Bug 7662 - [Anolis OS 8] Bugfix for CVE-2023-5870
Summary: [Anolis OS 8] Bugfix for CVE-2023-5870
Status: NEW
Alias: None
Product: Anolis OS 8
Classification: Anolis OS
Component: BaseOS Packages (show other bugs) BaseOS Packages
Version: 8.6
Hardware: All Linux
: P4-Low S4-trivial
Target Milestone: ---
Assignee: Jacob
QA Contact: shuming
URL:
Whiteboard:
Keywords: CVE
Depends on:
Blocks:
 
Reported: 2023-11-30 10:29 UTC by 小龙
Modified: 2023-11-30 10:29 UTC (History)
0 users

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Description 小龙 admin 2023-11-30 10:29:14 UTC 
Description:
The documentation says the pg_signal_backend role cannot signal "a backend owned by a superuser".  On the contrary, it can signal background workers, including the logical replication launcher.  It can signal autovacuum workers and the autovacuum launcher.  Signaling autovacuum workers and those two launchers provides no meaningful exploit, so exploiting this vulnerability requires a non-core extension with a less-resilient background worker.  For example, a non-core background worker that does not auto-restart would experience a denial of service with respect to that particular background worker.

The PostgreSQL project thanks Hemanth Sandrana and Mahendrakar Srinivasarao for reporting this problem.

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