The karo gem through 2.5.2 for Ruby allows Remote command injection via the host field.
A flaw in db.rb
is triggered when handling metacharacters. This may allow a remote attacker to execute arbitrary commands.
In particular lines 76 and 95 (as of 2014-06-01
) pass unsanitized user supplied input to the command line.
73- host = "{@configuration["user"]}@{@configuration["host"]}"
74- cmd = "ssh #{host} cat {server_db_config_file}"
75-
76: server_db_config_output = `{cmd}`
79-
--
89- def drop_and_create_local_database(local_db_config)
90- command = case local_db_config["adapter"]
91- when "mysql2"
93- when "postgresql"
95- dropdb -h #{local_db_config["host"]} -U #{local_db_config["username"]} --if-exists #{local_db_config["database"]}
If this gem is used in the context of a rails application malicious input could lead to remote command injection. As of version 2.5.2 the affected code lines have not changed.
www.vapid.dhs.org/advisories/karo-2.3.8.html
www.vapidlabs.com/advisory.php?v=63
github.com/rahult/karo
github.com/rahult/karo/blob/master/lib/karo/db.rb#L76
github.com/rahult/karo/blob/master/lib/karo/db.rb#L95
github.com/rubysec/ruby-advisory-db/blob/master/gems/karo/CVE-2014-10075.yml
nvd.nist.gov/vuln/detail/CVE-2014-10075