5.6
MEDIUM
CVE-2016-5242
Xen P2M NULL Pointer Dereferenceciluality
Description

The p2m_teardown function in arch/arm/p2m.c in Xen 4.4.x through 4.6.x allows local guest OS users with access to the driver domain to cause a denial of service (NULL pointer dereference and host OS crash) by creating concurrent domains and holding references to them, related to VMID exhaustion.

INFO

Published Date :

June 7, 2016, 2:06 p.m.

Last Modified :

Nov. 28, 2016, 8:23 p.m.

Remotely Exploitable :

No

Impact Score :

4.0

Exploitability Score :

1.1
Affected Products

The following products are affected by CVE-2016-5242 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Xen xen
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2016-5242.

URL Resource
http://www.debian.org/security/2016/dsa-3633
http://www.securityfocus.com/bid/91015
http://www.securitytracker.com/id/1036035
http://xenbits.xen.org/xsa/advisory-181.html Vendor Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2016-5242 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2016-5242 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Nov. 28, 2016

    Action Type Old Value New Value
    Added Reference http://www.securityfocus.com/bid/91015 [No Types Assigned]
    Added Reference http://www.debian.org/security/2016/dsa-3633 [No Types Assigned]
  • Modified Analysis by [email protected]

    Jun. 15, 2016

    Action Type Old Value New Value
    Removed CVSS V2 (AV:L/AC:L/Au:N/C:N/I:N/A:C)
    Removed CVSS V3 AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
    Added CVSS V2 (AV:L/AC:M/Au:N/C:N/I:N/A:C)
    Added CVSS V3 AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H
  • CVE Modified by [email protected]

    Jun. 11, 2016

    Action Type Old Value New Value
    Added Reference http://www.securitytracker.com/id/1036035
  • Modified Analysis by [email protected]

    Jun. 09, 2016

    Action Type Old Value New Value
    Added Evaluator Description <a href="http://cwe.mitre.org/data/definitions/476.html">CWE-476: NULL Pointer Dereference</a>
    Added CPE Configuration Configuration 1 OR *cpe:2.3:o:xen:xen:4.6.1:*:*:*:*:*:*:* *cpe:2.3:o:xen:xen:4.6.0:*:*:*:*:*:*:* *cpe:2.3:o:xen:xen:4.5.3:*:*:*:*:*:*:* *cpe:2.3:o:xen:xen:4.5.2:*:*:*:*:*:*:* *cpe:2.3:o:xen:xen:4.5.1:*:*:*:*:*:*:* *cpe:2.3:o:xen:xen:4.5.0:*:*:*:*:*:*:* *cpe:2.3:o:xen:xen:4.4.4:*:*:*:*:*:*:* *cpe:2.3:o:xen:xen:4.4.3:*:*:*:*:*:*:* *cpe:2.3:o:xen:xen:4.4.2:*:*:*:*:*:*:* *cpe:2.3:o:xen:xen:4.4.1:*:*:*:*:*:*:* *cpe:2.3:o:xen:xen:4.4.0:rc1:*:*:*:*:*:* *cpe:2.3:o:xen:xen:4.4.0:*:*:*:*:*:*:*
    Added CVSS V2 (AV:L/AC:L/Au:N/C:N/I:N/A:C)
    Added CVSS V3 AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
    Changed Reference Type http://xenbits.xen.org/xsa/advisory-181.html No Types Assigned http://xenbits.xen.org/xsa/advisory-181.html Advisory
    Added CWE NVD-CWE-Other
  • CVE Modified by [email protected]

    Jun. 09, 2016

    Action Type Old Value New Value
    Changed Description The p2m_teardown function in arch/arm/p2m.c in Xen 4.4.x through 4.6.x allows local OS guest users with access to the driver domain to cause a denial of service (NULL pointer dereference and host OS crash) by creating concurrent domains and holding references to them, related to VMID exhaustion. The p2m_teardown function in arch/arm/p2m.c in Xen 4.4.x through 4.6.x allows local guest OS users with access to the driver domain to cause a denial of service (NULL pointer dereference and host OS crash) by creating concurrent domains and holding references to them, related to VMID exhaustion.
  • CVE Modified by [email protected]

    Jun. 08, 2016

    Action Type Old Value New Value
    Changed Description The p2m_teardown function in arch/arm/p2m.c in Xen 4.4.x through 4.6.x allows local guest OS users with access to the driver domain to cause a denial of service (NULL pointer dereference and host OS crash) by creating concurrent domains and holding references to them, related to VMID exhaustion. The p2m_teardown function in arch/arm/p2m.c in Xen 4.4.x through 4.6.x allows local OS guest users with access to the driver domain to cause a denial of service (NULL pointer dereference and host OS crash) by creating concurrent domains and holding references to them, related to VMID exhaustion.
  • Initial Analysis by [email protected]

    Jun. 07, 2016

    Action Type Old Value New Value
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2016-5242 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2016-5242 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.06 }} 0.00%

score

0.22803

percentile

CVSS30 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability