High severity · published Feb 16, 2018
CVE-2017-18190
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…
7.5
CVSS
2.9%
EPSS
No
On KEV
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
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.9% · higher than 87% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CU
Cups · Apple
before 2.2.2 · source: NVD
DL
Debian Linux · Debian
7.0; 8.0 · source: NVD
UL
Ubuntu Linux · Canonical
14.04; 16.04 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-18190
CVE.org
https://www.cve.org/CVERecord?id=CVE-2017-18190
Exploit
https://bugs.chromium.org/p/project-zero/issues/detail?id=1048
Patch
https://github.com/apple/cups/commit/afa80cb2b457bf8d64f775bed307588610476c41
Mailing List
https://lists.debian.org/debian-lts-announce/2018/02/msg00023.html
Mailing List
https://lists.debian.org/debian-lts-announce/2018/07/msg00003.html
Third Party Advisory
https://usn.ubuntu.com/3577-1/
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