MitreCVELIST:CVE-2019-19269CVE-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.
References
lists.opensuse.org/opensuse-security-announce/2020-01/msg00009.html
github.com/proftpd/proftpd/issues/861
lists.debian.org/debian-lts-announce/2019/11/msg00039.html
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OGBBCPLJSDPFG5EI5P5G7P4KEX7YSD5G/
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QR65XUHPCRU3NXTSFVF2J4GWRIHC7AHW/
security.gentoo.org/glsa/202003-35
www.oracle.com/security-alerts/cpuapr2020.html
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