool_getinfo. Performing a manipulation results in resource management. This vulnerability is cataloged as CVE-2014-1950. There is no exploit available. It is best practice to apply the suggested workaround.

Detailsinfo

A vulnerability classified as critical has been found in Linux Foundation Xen up to 4.3.1 (Virtualization Software). This affects the function xc_cpupool_getinfo. The manipulation with an unknown input leads to a resource management vulnerability. CWE is classifying the issue as CWE-399. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Use-after-free vulnerability in the xc_cpupool_getinfo function in Xen 4.1.x through 4.3.x, when using a multithreaded toolstack, does not properly handle a failure by the xc_cpumap_alloc function, which allows local users with access to management functions to cause a denial of service (heap corruption) and possibly gain privileges via unspecified vectors.

The weakness was shared 02/12/2014 with Coverity Scan as Xen Security Advisory 88 as confirmed advisory (oss-sec). It is possible to read the advisory at openwall.com. This vulnerability is uniquely identified as CVE-2014-1950 since 02/12/2014. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of 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 72765 (Fedora 20 : xen-4.3.2-1.fc20 (2014-2802)), 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)).

The best possible mitigation is suggested to be Workaround. The advisory contains the following remark:

Not allowing untrusted users access to toolstack functionality will avoid this issue.

The vulnerability is also documented in the databases at X-Force (91148), Tenable (72765), SecurityFocus (BID 65529†) and Vulnerability Center (SBV-43587†). Further details are available at seclists.org. The entries VDB-11164, VDB-12064, VDB-12235 and VDB-12236 are related to this item. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 6.4

VulDB Base Score: 7.3
VulDB Temp Score: 6.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Resource management
CWE: CWE-399 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 72765
Nessus Name: Fedora 20 : xen-4.3.2-1.fc20 (2014-2802)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 867554
OpenVAS Name: Fedora Update for xen FEDORA-2014-2802
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Workaround
Status: 🔍

0-Day Time: 🔍

Timelineinfo

02/12/2014 🔍
02/12/2014 +0 days 🔍
02/12/2014 +0 days 🔍
02/12/2014 +0 days 🔍
02/14/2014 +2 days 🔍
02/21/2014 +7 days 🔍
03/12/2014 +19 days 🔍
06/09/2021 +2646 days 🔍

Sourcesinfo

Vendor: linuxfoundation.org

Advisory: Xen Security Advisory 88
Organization: Coverity Scan
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2014-1950 (🔍)
GCVE (CVE): GCVE-0-2014-1950
GCVE (VulDB): GCVE-100-12339

OVAL: 🔍

X-Force: 91148 - Xen xc_cpupool_getinfo() code execution, High Risk
SecurityFocus: 65529 - Xen 'xc_cpupool_getinfo()' Function Use After Free Memory Corruption Vulnerability
Vulnerability Center: 43587 - XenProject Xen 4.1.1 through 4.3.1 Allow Local Users to Cause DoS or Gain Privileges due to Improper Failure Handling, Medium

Misc.: 🔍
See also: 🔍

Entryinfo

Created: 02/21/2014 17:01
Updated: 06/09/2021 15:34
Changes: 02/21/2014 17:01 (76), 05/22/2017 17:24 (4), 06/09/2021 15:34 (3)
Complete: 🔍
Committer:
Cache ID: 216:2AD:103

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