SB2025070341 - Ubuntu update for pcs
Published: July 3, 2025
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 4 secuirty vulnerabilities.
1) Information disclosure (CVE-ID: CVE-2018-1086)
The vulnerability allows a remote attacker to obtain potentially sensitive information.
The weakness exists in the REST interface due to debug parameter removal bypass. A remote attacker can gain access to potentially sensitive information.
2) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2022-2735)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to incorrect permissions set on a Unix socket used for internal communication between PCS daemons. A local user can obtain the authentication token for hacluster and gain control over the cluster managed by pcs.
3) Improper Authentication (CVE-ID: CVE-2022-1049)
The vulnerability allows a remote user to bypass authentication process.
The vulnerability exists due to pcs daemon allows expired accounts, and accounts with expired passwords to login when using PAM authentication. A remote user with an expired account can still access to the application.
4) Stored cross-site scripting (CVE-ID: CVE-2017-2661)
The disclosed vulnerability allows a remote user to perform cross-site scripting (XSS) attacks.
The vulnerability exists due to insufficient sanitization of user-supplied data passed via the Node name field when creating new cluster or adding existing cluster. A remote user can inject and execute arbitrary HTML and script code in user's browser in context of vulnerable website.
Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.
Remediation
Install update from vendor's website.