CVE-2019-19269

An issue was discovered in tls_verify_crl in ProFTPD through 1.3.6b. A dereference of a NULL pointer may occur. This pointer is returned by the OpenSSL sk_X509_REVOKED_value() function when encountering an empty CRL installed by a system administrator. The dereference occurs when validating the certificate of a client connecting to the server in a TLS client/server mutual-authentication setup.

Published: 2019-11-30 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2019-19269 is rated Moderate Risk (46.1/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.03%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2019-19269

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-13 1.69% 1.03% -0.66%
2 2026-03-02 1.78% 1.69% -0.09%
3 2025-12-28 — 1.78% —

Full EPSS history (20 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2019-19269

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.9 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:H)
They need powerful rights—admin, root, or similar—before this pays off.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.2 3.6 [email protected]
4.0 2.0 MEDIUM
AV:N/AC:L/Au:S/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:S)
A single authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.0 2.9 [email protected]

Weakness enumeration for CVE-2019-19269

OS Trackers for CVE-2019-19269

vendor priority summary link
debian not yet assigned CVE-2019-19269 not yet assigned priority: Debian including 1 source packages (proftpd-dfsg), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2019-19269
gentoo normal CVE-2019-19269: 1 GLSA(s) (202003-35), 1 atom(s) (net-ftp/proftpd); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2019-19269
ubuntu medium CVE-2019-19269 medium priority: Ubuntu including 1 source packages (proftpd-dfsg), 18 status rows across 18 suites (bionic, disco, eoan, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): ignored 10, needs-triage 7, DNE 1. https://ubuntu.com/security/CVE-2019-19269

Affected software / configurations for CVE-2019-19269

Vendor Product Version Raw CPE
proftpd proftpd <= 1.3.5e cpe:2.3:a:proftpd:proftpd:*:*:*:*:*:*:*:*
proftpd proftpd 1.3.6 cpe:2.3:a:proftpd:proftpd:1.3.6:-:*:*:*:*:*:*
proftpd proftpd 1.3.6 cpe:2.3:a:proftpd:proftpd:1.3.6:alpha:*:*:*:*:*:*
proftpd proftpd 1.3.6 cpe:2.3:a:proftpd:proftpd:1.3.6:beta:*:*:*:*:*:*
proftpd proftpd 1.3.6 cpe:2.3:a:proftpd:proftpd:1.3.6:rc1:*:*:*:*:*:*
proftpd proftpd 1.3.6 cpe:2.3:a:proftpd:proftpd:1.3.6:rc2:*:*:*:*:*:*
proftpd proftpd 1.3.6 cpe:2.3:a:proftpd:proftpd:1.3.6:rc3:*:*:*:*:*:*
proftpd proftpd 1.3.6 cpe:2.3:a:proftpd:proftpd:1.3.6:rc4:*:*:*:*:*:*
fedoraproject fedora 30 cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*
fedoraproject fedora 31 cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
debian debian_linux 8.0 cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*

References for CVE-2019-19269

cvelogic Threat Intelligence