An issue was discovered in tlsverifycrl in ProFTPD before 1.3.6. Direct dereference of a NULL pointer (a variable initialized to NULL) leads to a crash when validating the certificate of a client connecting to the server in a TLS client/server mutual-authentication setup.
{ "binaries": [ { "binary_version": "1.3.5a-1ubuntu0.1", "binary_name": "proftpd-basic" }, { "binary_version": "1.3.5a-1ubuntu0.1", "binary_name": "proftpd-dev" }, { "binary_version": "1.3.5a-1ubuntu0.1", "binary_name": "proftpd-mod-geoip" }, { "binary_version": "1.3.5a-1ubuntu0.1", "binary_name": "proftpd-mod-ldap" }, { "binary_version": "1.3.5a-1ubuntu0.1", "binary_name": "proftpd-mod-mysql" }, { "binary_version": "1.3.5a-1ubuntu0.1", "binary_name": "proftpd-mod-odbc" }, { "binary_version": "1.3.5a-1ubuntu0.1", "binary_name": "proftpd-mod-pgsql" }, { "binary_version": "1.3.5a-1ubuntu0.1", "binary_name": "proftpd-mod-sqlite" } ] }
{ "binaries": [ { "binary_version": "1.3.5e-1build1", "binary_name": "proftpd-basic" }, { "binary_version": "1.3.5e-1build1", "binary_name": "proftpd-dev" }, { "binary_version": "1.3.5e-1build1", "binary_name": "proftpd-mod-geoip" }, { "binary_version": "1.3.5e-1build1", "binary_name": "proftpd-mod-ldap" }, { "binary_version": "1.3.5e-1build1", "binary_name": "proftpd-mod-mysql" }, { "binary_version": "1.3.5e-1build1", "binary_name": "proftpd-mod-odbc" }, { "binary_version": "1.3.5e-1build1", "binary_name": "proftpd-mod-pgsql" }, { "binary_version": "1.3.5e-1build1", "binary_name": "proftpd-mod-sqlite" } ] }