SB2025070341 - Ubuntu update for pcs
Published: July 3, 2025
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 4 vulnerabilities.
1) Information disclosure (CVE-ID: CVE-2018-1086)
CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
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)
CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:U/U:Clear
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)
CWE-ID: CWE-287 - Improper Authentication
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
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)
CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear
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.