CVE-2019-19269 Information
Share on:Description
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.
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Reference
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00009.html https://github.com/proftpd/proftpd/issues/861 https://lists.debian.org/debian-lts-announce/2019/11/msg00039.html https://lists.fedoraproject.org/archives/list/[email protected]/message/OGBBCPLJSDPFG5EI5P5G7P4KEX7YSD5G/ https://lists.fedoraproject.org/archives/list/[email protected]/message/QR65XUHPCRU3NXTSFVF2J4GWRIHC7AHW/ https://security.gentoo.org/glsa/202003-35 https://www.oracle.com/security-alerts/cpuapr2020.html
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction Required
HIGH
Scope
NONE
Confidentiality Impact
UNCHANGED
Integrity Impact
NONE
Availability Impact
NONE
Base Score
HIGH
Base Severity
4.9