SB2016021904 - Multiple vulnerabilities in Xen

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Main Vulnerability Database SB2016021904

SB2016021904 - Multiple vulnerabilities in Xen

Published: February 19, 2016 Updated: August 9, 2020

Security Bulletin ID SB2016021904
Severity
Medium
Patch available
NO
Number of vulnerabilities 2
Exploitation vector Local access
Highest impact Denial of service

Breakdown by Severity

Medium 50% Low 50%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Improper access control (CVE-ID: CVE-2016-4963)

The vulnerability allows a local authenticated user to perform a denial of service (DoS) attack.

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.


2) Input validation error (CVE-ID: CVE-2016-2271)

The vulnerability allows local HVM guest users to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can cause a denial of service (guest crash) via vectors related to a non-canonical RIP.


Remediation

Cybersecurity Help is not aware of any official remediation provided by the vendor.

References