CVE-2017-18190

cups: DNS rebinding attacks via incorrect whitelist

Severity Score

7.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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).

Una entrada en la lista blanca localhost.localdomain en valid_host() en scheduler/client.c en CUPS, en versiones anteriores a la 2.2.2, permite que atacantes remotos ejecuten comandos IPP arbitrarios mediante el envío de peticiones POST al demonio CUPS junto con reenlaces DNS. El nombre localhost.localdomain suele resolverse mediante un servidor DNS (ni el sistema operativo ni el navegador web son responsables de garantizar que localhost.localdomain sea 127.0.0.1).

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

Low

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2018-02-16 CVE Reserved
2018-02-16 CVE Published
2024-07-03 EPSS Updated
2024-08-05 CVE Updated
2024-08-05 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-284: Improper Access Control
CWE-290: Authentication Bypass by Spoofing

CAPEC

References (7)

URL	Tag	Source
https://lists.debian.org/debian-lts-announce/2018/02/msg00023.html	Mailing List
https://lists.debian.org/debian-lts-announce/2018/07/msg00003.html	Mailing List

URL	Date	SRC
https://bugs.chromium.org/p/project-zero/issues/detail?id=1048	2024-08-05

URL	Date	SRC
https://github.com/apple/cups/commit/afa80cb2b457bf8d64f775bed307588610476c41	2019-10-03

URL	Date	SRC
https://usn.ubuntu.com/3577-1	2019-10-03
https://access.redhat.com/security/cve/CVE-2017-18190	2020-09-29
https://bugzilla.redhat.com/show_bug.cgi?id=1546395	2020-09-29

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Apple Search vendor "Apple"		Cups Search vendor "Apple" for product "Cups"				< 2.2.2 Search vendor "Apple" for product "Cups" and version " < 2.2.2"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				7.0 Search vendor "Debian" for product "Debian Linux" and version "7.0"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				8.0 Search vendor "Debian" for product "Debian Linux" and version "8.0"		-		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				14.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "14.04"		lts		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				16.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "16.04"		lts		Affected