Red Hat Bugzilla – Bug 883947
sssd: potential LDAP filter injection issues
Last modified: 2015-07-15 10:55:28 EDT
I went through the sssd 1.9.2 source code and identified potential LDAP filter injection issues:
src/providers/ldap/ldap_auth.c: get_user_dn() username
src/providers/ldap/sdap_sudo.c: sdap_sudo_build_host_filter() hostnames, ip_addr
src/providers/ldap/sdap_async_groups.c: sdap_process_missing_member_2307() member_name
src/providers/ldap/ldap_id_cleanup.c: cleanup_groups() dn
src/providers/ldap/ldap_id_cleanup.c: netgr_translate_members_send() dn_item->dn
src/providers/ipa/ipa_hosts.c: ipa_host_info_send() hostname
src/tools/sss_cache.c: init_context() user, group, netgroup, map
src/tools/sss_groupshow.c: group_show_trim_memberof() memberofs, dn
src/db/sysdb_ssh.c: sysdb_get_ssh_host() name
src/db/sysdb_ops.c: sysdb_add_user() name, alias_el->values[i].data
src/db/sysdb_ops.c: sysdb_delete_user() name
src/db/sysdb_sudo.c: sysdb_get_sudo_filter() username, groupnames
(Format is file name, function name, variable name)
The situation is a bit like SQL injection, except that LDAP filters should not be as powerful as SQL statements, so this is probably just a correctness issue and not a security problem (unless it allows altering the results of queries in interesting ways). An interface which separates query parameters from the query structure would be desirable as a replacement for all this string concatenation.
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We are tracking this issue upstream, currently slated for 1.13, so I'll move the version to rawhide (normally I'd close/upstream, but apparently there is some tracker blocked by this bz)
This bug appears to have been reported against 'rawhide' during the Fedora 23 development cycle.
Changing version to '23'.
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cycle bugs. We are very sorry. It will help us with cleanup during Fedora 23 End Of Life. Thank you.)
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