SB2020040121 - Red Hat Enterprise Linux 7 update for cups
Published: April 1, 2020
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 vulnerabilities.
1) Privilege escalation (CVE-ID: CVE-2018-4180)
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:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local attacker to gain elevated privileges on the target system.
The vulnerability exists due to unspecified flaw. A local attacker with access to cupsctl can set an environment variable and gain elevated privileges.
2) Information disclosure (CVE-ID: CVE-2018-4181)
CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local attacker to obtain potentially sensitive information on the target system.
The vulnerability exists due to unspecified flaw. A local attacker can manipulate cupsd.conf and read arbitrary files with root privileges.
3) Cross-site request forgery (CVE-ID: CVE-2018-4700)
CWE-ID: CWE-352 - Cross-Site Request Forgery (CSRF)
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote attacker to perform CSRF attack.
The weakness exists in the CUPS printing server due to insufficient CSRF protections. A remote attacker can create a specially crafted HTML page or URL, trick the victim into visiting it, gain access to the system and perform arbitrary actions.
Remediation
Install update from vendor's website.