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Vulnerability record · CVE-2019-18217 · published 21 October 2019

CVE-2019-18217: Proftpd vulnerability

PProftpd · Proftpd

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.

7.5 CVSS 3.1 High EPSS 20% · top 2.6% CWE-835 · CWE-835
7.5CVSS 3.1 base score, v2 5.0
20%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
28References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00009.html
https://cert-portal.siemens.com/productcert/pdf/ssa-940889.pdf
https://github.com/proftpd/proftpd/blob/1.3.6/NEWS Release NotesThird Party Advisory
https://github.com/proftpd/proftpd/blob/1.3.6/RELEASE_NOTES Release NotesThird Party Advisory
https://github.com/proftpd/proftpd/blob/master/NEWS Release NotesThird Party Advisory
https://github.com/proftpd/proftpd/blob/master/RELEASE_NOTES Release NotesThird Party Advisory
https://github.com/proftpd/proftpd/issues/846 ExploitIssue TrackingThird Party Advisory
https://lists.debian.org/debian-lts-announce/2019/10/msg00036.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NJDQRVZTILBX4BUCTIRKP2W
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RB2FPAWDWXT5ALAFIC5Y3RS
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YLRPYEEMQJVAXO2SXRGOQ4H
https://seclists.org/bugtraq/2019/Nov/7
https://security.gentoo.org/glsa/202003-35
https://www.debian.org/security/2019/dsa-4559
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00009.html
https://cert-portal.siemens.com/productcert/pdf/ssa-940889.pdf
https://github.com/proftpd/proftpd/blob/1.3.6/NEWS Release NotesThird Party Advisory
https://github.com/proftpd/proftpd/blob/1.3.6/RELEASE_NOTES Release NotesThird Party Advisory
https://github.com/proftpd/proftpd/blob/master/NEWS Release NotesThird Party Advisory
https://github.com/proftpd/proftpd/blob/master/RELEASE_NOTES Release NotesThird Party Advisory
https://github.com/proftpd/proftpd/issues/846 ExploitIssue TrackingThird Party Advisory
https://lists.debian.org/debian-lts-announce/2019/10/msg00036.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NJDQRVZTILBX4BUCTIRKP2W
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RB2FPAWDWXT5ALAFIC5Y3RS
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YLRPYEEMQJVAXO2SXRGOQ4H
https://seclists.org/bugtraq/2019/Nov/7
https://security.gentoo.org/glsa/202003-35
https://www.debian.org/security/2019/dsa-4559

Track CVE-2019-18217 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2015-3306ProFTPD mod_copy arbitrary file read and writeThe mod_copy module in ProFTPD 1.3.5 fails to restrict the SITE CPFR and SITE CPTO commands, letting remote attackers copy arbitrary files on the ser…EPSS 97%analysed10.0CVE-2010-4221ProFTPD TELNET IAC handling stack buffer overflow allows remote code executionProFTPD before 1.3.3c contains multiple stack-based buffer overflows in the pr_netio_telnet_gets function in netio.c. A remote attacker can trigger t…EPSS 91%analysed9.8CVE-2019-12815ProFTPD mod_copy arbitrary file copy enables unauthenticated RCEmod_copy in ProFTPD up to 1.3.5b performs an arbitrary file copy without validating the source or destination, letting an unauthenticated remote clie…EPSS 58%analysed9.3CVE-2010-20103Proftpd vulnerabilityA malicious backdoor was embedded in the official ProFTPD 1.3.3c source tarball distributed between November 28 and December 2, 2010. The backdoor im…EPSS 5.1%9.0CVE-2011-4130Proftpd vulnerabilityUse-after-free vulnerability in the Response API in ProFTPD before 1.3.3g allows remote authenticated users to execute arbitrary code via vectors inv…EPSS 13%8.8CVE-2020-9273Proftpd use after free vulnerabilityIn ProFTPD 1.3.7, it is possible to corrupt the memory pool by interrupting the data transfer channel. This triggers a use-after-free in alloc_pool i…EPSS 12%8.7CVE-2026-63090Proftpd heap-based buffer overflow vulnerabilityProFTPD before 1.3.9c and 1.3.10rc3 contains a heap-based buffer overflow vulnerability in the mod_sftp module that allows authenticated low-privileg…EPSS 0.93%8.6CVE-2026-35025Proftpd link following vulnerabilityProFTPD through 1.3.9b and 1.3.10rc2 contains an access control bypass vulnerability that allows authenticated FTP users to circumvent Directory ACL …EPSS 0.51%

Source: NIST National Vulnerability Database (record CVE-2019-18217), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.