CVE intelligence and bounded remediation
CVE-2022-38178 — By spoofing the target resolver with responses that have a malformed EdDSA signature, an attacker can trigger a small memory leak
High
CVSS 7.5
By spoofing the target resolver with responses that have a malformed EdDSA signature, an attacker can trigger a small memory leak. It is possible to gradually erode available memory to the point where named crashes for lack of resources.
- Severity
- High
- CVSS
- 7.5 (3.1)
- Published
- 2022-09-21
- CISA KEV
- Not currently listed
- Ecosystem
- software/application
- Weaknesses
- CWE-401
Affected products
- isc / bind
- isc / bind / 9.11.3
- isc / bind / 9.11.5
- isc / bind / 9.11.6
- isc / bind / 9.11.7
- isc / bind / 9.11.8
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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