SB2017022805 - Improper access control in Xen
Published: February 28, 2017 Updated: July 28, 2020
Security Bulletin ID
SB2017022805
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Improper access control (CVE-ID: CVE-2016-9818)
The vulnerability allows a local authenticated user to a crash the entire system.
Xen through 4.7.x allows local ARM guest OS users to cause a denial of service (host crash) via vectors involving an asynchronous abort while at HYP.
Remediation
Install update from vendor's website.
References
- http://www.openwall.com/lists/oss-security/2016/11/29/3
- http://www.openwall.com/lists/oss-security/2016/12/05/7
- http://www.securityfocus.com/bid/94581
- http://www.securitytracker.com/id/1037358
- http://xenbits.xen.org/xsa/advisory-201.html
- http://xenbits.xen.org/xsa/xsa201-4.patch
- https://security.gentoo.org/glsa/201612-56