VDB-208015 · CVE-2022-2735 · Nessus 241351

PCS Unix Socket default permission

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.6	$0-$5k	0.00

Summaryinfo

A vulnerability has been found in PCS and classified as critical. Impacted is an unknown function of the component Unix Socket Handler. This manipulation causes default permission. This vulnerability is registered as CVE-2022-2735. No exploit is available.

Detailsinfo

A vulnerability was found in PCS (the affected version unknown). It has been declared as critical. Affected by this vulnerability is an unknown part of the component Unix Socket Handler. The manipulation with an unknown input leads to a default permission vulnerability. The CWE definition for the vulnerability is CWE-276. During installation, installed file permissions are set to allow anyone to modify those files. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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.

The weakness was published 09/07/2022. It is possible to read the advisory at access.redhat.com. This vulnerability is known as CVE-2022-2735 since 08/09/2022. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1222 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 241351 (Ubuntu 16.04 LTS / 20.04 LTS / 22.04 LTS : pcs vulnerabilities (USN-7614-1)), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Tenable (241351). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.6
VulDB Meta Temp Score: 6.6

VulDB Base Score: 5.5
VulDB Temp Score: 5.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Default permission
CWE: CWE-276 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
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Nessus ID: 241351
Nessus Name: Ubuntu 16.04 LTS / 20.04 LTS / 22.04 LTS : pcs vulnerabilities (USN-7614-1)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

08/09/2022 🔍
09/07/2022 +29 days 🔍
09/07/2022 +0 days 🔍
07/04/2025 +1031 days 🔍

Sourcesinfo

Advisory: access.redhat.com
Status: Confirmed

CVE: CVE-2022-2735 (🔍)
GCVE (CVE): GCVE-0-2022-2735
GCVE (VulDB): GCVE-100-208015

Entryinfo

Created: 09/07/2022 16:49
Updated: 07/04/2025 19:56
Changes: 09/07/2022 16:49 (36), 10/14/2022 07:49 (11), 07/04/2025 19:56 (16)
Complete: 🔍
Cache ID: 216::103