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CVE-2017-18190

A localhost.localdomain whitelist entry in valid_host() in scheduler/client.c in CUPS before 2.2...

7.5 HighFix available

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).

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
High
Availability
None

Exploit likelihood

2.92%Up 2.7 points since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 7.5

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).

Record
CVE-2017-18190
CVSS 3.0
7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CVSS 2.0
5.0 MediumAV:N/AC:L/Au:N/C:N/I:P/A:N
Weakness
CWE-290
Updated
2026-11-02
CVE List No score

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).

Record
CVE-2017-18190
Updated
2026-11-02
EUVDEUVD-2017-9325 No score

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).

Record
EUVD-2017-9325
Updated
2026-11-03
GitHub AdvisoriesGHSA-vfqc-qhm9-65mm 7.5

A localhost.localdomain whitelist entry in valid_host() in scheduler/client.c in CUPS before 2.2...

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).

Record
GHSA-vfqc-qhm9-65mm
CVSS 3.0
7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Weakness
CWE-290
Updated
2026-11-02
OSVALPINE-CVE-2017-18190 7.5

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).

Record
ALPINE-CVE-2017-18190
CVSS 3.0
7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Updated
2026-11-02
OSV 7.5

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).

Record
CVE-2017-18190
CVSS 3.0
7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Updated
2026-11-02
Show 6 moreShow less
OSVDEBIAN-CVE-2017-18190 7.5

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).

Record
DEBIAN-CVE-2017-18190
CVSS 3.0
7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Updated
2026-11-02
OSVRHSA-2020:3864 5.8

Red Hat Security Advisory: cups security and bug fix update

Record
RHSA-2020:3864
CVSS 3.0
5.8 MediumCVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:L
Updated
2026-11-02
OSVUBUNTU-CVE-2017-18190 7.5

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).

Record
UBUNTU-CVE-2017-18190
CVSS 3.0
7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Updated
2026-11-02
OSVMGASA-2018-0147 No score

Updated cups packages fix security vulnerability

Updated cups packages fix security vulnerability:

Jann Horn discovered that CUPS permitted HTTP requests with the Host header set to "localhost.localdomain" from the loopback interface. If a user were tricked in to opening a specially crafted website in their web browser, an attacker could potentially exploit this to obtain sensitive information or control printers, via a DNS rebinding attack (CVE-2017-18190).

Record
MGASA-2018-0147
Updated
2026-11-02
OSVSUSE-SU-2018:0604-1 No score

Security update for cups

This update for cups fixes the following issues:

  • CVE-2017-18190: Removed localhost.localdomain from list of trustworthy hosts in scheduler/client.c to avoid arbitrary IPP command execution in conjunction with DNS rebinding. (bsc#1081557)
Record
SUSE-SU-2018:0604-1
Updated
2026-11-02
OSVUSN-3577-1 No score

cups vulnerability

Jann Horn discovered that CUPS permitted HTTP requests with the Host header set to "localhost.localdomain" from the loopback interface. If a user were tricked in to opening a specially crafted website in their web browser, an attacker could potentially exploit this to obtain sensitive information or control printers, via a DNS rebinding attack. (CVE-2017-18190)

Record
USN-3577-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
cups
Alpine:v3.5
 before 2.2.2-r0
2.2.2-r0
cups
Debian:12
 before 2.2.3-2
2.2.3-2
cups
Debian:13
 before 2.2.3-2
2.2.3-2
cups
Debian:14
 before 2.2.3-2
2.2.3-2
cups
Debian:7
 before 1.5.3-5+deb7u7, plus listed versions
1.5.3-51.5.3-5+deb7u11.5.3-5+deb7u21.5.3-5+deb7u31.5.3-5+deb7u41.5.3-5+deb7u51.5.3-5+deb7u6
1.5.3-5+deb7u7
cups
Debian:8
 before 1.7.5-11+deb8u3, plus listed versions
1.7.5-111.7.5-11+deb8u11.7.5-11+deb8u2
1.7.5-11+deb8u3
cups
Mageia:5
 before 2.0.4-1.4.mga5
2.0.4-1.4.mga5
cups
Red Hat:enterprise_linux:7::client
 before 1:1.6.3-51.el7
1:1.6.3-51.el7
cups-client
Red Hat:enterprise_linux:7::client
 before 1:1.6.3-51.el7
1:1.6.3-51.el7
cups-debuginfo
Red Hat:enterprise_linux:7::client
 before 1:1.6.3-51.el7
1:1.6.3-51.el7
Show 44 moreShow less
Affected packages
PackageAffectedFixed
cups-filesystem
Red Hat:enterprise_linux:7::client
 before 1:1.6.3-51.el7
1:1.6.3-51.el7
cups-libs
Red Hat:enterprise_linux:7::client
 before 1:1.6.3-51.el7
1:1.6.3-51.el7
cups-lpd
Red Hat:enterprise_linux:7::client
 before 1:1.6.3-51.el7
1:1.6.3-51.el7
cups-devel
Red Hat:enterprise_linux:7::client
 before 1:1.6.3-51.el7
1:1.6.3-51.el7
cups-ipptool
Red Hat:enterprise_linux:7::client
 before 1:1.6.3-51.el7
1:1.6.3-51.el7
cups
Red Hat:enterprise_linux:7::computenode
 before 1:1.6.3-51.el7
1:1.6.3-51.el7
cups-client
Red Hat:enterprise_linux:7::computenode
 before 1:1.6.3-51.el7
1:1.6.3-51.el7
cups-debuginfo
Red Hat:enterprise_linux:7::computenode
 before 1:1.6.3-51.el7
1:1.6.3-51.el7
cups-filesystem
Red Hat:enterprise_linux:7::computenode
 before 1:1.6.3-51.el7
1:1.6.3-51.el7
cups-libs
Red Hat:enterprise_linux:7::computenode
 before 1:1.6.3-51.el7
1:1.6.3-51.el7
cups-lpd
Red Hat:enterprise_linux:7::computenode
 before 1:1.6.3-51.el7
1:1.6.3-51.el7
cups-devel
Red Hat:enterprise_linux:7::computenode
 before 1:1.6.3-51.el7
1:1.6.3-51.el7
cups-ipptool
Red Hat:enterprise_linux:7::computenode
 before 1:1.6.3-51.el7
1:1.6.3-51.el7
cups
Red Hat:enterprise_linux:7::server
 before 1:1.6.3-51.el7
1:1.6.3-51.el7
cups-client
Red Hat:enterprise_linux:7::server
 before 1:1.6.3-51.el7
1:1.6.3-51.el7
cups-debuginfo
Red Hat:enterprise_linux:7::server
 before 1:1.6.3-51.el7
1:1.6.3-51.el7
cups-devel
Red Hat:enterprise_linux:7::server
 before 1:1.6.3-51.el7
1:1.6.3-51.el7
cups-filesystem
Red Hat:enterprise_linux:7::server
 before 1:1.6.3-51.el7
1:1.6.3-51.el7
cups-libs
Red Hat:enterprise_linux:7::server
 before 1:1.6.3-51.el7
1:1.6.3-51.el7
cups-lpd
Red Hat:enterprise_linux:7::server
 before 1:1.6.3-51.el7
1:1.6.3-51.el7
cups-ipptool
Red Hat:enterprise_linux:7::server
 before 1:1.6.3-51.el7
1:1.6.3-51.el7
cups
Red Hat:enterprise_linux:7::workstation
 before 1:1.6.3-51.el7
1:1.6.3-51.el7
cups-client
Red Hat:enterprise_linux:7::workstation
 before 1:1.6.3-51.el7
1:1.6.3-51.el7
cups-debuginfo
Red Hat:enterprise_linux:7::workstation
 before 1:1.6.3-51.el7
1:1.6.3-51.el7
cups-devel
Red Hat:enterprise_linux:7::workstation
 before 1:1.6.3-51.el7
1:1.6.3-51.el7
cups-filesystem
Red Hat:enterprise_linux:7::workstation
 before 1:1.6.3-51.el7
1:1.6.3-51.el7
cups-libs
Red Hat:enterprise_linux:7::workstation
 before 1:1.6.3-51.el7
1:1.6.3-51.el7
cups-lpd
Red Hat:enterprise_linux:7::workstation
 before 1:1.6.3-51.el7
1:1.6.3-51.el7
cups-ipptool
Red Hat:enterprise_linux:7::workstation
 before 1:1.6.3-51.el7
1:1.6.3-51.el7
cups
SUSE:OpenStack Cloud 6
 before 1.7.5-20.3.1
1.7.5-20.3.1
cups
SUSE:Linux Enterprise Desktop 12 SP2
 before 1.7.5-20.3.1
1.7.5-20.3.1
cups
SUSE:Linux Enterprise Desktop 12 SP3
 before 1.7.5-20.3.1
1.7.5-20.3.1
cups
SUSE:Linux Enterprise Server for Raspberry Pi 12 SP2
 before 1.7.5-20.3.1
1.7.5-20.3.1
cups
SUSE:Linux Enterprise Server for SAP Applications 12 SP1
 before 1.7.5-20.3.1
1.7.5-20.3.1
cups
SUSE:Linux Enterprise Software Development Kit 12 SP2
 before 1.7.5-20.3.1
1.7.5-20.3.1
cups
SUSE:Linux Enterprise Software Development Kit 12 SP3
 before 1.7.5-20.3.1
1.7.5-20.3.1
cups
SUSE:Linux Enterprise Server 12-LTSS
 before 1.7.5-20.3.1
1.7.5-20.3.1
cups
SUSE:Linux Enterprise Server 12 SP1-LTSS
 before 1.7.5-20.3.1
1.7.5-20.3.1
cups
SUSE:Linux Enterprise Server 12 SP2
 before 1.7.5-20.3.1
1.7.5-20.3.1
cups
SUSE:Linux Enterprise Server for SAP Applications 12 SP2
 before 1.7.5-20.3.1
1.7.5-20.3.1
cups
SUSE:Linux Enterprise Server 12 SP3
 before 1.7.5-20.3.1
1.7.5-20.3.1
cups
SUSE:Linux Enterprise Server for SAP Applications 12 SP3
 before 1.7.5-20.3.1
1.7.5-20.3.1
cups
Ubuntu:14.04:LTS
 before 1.7.2-0ubuntu1.9, plus listed versions
1.7.0~rc1-0ubuntu51.7.0-0ubuntu21.7.0-0ubuntu31.7.0-11.7.0-2
Show 23 moreShow less
1.7.1-11.7.1-21.7.1-2git11.7.1-31.7.1-41.7.1-4ubuntu11.7.1-5ubuntu11.7.1-5ubuntu31.7.1-5ubuntu41.7.1-5ubuntu51.7.1-5ubuntu61.7.1-5ubuntu71.7.1-5ubuntu81.7.1-5ubuntu91.7.1-5ubuntu101.7.2-0ubuntu11.7.2-0ubuntu1.11.7.2-0ubuntu1.21.7.2-0ubuntu1.41.7.2-0ubuntu1.51.7.2-0ubuntu1.61.7.2-0ubuntu1.71.7.2-0ubuntu1.8
1.7.2-0ubuntu1.9
cups
Ubuntu:16.04:LTS
 before 2.1.3-4ubuntu0.4, plus listed versions
2.1.0-4ubuntu32.1.0-52.1.0-62.1.0-6ubuntu12.1.0-7
Show 8 moreShow less
2.1.2-12.1.2-22.1.3-12.1.3-1build12.1.3-32.1.3-42.1.3-4ubuntu0.22.1.3-4ubuntu0.3
2.1.3-4ubuntu0.4

History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2017-18190 is a high vulnerability (CVSS 7.5) in Apple Cups, published February 16, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.92%, the 87th percentile. Fixed in cups 2.2.2-r0.

References

Show 27 moreShow less
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