Vulnerability Name:

CVE-2019-20485 (CCN-178887)

Assigned:2019-12-05
Published:2019-12-05
Updated:2023-02-03
Summary:qemu/qemu_driver.c in libvirt before 6.0.0 mishandles the holding of a monitor job during a query to a guest agent, which allows attackers to cause a denial of service (API blockage).
CVSS v3 Severity:5.7 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
5.0 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Adjacent
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
6.5 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
5.7 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
5.8 Medium (REDHAT CVSS v3.1 Vector: CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H)
5.1 Medium (REDHAT Temporal CVSS v3.1 Vector: CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Adjacent
Attack Complexity (AC): High
Privileges Required (PR): Low
User Interaction (UI): None
Scope:Scope (S): Changed
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
CVSS v2 Severity:2.7 Low (CVSS v2 Vector: AV:A/AC:L/Au:S/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Adjacent_Network
Access Complexity (AC): Low
Authentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
6.8 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:S/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
Vulnerability Type:CWE-400
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2019-20485

Source: cve@mitre.org
Type: Issue Tracking, Third Party Advisory
cve@mitre.org

Source: cve@mitre.org
Type: Issue Tracking, Vendor Advisory
cve@mitre.org

Source: XF
Type: UNKNOWN
libvirt-cve201920485-dos(178887)

Source: CCN
Type: libvirt GIT Repository
qemu: don't hold both jobs for suspend

Source: cve@mitre.org
Type: Patch, Vendor Advisory
cve@mitre.org

Source: cve@mitre.org
Type: Mailing List, Third Party Advisory
cve@mitre.org

Source: cve@mitre.org
Type: Third Party Advisory
cve@mitre.org

Source: cve@mitre.org
Type: Mailing List, Third Party Advisory
cve@mitre.org

Vulnerable Configuration:Configuration RedHat 1:
  • cpe:/o:redhat:enterprise_linux:7:*:*:*:*:*:*:*
  • Configuration RedHat 2:
  • cpe:/o:redhat:enterprise_linux:7::client:*:*:*:*:*
  • Configuration RedHat 3:
  • cpe:/o:redhat:enterprise_linux:7::computenode:*:*:*:*:*
  • Configuration RedHat 4:
  • cpe:/o:redhat:enterprise_linux:7::server:*:*:*:*:*
  • Configuration RedHat 5:
  • cpe:/o:redhat:enterprise_linux:7::workstation:*:*:*:*:*
  • Configuration RedHat 6:
  • cpe:/a:redhat:enterprise_linux:8:*:*:*:*:*:*:*
  • Configuration RedHat 7:
  • cpe:/a:redhat:enterprise_linux:8::appstream:*:*:*:*:*
  • Configuration RedHat 8:
  • cpe:/a:redhat:enterprise_linux:8::crb:*:*:*:*:*

  • Configuration CCN 1:
  • cpe:/a:redhat:libvirt:5.10.0:*:*:*:*:*:*:*

  • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:com.redhat.rhsa:def:20204676
    P
    RHSA-2020:4676: virt:rhel and virt-devel:rhel security, bug fix, and enhancement update (Moderate)
    2020-11-04
    oval:com.redhat.rhsa:def:20204000
    P
    RHSA-2020:4000: libvirt security and bug fix update (Moderate)
    2020-09-29
    oval:com.ubuntu.bionic:def:2019204850000000
    V
    CVE-2019-20485 on Ubuntu 18.04 LTS (bionic) - low.
    2019-12-31
    oval:com.ubuntu.xenial:def:2019204850000000
    V
    CVE-2019-20485 on Ubuntu 16.04 LTS (xenial) - low.
    2019-12-31
    BACK
    redhat libvirt 5.10.0