Medium severity · published May 28, 2021
CVE-2021-20201
A flaw was found in spice in versions before 0.14.92
5.3
CVSS
2.7%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.7% · higher than 86% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
EL
Enterprise Linux · Redhat
6.0; 7.0; 8.0 · source: NVD
SP
Spice · Spice Project
before 0.14.92 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-20201
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-20201
Exploit
https://blog.qualys.com/product-tech/2011/10/31/tls-renegotiation-and-denial-of-service-attacks
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=1921846
Third Party Advisory
https://security.gentoo.org/glsa/202208-10
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