postgres

Commit Graph

Author	SHA1	Message	Date
Joe Conway	4f66c93f61	Update sepgsql to add mandatory access control for TRUNCATE Use SELinux "db_table: { truncate }" to check if permission is granted to TRUNCATE. Update example SELinux policy to grant needed permission for TRUNCATE. Add new regression test to demonstrate a positive and negative cases. Test will only be run if the loaded SELinux policy has the "db_table: { truncate }" permission. Makes use of recent commit which added object TRUNCATE hook. Patch by Yuli Khodorkovskiy with minor editorialization by me. Not back-patched because the object TRUNCATE hook was not. Author: Yuli Khodorkovskiy Reviewed-by: Joe Conway Discussion: https://postgr.es/m/CAFL5wJcomybj1Xdw7qWmPJRpGuFukKgNrDb6uVBaCMgYS9dkaA%40mail.gmail.com	6 years ago
Tom Lane	f5a4ab23e4	Fix contrib/sepgsql test policy to work with latest SELinux releases. As of Fedora 30, it seems that the system-provided macros for setting up user privileges in SELinux policies don't grant the ability to read /etc/passwd, as they formerly did. This restriction breaks psql (which tries to use getpwuid() to obtain the user name it's running under) and thereby the contrib/sepgsql regression test. Add explicit specifications that we need the right to read /etc/passwd. Mike Palmiotto, per a report from me. Back-patch to all supported branches. Discussion: https://postgr.es/m/23856.1563381159@sss.pgh.pa.us	7 years ago
Joe Conway	794e2558be	Fix sepgsql regression tests. The regression tests for sepgsql were broken by changes in the base distro as-shipped policies. Specifically, definition of unconfined_t in the system default policy was changed to bypass multi-category rules, which the regression test depended on. Fix that by defining a custom privileged domain (sepgsql_regtest_superuser_t) and using it instead of system's unconfined_t domain. The new sepgsql_regtest_superuser_t domain performs almost like the current unconfined_t, but restricted by multi-category policy as the traditional unconfined_t was. The custom policy module is a self defined domain, and so should not be affected by related future system policy changes. However, it still uses the unconfined_u:unconfined_r pair for selinux-user and role. Those definitions have not been changed for several years and seem less risky to rely on than the unconfined_t domain. Additionally, if we define custom user/role, they would need to be manually defined at the operating system level, adding more complexity to an already non-standard and complex regression test. Back-patch to 9.3. The regression tests will need more work before working correctly on 9.2. Starting with 9.2, sepgsql has had dependencies on libselinux versions that are only available on newer distros with the changed set of policies (e.g. RHEL 7.x). On 9.1 sepgsql works fine with the older distros with original policy set (e.g. RHEL 6.x), and on which the existing regression tests work fine. We might want eventually change 9.1 sepgsql regression tests to be more independent from the underlying OS policies, however more work will be needed to make that happen and it is not clear that it is worth the effort. Kohei KaiGai with review by Adam Brightwell and me, commentary by Stephen, Alvaro, Tom, Robert, and others.	10 years ago
Robert Haas	f8a54e936b	sepgsql: Enforce db_procedure:{execute} permission. To do this, we add an additional object access hook type, OAT_FUNCTION_EXECUTE. KaiGai Kohei	13 years ago
Robert Haas	e965e6344c	sepgsql: Enforce db_schema:search permission. KaiGai Kohei, with comment and doc wordsmithing by me	13 years ago
Robert Haas	0f05840bf4	Allow sepgsql labels to depend on object name. The main change here is to call security_compute_create_name_raw() rather than security_compute_create_raw(). This ups the minimum requirement for libselinux from 2.0.99 to 2.1.10, but it looks like most distributions will have picked that up before 9.3 is out. KaiGai Kohei	13 years ago
Robert Haas	523176cbf1	sepgsql_setcon(). This is intended as infrastructure to allow sepgsql to cooperate with connection pooling software, by allowing the effective security label to be set for each new connection. KaiGai Kohei, reviewed by Yeb Havinga.	14 years ago
Robert Haas	a64bdf5f65	Allow sepgsql regression tests to be run from a user homedir. KaiGai Kohei, with some changes by me.	15 years ago
Robert Haas	595a441ae9	Add missing check on invocation of trusted procedures. KaiGai Kohei	15 years ago
Robert Haas	968bc6fac9	sepgsql, an SE-Linux integration for PostgreSQL This is still pretty rough - among other things, the documentation needs work, and the messages need a visit from the style police - but this gets the basic framework in place. KaiGai Kohei	15 years ago

10 Commits (67a8b49e96caf0782b556521c8d6650e78f2d88e)