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Fencer Vulns
high 7.5

CVE-2019-18217 in the critical feed json

ProFTPD before 1.3.6b and 1.3.7rc before 1.3.7rc2 allows remote unauthenticated denial-of-service due to incorrect handling of overly long…

published 2019-10-21 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-8017

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
20.3%
EPSS 20.3% chance of exploitation in 30 days, percentile 97%
public exploits
0
none known, plus a Nuclei check

Summary

ProFTPD before 1.3.6b and 1.3.7rc before 1.3.7rc2 allows remote unauthenticated denial-of-service due to incorrect handling of overly long commands because main.c in a child process enters an infinite loop.

Patch / fix

  • proftpd-dfsg Debian 14, Debian 13, Debian 12 1.3.6a-2

debian advisories DEBIAN-CVE-2019-18217

  • proftpd openSUSE Tumbleweed 1.3.6e-1.10
  • proftpd Package Hub 15 SP1, Package Hub 15, openSUSE Leap 15.1 1.3.6b-bp151.4.6.2

opensuse advisories openSUSE-SU-2024:11196-1openSUSE-SU-2020:0031-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2019-18217 updated cvss 6.5

proftpd: denial of service due to incorrect handling of long command

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

cisa ICSA-20-042-03 updated cvss 7.5

Siemens SIMATIC CP 1543-1

  • Siemens SIMATIC CP 1543-1 (incl. SIPLUS NET variants) >=V2.0_and_<V2.2
    affected: fixed in V2.2, mitigation

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

Exploit prediction

20.25% chance of exploitation in the next 30 days, higher than 97% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • Nuclei template ProFTPD < 1.3.6b - Remote Unauthenticated DoS nuclei detection template
  • github.com https://github.com/proftpd/proftpd/issues/846 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

Classification

Weakness
  • CWE-835 Loop with Unreachable Exit Condition

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.