CVE-2016-4963
First published: Tue Jun 07 2016(Updated: )
The libxl device-handling in Xen through 4.6.x allows local guest OS users with access to the driver domain to cause a denial of service (management tool confusion) by manipulating information in the backend directories in xenstore.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Xen xen-unstable | =4.0.0 | |
| Xen xen-unstable | =4.0.1 | |
| Xen xen-unstable | =4.0.2 | |
| Xen xen-unstable | =4.0.3 | |
| Xen xen-unstable | =4.0.4 | |
| Xen xen-unstable | =4.1.0 | |
| Xen xen-unstable | =4.1.1 | |
| Xen xen-unstable | =4.1.2 | |
| Xen xen-unstable | =4.1.3 | |
| Xen xen-unstable | =4.1.4 | |
| Xen xen-unstable | =4.1.5 | |
| Xen xen-unstable | =4.1.6 | |
| Xen xen-unstable | =4.1.6.1 | |
| Xen xen-unstable | =4.2.0 | |
| Xen xen-unstable | =4.2.1 | |
| Xen xen-unstable | =4.2.2 | |
| Xen xen-unstable | =4.2.3 | |
| Xen xen-unstable | =4.2.4 | |
| Xen xen-unstable | =4.2.5 | |
| Xen xen-unstable | =4.3.0 | |
| Xen xen-unstable | =4.3.1 | |
| Xen xen-unstable | =4.3.2 | |
| Xen xen-unstable | =4.3.3 | |
| Xen xen-unstable | =4.3.4 | |
| Xen xen-unstable | =4.4.0 | |
| Xen xen-unstable | =4.4.0-rc1 | |
| Xen xen-unstable | =4.4.1 | |
| Xen xen-unstable | =4.4.2 | |
| Xen xen-unstable | =4.4.3 | |
| Xen xen-unstable | =4.4.4 | |
| Xen xen-unstable | =4.5.0 | |
| Xen xen-unstable | =4.5.1 | |
| Xen xen-unstable | =4.5.2 | |
| Xen xen-unstable | =4.5.3 | |
| Xen xen-unstable | =4.6.0 | |
| Xen xen-unstable | =4.6.1 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2016-4963?
The severity of CVE-2016-4963 is considered moderate, as it allows denial of service specifically affecting management tool operation in vulnerable Xen versions.
How does CVE-2016-4963 affect my Xen environment?
CVE-2016-4963 allows local guest OS users to manipulate xenstore backend directories, potentially causing confusion in management tools and leading to a denial of service.
Which versions of Xen are affected by CVE-2016-4963?
CVE-2016-4963 affects Xen versions from 4.0.0 to 4.6.1, including all versions in between.
How do I fix CVE-2016-4963?
To fix CVE-2016-4963, update your Xen installation to a version beyond 4.6.1 where the vulnerability has been addressed.
What mitigations exist for CVE-2016-4963?
There are no specific mitigations other than upgrading to an unaffected version of Xen to resolve CVE-2016-4963.
- agent/type
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- agent/author
- agent/weakness
- agent/last-modified-date
- agent/references
- agent/severity
- agent/event
- agent/description
- agent/first-publish-date
- agent/source
- agent/tags
- collector/nvd-index
- agent/software-canonical-lookup-request
- vendor/xen
- canonical/xen xen-unstable
- version/xen xen-unstable/4.0.0
- version/xen xen-unstable/4.0.1
- version/xen xen-unstable/4.0.2
- version/xen xen-unstable/4.0.3
- version/xen xen-unstable/4.0.4
- version/xen xen-unstable/4.1.0
- version/xen xen-unstable/4.1.1
- version/xen xen-unstable/4.1.2
- version/xen xen-unstable/4.1.3
- version/xen xen-unstable/4.1.4
- version/xen xen-unstable/4.1.5
- version/xen xen-unstable/4.1.6
- version/xen xen-unstable/4.1.6.1
- version/xen xen-unstable/4.2.0
- version/xen xen-unstable/4.2.1
- version/xen xen-unstable/4.2.2
- version/xen xen-unstable/4.2.3
- version/xen xen-unstable/4.2.4
- version/xen xen-unstable/4.2.5
- version/xen xen-unstable/4.3.0
- version/xen xen-unstable/4.3.1
- version/xen xen-unstable/4.3.2
- version/xen xen-unstable/4.3.3
- version/xen xen-unstable/4.3.4
- version/xen xen-unstable/4.4.0
- version/xen xen-unstable/4.4.0-rc1
- version/xen xen-unstable/4.4.1
- version/xen xen-unstable/4.4.2
- version/xen xen-unstable/4.4.3
- version/xen xen-unstable/4.4.4
- version/xen xen-unstable/4.5.0
- version/xen xen-unstable/4.5.1
- version/xen xen-unstable/4.5.2
- version/xen xen-unstable/4.5.3
- version/xen xen-unstable/4.6.0
- version/xen xen-unstable/4.6.1