Command injection in CUPS - CVE-2017-18190

Vulnerability identifier: #VU10942

CSH Severity: Low

CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2017-18190

CWE-ID: CWE-77

Exploitation vector: Remote access

Exploit availability: No public exploit available

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

The weakness exists in a localhost.localdomain whitelist entry in valid_host() in scheduler/client.c due to the localhost.localdomain name is often resolved via a DNS server. A remote attacker can send specially crafted POST requests to the CUPS daemon in conjunction with DNS rebinding, inject and execute arbitrary IPP commands.

CUPS
cups (Alpine package)
cups (Red Hat package)
Red Hat Enterprise Linux Server
Red Hat Enterprise Linux Workstation
Red Hat Enterprise Linux Desktop
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Power, big endian
Red Hat Enterprise Linux for Scientific Computing
Red Hat Enterprise Linux for Power, little endian
SUSE Linux
Ubuntu
Red Hat OpenShift Container Platform

Update to version 2.2.2.

cups (Alpine package) - update to 2.1.3-r2
cups (Red Hat package) - update to 1.6.3-51.el7
Red Hat OpenShift Container Platform - update to 4.3.40

• https://github.com/apple/cups/commit/afa80cb2b457bf8d64f775bed307588610476c41

• Ubuntu update for CUPS
• OpenSUSE Linux update for cups
• SUSE Linux update for cups
• Command injection in cups (Alpine package)
• Red Hat Enterprise Linux 7 update for cups
• Multiple vulnerabilities in Red Hat OpenShift Container Platform 4.3