SB2020031934 - Denial of service in libvirt 

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Main Vulnerability Database SB2020031934

SB2020031934 - Denial of service in libvirt

Published: March 19, 2020 Updated: May 23, 2020

Security Bulletin ID SB2020031934
Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote 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) Resource management error (CVE-ID: CVE-2019-20485)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improper management of internal resources with the qemu/qemu_driver.c in libvirt while holding of a monitor job during a query to a guest agent, which allows attackers to cause a denial of service (API blockage).


2) Resource management error (CVE-ID: CVE-2020-10703)

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

The vulnerability exists due to improper management of internal resources with the application when performing pool lookups within the storagePoolLookupByTargetPath() function in storage/storage_driver.c. A remote user can create a pool with empty target path and then perform  search for an empty target, which results in libvirt crash.


Remediation

Install update from vendor's website.

References