CVE-2016-6258
First published: Tue Aug 02 2016(Updated: )
The PV pagetable code in arch/x86/mm.c in Xen 4.7.x and earlier allows local 32-bit PV guest OS administrators to gain host OS privileges by leveraging fast-paths for updating pagetable entries.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Xen XAPI | =3.4.0 | |
| Xen XAPI | =3.4.2 | |
| Xen XAPI | =3.4.3 | |
| Xen XAPI | =3.4.4 | |
| Xen XAPI | =4.0.0 | |
| Xen XAPI | =4.0.1 | |
| Xen XAPI | =4.0.3 | |
| Xen XAPI | =4.0.4 | |
| Xen XAPI | =4.1.0 | |
| Xen XAPI | =4.1.1 | |
| Xen XAPI | =4.1.2 | |
| Xen XAPI | =4.1.3 | |
| Xen XAPI | =4.1.4 | |
| Xen XAPI | =4.1.5 | |
| Xen XAPI | =4.2.0 | |
| Xen XAPI | =4.2.1 | |
| Xen XAPI | =4.2.2 | |
| Xen XAPI | =4.2.3 | |
| Xen XAPI | =4.3.0 | |
| Xen XAPI | =4.3.1 | |
| Xen XAPI | =4.4.0 | |
| Xen XAPI | =4.4.1 | |
| Xen XAPI | =4.5.0 | |
| Xen XAPI | =4.6.0 | |
| Xen XAPI | =4.6.1 | |
| Xen XAPI | =4.6.3 | |
| Xen XAPI | =4.7.0 | |
| XenServer | =6.0 | |
| XenServer | =6.0.2 | |
| XenServer | =6.1 | |
| XenServer | =6.2.0-sp1 | |
| XenServer | =6.5.0-sp1 | |
| XenServer | =7.0 |
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Reference Links
- http://support.citrix.com/article/CTX214954
- http://www.debian.org/security/2016/dsa-3633
- http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
- http://www.securityfocus.com/bid/92131
- http://www.securitytracker.com/id/1036446
- http://xenbits.xen.org/xsa/advisory-182.html
- http://xenbits.xen.org/xsa/xsa182-4.5.patch
- http://xenbits.xen.org/xsa/xsa182-4.6.patch
- http://xenbits.xen.org/xsa/xsa182-unstable.patch
- https://security.gentoo.org/glsa/201611-09
Frequently Asked Questions
What is the severity of CVE-2016-6258?
CVE-2016-6258 is classified as a high-severity vulnerability that allows local 32-bit PV guest OS administrators to escalate privileges to the host OS.
How does CVE-2016-6258 affect system security?
CVE-2016-6258 can potentially allow unauthorized access to the host operating system, compromising the security of the entire virtualization environment.
How do I fix CVE-2016-6258?
To remediate CVE-2016-6258, upgrade to Xen version 4.7.1 or later, as this contains patches that address the vulnerability.
Is my version of Xen vulnerable to CVE-2016-6258?
Any version of Xen prior to 4.7.1, including 3.4.x, 4.0.x, 4.1.x, 4.2.x, 4.3.x, 4.4.x, 4.5.x, and 4.6.x, are considered vulnerable to CVE-2016-6258.
What is the impact of CVE-2016-6258 on XenServer?
XenServer versions including 6.0, 6.1, 6.2, 6.5, and 7.0 are affected by CVE-2016-6258, making them vulnerable to privilege escalation attacks.
- agent/references
- agent/type
- agent/remedy
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/weakness
- agent/author
- agent/severity
- agent/event
- agent/description
- agent/first-publish-date
- agent/source
- agent/softwarecombine
- agent/tags
- collector/nvd-index
- agent/software-canonical-lookup-request
- vendor/xen
- canonical/xen xapi
- version/xen xapi/3.4.0
- version/xen xapi/3.4.2
- version/xen xapi/3.4.3
- version/xen xapi/3.4.4
- version/xen xapi/4.0.0
- version/xen xapi/4.0.1
- version/xen xapi/4.0.3
- version/xen xapi/4.0.4
- version/xen xapi/4.1.0
- version/xen xapi/4.1.1
- version/xen xapi/4.1.2
- version/xen xapi/4.1.3
- version/xen xapi/4.1.4
- version/xen xapi/4.1.5
- version/xen xapi/4.2.0
- version/xen xapi/4.2.1
- version/xen xapi/4.2.2
- version/xen xapi/4.2.3
- version/xen xapi/4.3.0
- version/xen xapi/4.3.1
- version/xen xapi/4.4.0
- version/xen xapi/4.4.1
- version/xen xapi/4.5.0
- version/xen xapi/4.6.0
- version/xen xapi/4.6.1
- version/xen xapi/4.6.3
- version/xen xapi/4.7.0
- vendor/citrix
- canonical/xenserver
- version/xenserver/6.0
- version/xenserver/6.0.2
- version/xenserver/6.1
- version/xenserver/6.2.0-sp1
- version/xenserver/6.5.0-sp1
- version/xenserver/7.0