VulnerabilityModified

CVE-2017-18190

HIGH 7.5EPSS 2.92%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (2.92%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

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 3.0: 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
EPSS: 2.92% probability · 86th percentile
CISA KEV: Not listed
Weakness: CWE-290
Affected: apple/cups · debian/debian linux · canonical/ubuntu linux
Source: cve@mitre.org

References

https://bugs.chromium.org/p/project-zero/issues/detail?id=1048Exploit, Issue Tracking, Third Party Advisory
https://github.com/apple/cups/commit/afa80cb2b457bf8d64f775bed307588610476c41Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/02/msg00023.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/07/msg00003.htmlMailing List, Third Party Advisory
https://usn.ubuntu.com/3577-1/Third Party Advisory
https://bugs.chromium.org/p/project-zero/issues/detail?id=1048Exploit, Issue Tracking, Third Party Advisory
https://github.com/apple/cups/commit/afa80cb2b457bf8d64f775bed307588610476c41Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/02/msg00023.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/07/msg00003.htmlMailing List, Third Party Advisory
https://usn.ubuntu.com/3577-1/Third Party Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.