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CVE-2021-20201
Component Overview
Vulnerability Overview
Name
CVE-2021-20201
Source
NVD (
link
)
Debian (
link
)
Description
A flaw was found in spice in versions before 0.14.92. A DoS tool might make it easier for remote attackers to cause a denial of service (CPU consumption) by performing many renegotiations within a single connection.
CWEs
CWE-400
Published Date
May 28, 2021
Updated Date
Jun 17, 2026
Workaround
-
Advisories
https://blog.qualys.com/product-tech/2011/10/31/tls-renegotiation-and-denial-of-service-attacks
Exploit
https://bugzilla.redhat.com/show_bug.cgi?id=1921846
Issue Tracking
https://security.gentoo.org/glsa/202208-10
Third Party Advisory
https://blog.qualys.com/product-tech/2011/10/31/tls-renegotiation-and-denial-of-service-attacks
Exploit
https://bugzilla.redhat.com/show_bug.cgi?id=1921846
Issue Tracking
https://security.gentoo.org/glsa/202208-10
Third Party Advisory
Analysis
#
Affected Component
Analysis
spice
Exploitable
Vulnerability Ratings
#
5.3
CVSSv31
5
CVSSv2
Others affected components
#
Name
Project
Project Version
Version
Status
spice
buildroot
2025.02.x
0.15.2
Not Affected
spice
buildroot
master
0.15.2
Not Affected
spice
openwrt
master
0.15.0-r3
Not Affected
spice
openwrt
openwrt-25.12
0.15.0-r3
Not Affected
spice
yocto
master
0.16.0
Not Affected
spice
yocto
scarthgap
0.15.2
Not Affected