6.9
MEDIUM
CVE-2012-3516
Citrix XenServer Guest Kernel Privilege Escalation and Denial of Service
Description

The GNTTABOP_swap_grant_ref sub-operation in the grant table hypercall in Xen 4.2 and Citrix XenServer 6.0.2 allows local guest kernels or administrators to cause a denial of service (host crash) and possibly gain privileges via a crafted grant reference that triggers a write to an arbitrary hypervisor memory location.

INFO

Published Date :

Nov. 23, 2012, 8:55 p.m.

Last Modified :

Feb. 1, 2013, 4:49 a.m.

Source :

[email protected]

Remotely Exploitable :

No

Impact Score :

10.0

Exploitability Score :

3.4
Affected Products

The following products are affected by CVE-2012-3516 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
1 Citrix xenserver
: Total Affected Vendor : 2 | Products : 2
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-2012-3516.

URL Resource
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00004.html
http://secunia.com/advisories/50472 Vendor Advisory
http://secunia.com/advisories/50530 Vendor Advisory
http://support.citrix.com/article/CTX134708 Patch Vendor Advisory
http://wiki.xen.org/wiki/Security_Announcements#XSA-18_grant_table_entry_swaps_have_inadequate_bounds_checking
http://www.openwall.com/lists/oss-security/2012/09/05/11
http://www.securityfocus.com/bid/55411

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-2012-3516 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2012-3516 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.

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-2012-3516 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-2012-3516 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

0.24592

percentile

CVSS2 - Vulnerability Scoring System
Access Vector
Access Complexity
Authentication
Confidentiality
Integrity
Availability
: