CVE-2017-18190 Information

Description

A localhost.localdomain whitelist entry in valid_host() in scheduler/client.c in CUPS before 2.2.2 allows remote attackers to execute arbitrary IPP commands by sending POST requests to the CUPS daemon in conjunction with DNS rebinding. The localhost.localdomain name is often resolved via a DNS server (neither the OS nor the web browser is responsible for ensuring that localhost.localdomain is 127.0.0.1).

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Reference

https://bugs.chromium.org/p/project-zero/issues/detail?id=1048 https://github.com/apple/cups/commit/afa80cb2b457bf8d64f775bed307588610476c41 https://lists.debian.org/debian-lts-announce/2018/02/msg00023.html https://lists.debian.org/debian-lts-announce/2018/07/msg00003.html https://usn.ubuntu.com/3577-1/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

HIGH

Base Score

NONE

Base Severity

7.5