Linux Foundation Xen up to 4.3.1 TLB Flush dma_pte_clear_one access control

CVSS Meta Temp Score
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CTI Interest Score
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4.2$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Linux Foundation Xen 4.2.1/4.2.2/4.2.3/4.3.0/4.3.1. This issue affects the function dma_pte_clear_one of the component TLB Flush Handler. This manipulation causes access control. This vulnerability is tracked as CVE-2013-6375. No exploit exists. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability was found in Linux Foundation Xen 4.2.1/4.2.2/4.2.3/4.3.0/4.3.1 (Virtualization Software). It has been declared as critical. Affected by this vulnerability is the function dma_pte_clear_one of the component TLB Flush Handler. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-264. As an impact it is known to affect confidentiality, and integrity. The summary by CVE is:

Xen 4.2.x and 4.3.x, when using Intel VT-d for PCI passthrough, does not properly flush the TLB after clearing a present translation table entry, which allows local guest administrators to cause a denial of service or gain privileges via unspecified vectors related to an "inverted boolean parameter."

The weakness was disclosed 11/20/2013 as Xen Security Advisory 78 as not defined mailinglist post (oss-sec). The advisory is shared at seclists.org. This vulnerability is known as CVE-2013-6375 since 11/04/2013. An attack has to be approached locally. The successful exploitation needs a single authentication. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1068 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 71247 (Fedora 18 : xen-4.2.3-10.fc18 (2013-22312)), 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 166636 (SUSE Enterprise Linux Security Update for Xen (SUSE-SU-2013:1923-1)).

Applying a patch is able to eliminate this problem. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (89101), Tenable (71247), SecurityFocus (BID 63830†), OSVDB (100098†) and Secunia (SA55650†). The entries VDB-8617 and VDB-64149 are pretty similar. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
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CVSSv3info

VulDB Meta Base Score: 4.4
VulDB Meta Temp Score: 4.2

VulDB Base Score: 4.4
VulDB Temp Score: 4.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Access control
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Status: Not defined

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EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 71247
Nessus Name: Fedora 18 : xen-4.2.3-10.fc18 (2013-22312)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 867169
OpenVAS Name: Fedora Update for xen FEDORA-2013-22312
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Patch
Status: 🔍

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Timelineinfo

11/04/2013 🔍
11/20/2013 +16 days 🔍
11/20/2013 +0 days 🔍
11/20/2013 +0 days 🔍
11/23/2013 +3 days 🔍
11/26/2013 +3 days 🔍
11/26/2013 +0 days 🔍
06/02/2021 +2745 days 🔍

Sourcesinfo

Vendor: linuxfoundation.org

Advisory: Xen Security Advisory 78
Status: Not defined

CVE: CVE-2013-6375 (🔍)
GCVE (CVE): GCVE-0-2013-6375
GCVE (VulDB): GCVE-100-11257

OVAL: 🔍

X-Force: 89101
SecurityFocus: 63830
Secunia: 55650 - Xen Translation Table Entry Handling Privilege Escalation Weakness, Not Critical
OSVDB: 100098
SecurityTracker: 1029369
Vulnerability Center: 42364 - XenSource Xen Local Denial of Service and Privilege Escalation Related to an Inverted Boolean Parameter, Medium

See also: 🔍

Entryinfo

Created: 11/26/2013 13:57
Updated: 06/02/2021 13:52
Changes: 11/26/2013 13:57 (76), 05/15/2017 11:57 (1), 06/02/2021 13:47 (3), 06/02/2021 13:52 (1)
Complete: 🔍
Committer: olku
Cache ID: 216::103

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