SB2018041039 - Red Hat update for pcs
Published: April 10, 2018 Updated: April 13, 2018
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 vulnerabilities.
1) Privilege escalation (CVE-ID: CVE-2018-1079)
CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote authenticated attacker to gain elevated privileges on the target system.
The weakness exists in the REST interface of the pcsd service due improper sanitization of the file name from the /remote/put_file query. A remote attacker can create or overwrite arbitrary files with arbitrary data outside of the /etc/booth directory, in the context of the pcsd process and gain root privileges.
2) 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.
3) Information disclosure (CVE-ID: CVE-2018-1000119)
CWE-ID: CWE-208 - Information Exposure Through Timing Discrepancy
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 unauthenticated attacker to obtain potentially sensitive information on the target system.
The weakness exists due to insufficient security restrictions. A remote attacker can conduct a timing attack and gain access to potentially sensitive information, such as signatures.
Remediation
Install update from vendor's website.