Citrix Xen up to 4.2.0 guest_physmap_mark_populate_on_demand denial of service

CVSS Meta Temp Score
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CTI Interest Score
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4.8$0-$5k0.00

A vulnerability was found in Citrix Xen (Connectivity Software). It has been declared as problematic. Affected by this vulnerability is the function guest_physmap_mark_populate_on_demand. The manipulation with an unknown input 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. The summary by CVE is:

The guest_physmap_mark_populate_on_demand function in Xen 4.2 and earlier does not properly unlock the subject GFNs when checking if they are in use, which allows local guest HVM administrators to cause a denial of service (hang) via unspecified vectors.

The weakness was released 12/03/2012 as msg00005 as confirmed patch (Website). The advisory is shared at lists.xen.org. The public release was coordinated with Citrix. This vulnerability is known as CVE-2012-5514 since 10/24/2012. An attack has to be approached locally. A single authentication is needed for exploitation. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 63188 (Debian DSA-2582-1 : xen - several vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 370048 (Citrix XenServer Security Update (CTX135777)).

Applying the patch xsa30-4.1.patch/xsa30-4.2.patch 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 X-Force (80483), Tenable (63188), SecurityFocus (BID 56803†), OSVDB (88130†) and Secunia (SA51397†). Entries connected to this vulnerability are available at VDB-6947, VDB-6948, VDB-6949 and VDB-7080. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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Vendor

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Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 4.8

VulDB Base Score: 5.5
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

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

Local: Yes
Remote: No

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 63188
Nessus Name: Debian DSA-2582-1 : xen - several vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 892582
OpenVAS Name: Debian Security Advisory DSA 2582-1 (xen - several vulnerabilities
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: xsa30-4.1.patch/xsa30-4.2.patch

Timelineinfo

10/24/2012 🔍
12/03/2012 +40 days 🔍
12/03/2012 +0 days 🔍
12/03/2012 +0 days 🔍
12/03/2012 +0 days 🔍
12/04/2012 +1 days 🔍
12/05/2012 +1 days 🔍
12/07/2012 +2 days 🔍
12/13/2012 +6 days 🔍
04/24/2013 +132 days 🔍
04/20/2021 +2918 days 🔍

Sourcesinfo

Vendor: citrix.com

Advisory: msg00005
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2012-5514 (🔍)
GCVE (CVE): GCVE-0-2012-5514
GCVE (VulDB): GCVE-100-7081

OVAL: 🔍

X-Force: 80483 - Xen guest_physmap_mark_populate_on_demand() denial of service, Medium Risk
SecurityFocus: 56803 - Xen CVE-2012-5514 Local Denial of Service Vulnerability
Secunia: 51397 - Xen Multiple Vulnerabilities, Less Critical
OSVDB: 88130
Vulnerability Center: 39323 - Xen 4.2 and Earlier \x27guest_physmap_mark_populate_on_demand\x27 Allows Local DoS Vulnerability, Low

See also: 🔍

Entryinfo

Created: 12/07/2012 10:26 AM
Updated: 04/20/2021 06:58 AM
Changes: 12/07/2012 10:26 AM (86), 04/28/2017 09:12 AM (4), 04/20/2021 06:58 AM (3)
Complete: 🔍
Committer: olku
Cache ID: 18:001:40

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