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CVE-2021-20201

Date: May 28, 2021

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.

Language: C

Severity Score

Related Resources (10)

https://people.canonical.com/~ubuntu-security/cve/CVE-2021-20201
https://bugzilla.redhat.com/show_bug.cgi?id=1921846
https://security.alpinelinux.org/vuln/CVE-2021-20201
https://security.gentoo.org/glsa/202208-10
https://security-tracker.debian.org/tracker/CVE-2021-20201
https://nvd.nist.gov/vuln/detail/CVE-2021-20201
https://access.redhat.com/security/cve/CVE-2021-20201
https://gitlab.freedesktop.org/spice/spice/-/commit/95a0cfac8a1c8eff50f05e65df945da3bb501fc9
https://blog.qualys.com/product-tech/2011/10/31/tls-renegotiation-and-denial-of-service-attacks
https://www.mend.io/vulnerability-database/CVE-2021-20201

Severity Score

Weakness Type (CWE)

Uncontrolled Resource Consumption ('Resource Exhaustion')

CWE-400

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): LOW

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): PARTIAL
Additional information:

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