CVE-2022-2735

pcs: obtaining an authentication token for hacluster user could lead to privilege escalation

Severity Score

7.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A vulnerability was found in the PCS project. This issue occurs due to incorrect permissions on a Unix socket used for internal communication between PCS daemons. A privilege escalation could happen by obtaining an authentication token for a hacluster user. With the "hacluster" token, this flaw allows an attacker to have complete control over the cluster managed by PCS.

Se ha encontrado una vulnerabilidad en el proyecto PCS. Este problema es producido debido a unos permisos incorrectos en un socket Unix usado para la comunicación interna entre los demonios de PCS. Una escalada de privilegios podría ocurrir al obtener un token de autenticación para un usuario "hacluster". Con el token "hacluster", este fallo permite a un atacante tener el control completo del cluster administrado por PCS.

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2022-08-09 CVE Reserved
2022-09-01 CVE Published
2023-03-08 EPSS Updated
2024-08-03 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-276: Incorrect Default Permissions

CAPEC

References (4)

URL	Tag	Source
https://www.openwall.com/lists/oss-security/2022/09/01/4	Mailing List

URL	Date	SRC

URL	Date	SRC
https://bugzilla.redhat.com/show_bug.cgi?id=2116815	2022-09-05

URL	Date	SRC
https://access.redhat.com/security/cve/CVE-2022-2735	2022-09-05
https://www.debian.org/security/2022/dsa-5226	2024-01-25

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Clusterlabs Search vendor "Clusterlabs"		Pcs Search vendor "Clusterlabs" for product "Pcs"				>= 0.10.5 <= 0.11.3 Search vendor "Clusterlabs" for product "Pcs" and version " >= 0.10.5 <= 0.11.3"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				11.0 Search vendor "Debian" for product "Debian Linux" and version "11.0"		-		Affected