Resource exhaustion in SPICE - CVE-2021-20201

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Main Vulnerability Database Vulnerabilities #VU53962

Resource exhaustion in SPICE - CVE-2021-20201

Published: June 9, 2021


Vulnerability identifier: #VU53962
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-20201
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

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

The vulnerability exists due to application does not properly control consumption of internal resources. A remote attacker can execute multiple renegotiations within a single connection and perform a denial of service (DoS) attack.


Affected software

SPICE
Arch Linux
Gentoo Linux
SUSE CaaS Platform
SUSE Manager Proxy
SUSE Manager Retail Branch Server
SUSE Manager Server
SUSE MicroOS
SUSE Linux Enterprise Micro
openSUSE Leap Micro
SUSE Enterprise Storage
SUSE Linux Enterprise Storage
SUSE OpenStack Cloud
Red Hat CodeReady Linux Builder for ARM 64
Red Hat CodeReady Linux Builder for x86_64
SUSE OpenStack Cloud Crowbar
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for ARM 64
HPE Helion Openstack
SUSE Linux Enterprise Server
SUSE Linux Enterprise Server for SAP
SUSE Linux Enterprise Software Development Kit
SUSE Linux Enterprise High Performance Computing
SUSE Linux Enterprise Module for Server Applications
SUSE Linux Enterprise Server for SAP Applications
openSUSE Leap
openEuler
libspice-server1
libspice-server1-debuginfo
spice-debugsource
libspice-server-devel
spice-help
spice-server
spice-debuginfo
spice-server-devel
spice
spice (Red Hat package)
app-emulation/spice
OpenShift Virtualization

How to mitigate CVE-2021-20201

Install updates from vendor's website.

SPICE - update to 0.15.0
libspice-server1 - addressed in versions 0.12.7-10.12.1, 0.12.8-18.1, 0.14.0-4.9.1, 0.14.1-4.3.1, 0.14.2-3.6.1, 0.14.3-150300.3.3.1
libspice-server1-debuginfo - addressed in versions 0.12.7-10.12.1, 0.12.8-18.1, 0.14.0-4.9.1, 0.14.1-4.3.1, 0.14.2-3.6.1, 0.14.3-150300.3.3.1
spice-debugsource - addressed in versions 0.12.7-10.12.1, 0.12.8-18.1, 0.14.0-4.9.1, 0.14.1-4.3.1, 0.14.2-3.6.1, 0.14.3-150300.3.3.1
libspice-server-devel - addressed in versions 0.12.8-18.1, 0.14.0-4.9.1, 0.14.1-4.3.1, 0.14.2-3.6.1, 0.14.3-150300.3.3.1
spice-help - update to 0.14.3-3
spice-server - update to 0.14.3-3
spice-debuginfo - update to 0.14.3-3
spice-server-devel - update to 0.14.3-3
spice-debugsource - update to 0.14.3-3
spice - update to 0.14.3-3
spice (Red Hat package) - update to 0.14.3-4.el8
app-emulation/spice - update to 0.15.0
OpenShift Virtualization - addressed in versions 2.6.6, 4.8.0

External References

Related Security Bulletins