CVE intelligence and bounded remediation
CVE-2017-15130 — A denial of service flaw was found in dovecot before 2.2.34
Medium
CVSS 5.9
A denial of service flaw was found in dovecot before 2.2.34. An attacker able to generate random SNI server names could exploit TLS SNI configuration lookups, leading to excessive memory usage and the process to restart.
- Severity
- Medium
- CVSS
- 5.9 (3.0)
- Published
- 2018-03-02
- CISA KEV
- Not currently listed
- Ecosystem
- software/application
- Weaknesses
- CWE-400
Affected products
- dovecot / dovecot
- debian / debian_linux / 8.0
- debian / debian_linux / 9.0
- canonical / ubuntu_linux / 14.04
- canonical / ubuntu_linux / 16.04
- canonical / ubuntu_linux / 17.10
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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