SB2018080804 - OpenSUSE Linux update for cups

Description

This security bulletin contains information about 5 secuirty vulnerabilities.

1) Improper input validation (CVE-ID: CVE-2017-18248)

The vulnerability allows a remote unauthenticated attacker to cause DoS condition on the target system.

The weakness exists in the add_job function due to insufficient validation of usernames. A remote attacker can send print jobs with an invalid username and cause the service to crash.

2) Privilege escalation (CVE-ID: CVE-2018-4180)

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.

3) Information disclosure (CVE-ID: CVE-2018-4181)

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.

4) Security restrictions bypass (CVE-ID: CVE-2018-4182)

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.

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

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

• https://lists.opensuse.org/opensuse-security-announce/2018-08/msg00022.html