CVE-2019-19269: Null Pointer Dereference
An issue was discovered in tlsverifycrl in ProFTPD through 1.3.6b. A dereference of a NULL pointer may occur. This pointer is returned by the OpenSSL skX509REVOKEDvalue() 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.
Affected Software
Remediation
Patch Available
Event History
Frequently Asked Questions
What is CVE-2019-19269?
CVE-2019-19269 is a vulnerability discovered in tls_verify_crl in ProFTPD through 1.3.6b.
How severe is CVE-2019-19269?
CVE-2019-19269 has a severity rating of 4.9, which is considered medium.
Which software versions are affected by CVE-2019-19269?
CVE-2019-19269 affects ProFTPD versions 1.3.5e, 1.3.6, 1.3.6-alpha, 1.3.6-beta, 1.3.6-rc1, 1.3.6-rc2, 1.3.6-rc3.
How can I fix CVE-2019-19269?
To fix CVE-2019-19269, you should update ProFTPD to a version that is not affected by the vulnerability.
Where can I find more information about CVE-2019-19269?
You can find more information about CVE-2019-19269 in the references provided: 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