Bug#946345: proftpd-dfsg: CVE-2019-19269

[Salvatore Bonaccorso]

Source: proftpd-dfsg
Version: 1.3.6b-1
Severity: important
Tags: security upstream
Forwarded: https://github.com/proftpd/proftpd/issues/861
Control: found -1 1.3.6-4+deb10u2
Control: found -1 1.3.5b-4+deb9u2
Control: found -1 1.3.5b-4+deb9u1

Hi,

The following vulnerability was published for proftpd-dfsg.

CVE-2019-19269[0]:
| 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.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2019-19269
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-19269
[1] https://github.com/proftpd/proftpd/issues/861

Regards,
Salvatore