pgpool-II 4.6.3 Documentation
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# A.25. Release 4.4.2

> Release Date: 2023-01-23

## A.25.1. Overview

This release contains a security fix.

If following conditions are all met, the password of wd_lifecheck_user is exposed by SHOW POOL STATUS command. The command can be executed by any user who can connect to Pgpool-II. (CVE-2023-22332)

- Version 3.3 or later.

- use_watchdog is `on`.

- wd_lifecheck_method is `query`.

- A plain text password is set to wd_lifecheck_password.

In this case it is strongly recommended to upgrade to this version (we do not expose wd_lifecheck_password in show pool_status command any more), or use one of following workarounds.

Workarounds for 4.0.x to 4.4.x users:

- Disable watchdog. Set use_watchdog to `off`.

- Change wd_lifecheck_method to `heartbeat`.

- Set an empty string to wd_lifecheck_password. This will use password in the `pool_passwd` file.

- Set an AES encrypted password to wd_lifecheck_password.

In any case we recommend to change wd_lifecheck_password in PostgreSQL.

Workarounds for 3.0.x to 3.7.x users:

- Disable watchdog. Set use_watchdog to `off`.

- Change wd_lifecheck_method to `heartbeat`.

In any case we recommend to change wd_lifecheck_password in PostgreSQL.

Please note that Pgpool-II 3.7.x or before are end of life and no minor updates are provided for those versions.

## A.25.2. Changes

- Do not expose wd_lifecheck_password in SHOW POOL STATUS, pcp_pool_status and pgpool_adm_pcp_pool_status commands. (CVE-2023-22332) (Bo Peng)

- Change the default value for wd_lifecheck_password to empty string as documented. (Bo Peng)

## A.25.3. Bug fixes

- Fixed pgpool_adm: pcp_pool_status error when this function is used with PostgreSQL 15. (Tatsuo Ishii)

  pcp_pool_status actually returns SETOF record, but it was declared as "returns record". This sloppiness had been tolerated until PostgreSQL 14 but PostgreSQL 15 becomes more strict. To fix this we need to change the return type of pcp_pool_status from "RETURNS record" to "RETURNS SETOF record".

  And the pgpool_adm extension version is bumped to 1.5.

- Fix integer overflow in streaming replication check. (Tatsuo Ishii)

  When delay_threshold_by_time is enabled and the replication delay is about more than 36 minutes, an integer overflow error was logged and replication check failed.

- Fix compiler warning in `pgpool-regclass.c`. (Florian Weimer, Tatsuo Ishii)

- Fix Uninitialized variables pointed out by Coverity. (Takuma Hoshiai)

## A.25.4. Documents

- Doc: Enhance and fix some mistakes in Configurations to use shared memory chapter. (Tatsuo Ishii)

- Doc: Enhance explanation of delay_threshold_by_time. (zam bak, Tatsuo Ishii)

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