CVE-2020-21469

MEDIUM

Postgresql - Buffer Overflow

Title source: rule

Description

An issue was discovered in PostgreSQL 12.2 allows attackers to cause a denial of service via repeatedly sending SIGHUP signals. NOTE: this is disputed by the vendor because untrusted users cannot send SIGHUP signals; they can only be sent by a PostgreSQL superuser, a user with pg_reload_conf access, or a user with sufficient privileges at the OS level (the postgres account or the root account).

References (3)

[Exploit, Mailing List, Vendor Advisory] https://www.postgresql.org/message-id/CAA8ZSMqAHDCgo07hqKoM5XJaoQy6Vv76O7966agez4ffyQktkA%40mail.gmail.com

[Mailing List] https://www.postgresql.org/message-id/flat/CAA8ZSMqAHDCgo07hqKoM5XJaoQy6Vv76O7966agez4ffyQktkA%40mail.gmail.com

[Product] https://www.postgresql.org/support/security/

Scores

CVSS v3 4.4

EPSS 0.0003

EPSS Percentile 6.8%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

Classification

CWE

CWE-120

Status published

Affected Products (1)

postgresql/postgresql

Timeline

Published Aug 22, 2023

Tracked Since Feb 18, 2026