Medium
Security advisory
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.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2019-19269
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 10:38 UTC · Revision 1
Source evidence
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.
osv:CVE-2019-19269
Complete source record
{
"id": "25ce513300d7fadf704b9dd9c5c3f9a6e59165659b347ba5e9fcb9cc5e911e1d",
"url": "https://osv.dev/vulnerability/CVE-2019-19269",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2019-19269",
"summary": "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.",
"evidence": "osv:CVE-2019-19269",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2019-19269",
"aliases": [
"CVE-2019-19269"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/proftpd/proftpd",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"last_affected": "46a4c089eec7dfc9b7c168c98bdb06371eb694ef"
},
{
"introduced": "14f155e2f194f75d05a1656d13f4228257ba3091"
},
{
"last_affected": "e280a27aae2b8ee5266abec70992cbb607c1bc20"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:proftpd:proftpd:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"last_affected": "1.3.5e"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:proftpd:proftpd:1.3.6:-:*:*:*:*:*:*",
"range": [
{
"introduced": "1.3.6-NA"
},
{
"last_affected": "1.3.6-NA"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:proftpd:proftpd:1.3.6:rc1:*:*:*:*:*:*",
"range": [
{
"introduced": "1.3.6-rc1"
},
{
"last_affected": "1.3.6-rc1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:proftpd:proftpd:1.3.6:rc2:*:*:*:*:*:*",
"range": [
{
"introduced": "1.3.6-rc2"
},
{
"last_affected": "1.3.6-rc2"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:proftpd:proftpd:1.3.6:rc3:*:*:*:*:*:*",
"range": [
{
"introduced": "1.3.6-rc3"
},
{
"last_affected": "1.3.6-rc3"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:proftpd:proftpd:1.3.6:rc4:*:*:*:*:*:*",
"range": [
{
"introduced": "1.3.6-rc4"
},
{
"last_affected": "1.3.6-rc4"
}
],
"source": "CPE_STRING"
}
]
}
}
],
"versions": [
"1.3.6-NA",
"1.3.6-rc1",
"1.3.6-rc2",
"1.3.6-rc3",
"1.3.6-rc4",
"v1.3.5e",
"v1.3.5d",
"v1.3.6rc4",
"v1.3.5c",
"v1.3.6rc3",
"v1.3.5b",
"v1.3.6rc2",
"v1.3.5a",
"v1.3.6rc1"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-19269.json"
}
}
],
"modified": "2026-10-20T10:50:51.117315470Z",
"provider": "osv",
"references": [
"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OGBBCPLJSDPFG5EI5P5G7P4KEX7YSD5G/",
"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QR65XUHPCRU3NXTSFVF2J4GWRIHC7AHW/",
"https://www.oracle.com/security-alerts/cpuapr2020.html",
"https://lists.debian.org/debian-lts-announce/2019/11/msg00039.html",
"https://security.gentoo.org/glsa/202003-35",
"https://github.com/proftpd/proftpd/issues/861"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*"
],
"vendor_product": "debian:debian_linux",
"extracted_events": [
{
"range": [
{
"introduced": "8.0"
},
{
"last_affected": "8.0"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*",
"cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*"
],
"vendor_product": "fedoraproject:fedora",
"extracted_events": [
{
"range": [
{
"introduced": "30"
},
{
"last_affected": "30"
},
{
"introduced": "31"
},
{
"last_affected": "31"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:a:proftpd:proftpd:1.3.6:alpha:*:*:*:*:*:*",
"cpe:2.3:a:proftpd:proftpd:1.3.6:beta:*:*:*:*:*:*"
],
"vendor_product": "proftpd:proftpd",
"extracted_events": [
{
"range": [
{
"introduced": "1.3.6-alpha"
},
{
"last_affected": "1.3.6-alpha"
},
{
"introduced": "1.3.6-beta"
},
{
"last_affected": "1.3.6-beta"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2019-19269",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 382250,
"published_at": "2019-11-30T23:15:18.223+00:00"
}