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CVE-2021-3935

Published: 22 November 2021

When PgBouncer is configured to use "cert" authentication, a man-in-the-middle attacker can inject arbitrary SQL queries when a connection is first established, despite the use of TLS certificate verification and encryption. This flaw affects PgBouncer versions prior to 1.16.1.

Priority

Medium

Cvss 3 Severity Score

8.1

Score breakdown

Status

Package Release Status
pgbouncer
Launchpad, Ubuntu, Debian
bionic Needs triage

focal Needs triage

hirsute Ignored
(end of life)
impish Ignored
(end of life)
trusty Ignored
(end of standard support)
upstream
Released (1.16.1)
xenial Needs triage

kinetic Ignored
(end of life, was needs-triage)
jammy Needs triage

lunar Not vulnerable
(1.16.1-1ubuntu2)
mantic Not vulnerable
(1.16.1-1ubuntu2)

Severity score breakdown

Parameter Value
Base score 8.1
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H