CVE intelligence and bounded remediation
CVE-2021-20201 — A flaw was found in spice in versions before 0.14.92
Medium
CVSS 5.3
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.
- Severity
- Medium
- CVSS
- 5.3 (3.1)
- Published
- 2021-05-28
- CISA KEV
- Not currently listed
- Ecosystem
- software/application
- Weaknesses
- CWE-400
Affected products
- spice_project / spice
- redhat / enterprise_linux / 6.0
- redhat / enterprise_linux / 7.0
- redhat / enterprise_linux / 8.0
Matched remediation archetype
Resource exhaustion and denial of service
This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.
Check exposure
- Identify attacker-influenced work factors including input size, nesting, compression, fan-out, regex cost, allocation, recursion, retries, and connection lifetime.
- Map per-request and shared CPU, memory, disk, descriptor, thread, queue, and downstream-service limits.
- Determine whether authentication, tenancy, quotas, and rate controls apply before expensive processing begins.
Remediate safely
- Bound input size, nesting, expansion, work, concurrency, queue depth, retries, and execution time before resource-intensive processing.
- Release resources on every success, error, cancellation, and timeout path and use backpressure instead of unbounded buffering.
- Update affected components and add small deterministic tests that assert resource ceilings rather than exhausting a host.
Authoritative sources
Complete CVE record and remediation plan
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