CVE-2021-3935

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.

CVSS v3 8.1 HIGH
CVSS v2.0 5.1 MEDIUM

8.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.2 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

5.1^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:H/Au:N/C:P/I:P/A:P

Exploitability : 4.9 / Impact : 6.4

Access Vector NETWORK

Access Complexity HIGH

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
http://www.pgbouncer.org/changelog.html#pgbouncer-116x	Release Notes Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2021251	Issue Tracking Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/02/msg00016.html	Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TNPCV3KRDI5PLLLKADFVIOHACQJLZMLI/

Configurations

Configuration 1 (hide)

cpe:2.3:a:pgbouncer:pgbouncer:*:*:*:*:*:*:*:*

Configuration 2 (hide)

cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*

Configuration 3 (hide)

cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*

Configuration 4 (hide)

cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

History

No history.

Information

Published : 2021-11-22 16:15

Updated : 2023-11-07 03:38

NVD link : CVE-2021-3935

Mitre link : CVE-2021-3935

CVE.ORG link : CVE-2021-3935

JSON object : View

Products Affected

debian

debian_linux

fedoraproject

fedora

pgbouncer

pgbouncer

redhat

enterprise_linux

CWE

CWE-295

Improper Certificate Validation

CWE-89

Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

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