| Name | CVE-2019-19269 |
| 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-2018-1 |
| Debian Bugs | 946345 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| proftpd-dfsg (PTS) | buster | 1.3.6-4+deb10u6 | fixed |
| buster (security) | 1.3.6-4+deb10u4 | fixed |
| bullseye | 1.3.7a+dfsg-12+deb11u2 | fixed |
| bookworm | 1.3.8+dfsg-4+deb12u3 | fixed |
| trixie | 1.3.8.b+dfsg-1 | fixed |
| sid | 1.3.8.b+dfsg-2 | fixed |
The information below is based on the following data on fixed versions.
Notes
https://github.com/proftpd/proftpd/issues/861
https://github.com/proftpd/proftpd/commit/81cc5dce4fc0285629a1b08a07a109af10c208dd (master)
https://github.com/proftpd/proftpd/commit/be8e1687819cb665359bd62b4c896ff4b1a09c3f (1.3.6 branch)