SB2018072328 - Fedora 27 update for cups

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Main Vulnerability Database SB2018072328

SB2018072328 - Fedora 27 update for cups

Published: July 23, 2018 Updated: April 24, 2025

Security Bulletin ID SB2018072328
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 4
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 4 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) Security restrictions bypass (CVE-ID: CVE-2018-4182)

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a remote attacker to bypass security restrictions on the target system.

The vulnerability exists due to an error in CUPS' profile creation. A remote attacker with sandboxed root access can bypass security restrictions and execute backends without a sandbox profile.


4) Command injection (CVE-ID: CVE-2018-4183)

CWE-ID: CWE-77 - Command injection

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a remote attacker to execute arbitrary commands on the target system.

The vulnerability exists due to command injection. A remote attacker with sandboxed root access can modify /etc/cups/cups-files.conf, inject and execute arbitrary commands as unsandboxed root.


Remediation

Install update from vendor's website.

References