Ensure per-account connection limits are used

低级别 1自动化postgres

说明

Limiting concurrent connections to a PostgreSQL server can be used to reduce the risk of Denial of Service (DoS) attacks. Counts login roles with an unlimited (-1) connection limit. Runs psql as ${PGUSER:-postgres} against ${PGDATABASE:-postgres}; set PGHOST/PGPORT and use ~/.pgpass (not PGPASSWORD, see 1.6/1.7) when peer authentication is not available.

检查方式

审计方法: SQL 查询

sql_query

out=$(psql -X -U "${PGUSER:-postgres}" -d "${PGDATABASE:-postgres}" -tAc "SELECT count(*) FROM pg_roles WHERE rolname !~ '^pg_' AND rolcanlogin AND rolconnlimit = -1" 2>/dev/null) || exit 1; printf '%s\n' "$out"

预期输出: 0

修复方式

修复方法: 操作指南或基础设施补丁

ALTER ROLE <dbuser> CONNECTION LIMIT <reasonable concurrent connection count>; for every login role reported (SELECT rolname FROM pg_roles WHERE rolcanlogin AND rolconnlimit = -1).

属性

操作系统: 任意
标签: postgresdatabaseauthentication
参考: CIS PostgreSQL 18 Benchmark v1.0.0 - 5.5 Ensure per-account connection limits are used

检查本机

请在您有权审计的机器上运行此命令。扫描为只读操作。

shell

tmaegis scan --target postgres