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.

• CWE-476

• http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00009.html
• https://github.com/proftpd/proftpd/issues/861Patch, Third Party Advisory
• https://lists.debian.org/debian-lts-announce/2019/11/msg00039.htmlThird Party Advisory
• 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://security.gentoo.org/glsa/202003-35
• https://www.oracle.com/security-alerts/cpuapr2020.html
• http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00009.html
• https://github.com/proftpd/proftpd/issues/861Patch, Third Party Advisory
• https://lists.debian.org/debian-lts-announce/2019/11/msg00039.htmlThird Party Advisory
• 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://security.gentoo.org/glsa/202003-35
• https://www.oracle.com/security-alerts/cpuapr2020.html

Published

Nov 30, 2019

Last Modified

Jun 17, 2026

Status

Modified

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