PT-2019-15799 · Proftpd+2 · Proftpd+2

Debrouxl · Published 2019-07-30 · Updated 2025-10-22 · CVE-2019-19271

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:C/A:N

Name of the Vulnerable Software and Affected Versions ProFTPD versions prior to 1.3.6

Description An issue was discovered in the tls verify crl function, where a wrong iteration variable is used when checking a client certificate against Certificate Revocation List (CRL) entries. This can cause some CRL entries to be ignored, allowing clients with revoked certificates to connect to the server.

Recommendations For versions prior to 1.3.6, update to version 1.3.6 or later to resolve the issue.

Fix

Improper Certificate Validation

Weakness Enumeration

CWE-295

Related Identifiers

ALT-PU-2019-2329

ALT-PU-2019-2647

BDU:2025-13427

CVE-2019-19271

Affected Products

Alt Linux

Proftpd

Red Os

References · 10

• https://github.com/proftpd/proftpd/issues/860 · Patch
• https://osv.dev/vulnerability/CVE-2019-19271 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2019-19271 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2019-19271 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2019-19271 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-19271 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2019-19271 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2019-19271 · Security Note
• https://bdu.fstec.ru/vul/2025-13427 · Security Note
• https://redos.red-soft.ru/support/secure/uyazvimosti/mnozhestvennye-uyazvimosti-proftpd-22102025/?sphrase_id=1330675 · Note