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CVE-2017-18190· NVD / CVE Program· CNA mitre

A localhost.localdomain whitelist entry in valid_host() in scheduler/client.c in CUPS before 2.2.2 allows remote attackers to execute arbitr

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).

HighCVSS 7.5 · v3.0—No exploit Fix available
Published
Feb 16, 2018
Updated
Jun 16, 2026
EPSS
2.9% · 87th percentile
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Report tools

JSON

Action score

31

Monitor

Low priority for now.

CVSS
30 / 40 · 7.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
1 / 30 · 2.9%

Affected systems

VendorProduct
applecups
debiandebian linux
canonicalubuntu linux

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • apple cupsbefore 2.2.2
  • canonical ubuntu linux14.04
  • canonical ubuntu linux16.04
  • debian debian linux7.0
  • debian debian linux8.0

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Alpine:v3.5cupsbefore 2.2.2-r02.2.2-r0
Debian:12cupsbefore 2.2.3-22.2.3-2
Debian:7cupsbefore 1.5.3-5+deb7u71.5.3-5+deb7u7
Debian:8cupsbefore 1.7.5-11+deb8u31.7.5-11+deb8u3
Red Hat:enterprise_linux:7::clientcupsbefore 1:1.6.3-51.el71:1.6.3-51.el7
Red Hat:enterprise_linux:7::clientcups-clientbefore 1:1.6.3-51.el71:1.6.3-51.el7
Red Hat:enterprise_linux:7::clientcups-debuginfobefore 1:1.6.3-51.el71:1.6.3-51.el7
Red Hat:enterprise_linux:7::clientcups-develbefore 1:1.6.3-51.el71:1.6.3-51.el7
Red Hat:enterprise_linux:7::clientcups-filesystembefore 1:1.6.3-51.el71:1.6.3-51.el7
Red Hat:enterprise_linux:7::clientcups-ipptoolbefore 1:1.6.3-51.el71:1.6.3-51.el7
Red Hat:enterprise_linux:7::clientcups-libsbefore 1:1.6.3-51.el71:1.6.3-51.el7
Red Hat:enterprise_linux:7::clientcups-lpdbefore 1:1.6.3-51.el71:1.6.3-51.el7
SUSE:OpenStack Cloud 6cupsbefore 1.7.5-20.3.11.7.5-20.3.1

Same product

apple: all records

Other highest-scoring records for the same primary product.

  • CVE-2008-3641The Hewlett-Packard Graphics Language (HPGL) filter in CUPS before 1.3.9 allows remote attackers to execute arbitrary code via crafted pen w
    47Plan
  • CVE-2008-0053Multiple buffer overflows in the HP-GL/2-to-PostScript filter in CUPS before 1.3.6 might allow remote attackers to execute arbitrary code vi
    42Plan
  • CVE-2010-2941ipp.c in cupsd in CUPS 1.4.4 and earlier does not properly allocate memory for attribute values with invalid string data types, which allows
    41Plan
  • CVE-2008-5184The web interface (cgi-bin/admin.c) in CUPS before 1.3.8 uses the guest username when a user is not logged on to the web server, which makes
    41Plan
  • CVE-2012-6094cups (Common Unix Printing System) 'Listen localhost:631' option not honored correctly which could provide unauthorized access to the system
    40Plan
  • CVE-2004-2154CUPS before 1.1.21rc1 treats a Location directive in cupsd.conf as case sensitive, which allows attackers to bypass intended ACLs via a prin
    40Plan

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
alpine:cups2.2.2-r0 · Alpine:v3.5Package registry (OSV)
debian:cups2.2.3-2 · Debian:12Package registry (OSV)
red hat:cups1:1.6.3-51.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:cups-client1:1.6.3-51.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:cups-debuginfo1:1.6.3-51.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:cups-devel1:1.6.3-51.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:cups-filesystem1:1.6.3-51.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:cups-ipptool1:1.6.3-51.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:cups-libs1:1.6.3-51.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:cups-lpd1:1.6.3-51.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
suse:cups1.7.5-20.3.1 · SUSE:OpenStack Cloud 6Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
high · data or configuration can be modified
Availability
none
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
High
Availability impact
None

Weakness class (CWE)

CWE-290 · Authentication Bypass by Spoofing

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

We use this product, ask for help

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records