Citrix Xen up to 3.2.3 conf_space_capability_msi.c pciback_enable_msi memory corruption

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5.4$0-$5k0.00

A vulnerability classified as problematic has been found in Citrix Xen up to 3.2.3 (Connectivity Software). This affects the function pciback_enable_msi of the file drivers/xen/pciback/conf_space_capability_msi.c. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. This is going to have an impact on availability.

The weakness was published 02/05/2013 as msg00003 as confirmed mailinglist post (Website). The advisory is shared at lists.xen.org. This vulnerability is uniquely identified as CVE-2013-0231 since 12/06/2012. The exploitability is told to be easy. An attack has to be approached locally. No form of authentication is needed for exploitation. Technical details and a public exploit are known.

After immediately, there has been an exploit disclosed. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 75184 (openSUSE Security Update : kernel (openSUSE-SU-2013:1619-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 370047 (Citrix XenServer Security Update (CTX136540)).

Applying the patch xsa43 is able to eliminate this problem. The bugfix is ready for download at lists.xen.org. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at SecurityFocus (BID 57740), X-Force (81923), Secunia (SA52059), Vulnerability Center (SBV-38778) and Tenable (75184). Similar entries are available at 7083, 7599, 7602 and 7603.

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VulDB Meta Base Score: 6.2
VulDB Meta Temp Score: 5.4

VulDB Base Score: 6.2
VulDB Temp Score: 5.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

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Exploitinginfoedit

Class: Memory corruption
CWE: CWE-119
ATT&CK: Unknown

Local: Yes
Remote: No

Availability: 🔍
Access: Public
Status: Proof-of-Concept

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 75184
Nessus Name: openSUSE Security Update : kernel (openSUSE-SU-2013:1619-1)
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Nessus Port: 🔍

OpenVAS ID: 892632
OpenVAS Name: Debian Security Advisory DSA 2632-1 (linux-2.6 - privilege escalation/denial of service
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Countermeasuresinfoedit

Recommended: Patch
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Patch: xsa43

Timelineinfoedit

12/06/2012 🔍
02/05/2013 +61 days 🔍
02/05/2013 +0 days 🔍
02/05/2013 +0 days 🔍
02/05/2013 +0 days 🔍
02/05/2013 +0 days 🔍
02/06/2013 +1 days 🔍
02/11/2013 +5 days 🔍
02/12/2013 +1 days 🔍
03/14/2013 +30 days 🔍
06/13/2014 +456 days 🔍
12/26/2016 +927 days 🔍
04/25/2017 +120 days 🔍

Sourcesinfoedit

Vendor: https://www.citrix.com/

Advisory: msg00003
Status: Confirmed

CVE: CVE-2013-0231 (🔍)
OVAL: 🔍

SecurityFocus: 57740 - Xen Linux PCI Backend Drivers Local Denial of Service Vulnerability
Secunia: 52059 - Xen "pciback_enable_msi()" Log Message Flooding Denial of Service Vulnerability, Not Critical
X-Force: 81923 - Xen pciback_enable_msi() denial of service, Medium Risk
Vulnerability Center: 38778 - XenSource Xen on Linux Kernel and Citrix XenServer Local Denial of Service via Kernel Log Messages, Medium
OSVDB: 89903

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfoedit

Created: 02/11/2013 09:43 AM
Updated: 04/25/2017 11:03 PM
Changes: (4) source_oval_id source_secunia_date source_securityfocus_date source_securityfocus_class
Complete: 🔍
Committer: olku

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