SB2019123144 - Permissions, Privileges, and Access Controls in xen (Alpine package)

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Main Vulnerability Database SB2019123144

SB2019123144 - Permissions, Privileges, and Access Controls in xen (Alpine package)

Published: December 31, 2019

Security Bulletin ID SB2019123144
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Adjecent network
Highest impact Code execution

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2019-18424)

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

CVSSv4: CVSS:4.0/AV:A/AC:L/AT:P/PR:H/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a remote user to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when processing assignment of PCI devices. A privileged user of a guest operating system can program the PCI device to directly access host memory. Once the PCI device is deassigned, the code will be written into host memory. A remote attacker can corrupt host memory and perform denial of service attack or escalate privileges on the system.


Remediation

Install update from vendor's website.

References