| Query goal: | Find user-defined routines where gen_salt function is used with the number of rounds that is smaller than 12. The number should be adjusted based on the hardware where the system resides. Password hashing should take at least 250 ms. |
| Query type: | Problem detection (Each row in the result could represent a flaw in the design) |
| Query reliability: | Medium (Medium number of false-positive results) |
| Query license: | MIT License |
| Fixing suggestion: | "You should use the maximum number of rounds which is tolerable, performance-wise, in your application. The number of rounds is a slowdown factor, which you use on the basis that under normal usage conditions, such a slowdown has negligible impact for you (the user will not see it, the extra CPU cost does not imply buying a bigger server, and so on). " (Pornin, 2011) |
| Data source: | INFORMATION_SCHEMA+system catalog |
| SQL query: | Click on query to copy it
SELECT pg_namespace.nspname AS routine_schema, pg_proc.proname AS routine_name, pg_get_function_identity_arguments(pg_proc.oid) AS parameters, CASE WHEN pg_proc.prokind='f' THEN 'FUNCTION' WHEN pg_proc.prokind='p' THEN 'PROCEDURE' WHEN pg_proc.prokind='w' THEN 'WINDOW FUNCTION' END AS routine_type, regexp_replace( regexp_replace(pg_get_functiondef(pg_proc.oid),'<','<','g'),'[\r\n]','<br>','g') AS routine_src FROM pg_catalog.pg_proc, pg_catalog.pg_namespace WHERE pg_proc.pronamespace = pg_namespace.oid AND pg_proc.prokind<>'a' AND pg_proc.proname NOT IN ('f_assume_you_must_use_files', 'f_check_format_comma_separated_list', 'f_check_password', 'f_default_value_with_no_match') AND pg_namespace.nspname NOT IN (SELECT schema_name FROM INFORMATION_SCHEMA.schemata WHERE schema_name<>'public' AND schema_owner='postgres' AND schema_name IS NOT NULL) AND trim(translate(substring(substring(pg_get_functiondef(pg_proc.oid), 'gen_salt[(][^\)]+[)]'),'[0-9]+[[:space:]]*[)]'),')',''))::int<12 ORDER BY routine_schema, routine_name, parameters; |
| Collection name | Collection description |
|---|---|
| Find problems automatically | Queries, that results point to problems in the database. Each query in the collection produces an initial assessment. However, a human reviewer has the final say as to whether there is a problem or not . |
| Category name | Category description |
|---|---|
| Does not work in some earlier PostgreSQL version | Queries of this category provide information that was not available in some earlier PostgreSQL version |
| Security | Queries of this category provide information about the security measures. |