CVE intelligence and bounded remediation

CVE-2019-25588 — Bpftpserver Bulletproof Ftp Server security vulnerability

Medium CVSS 6.9

BulletProof FTP Server 2019.0.0.50 contains a denial of service vulnerability in the DNS Address field that allows local attackers to crash the application by supplying an excessively long string. Attackers can enable the DNS Address option in the Firewall settings and paste a buffer of 700 bytes to trigger a crash when the Test function is invoked.

Severity
Medium
CVSS
6.9 (4.0)
Published
2026-03-22
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-1282

Affected products

  • bpftpserver / bulletproof_ftp_server / 2019.0.0.50

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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