Bug 1546395 (CVE-2017-18190) - CVE-2017-18190 cups: DNS rebinding attacks via incorrect whitelist
Summary: CVE-2017-18190 cups: DNS rebinding attacks via incorrect whitelist
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2017-18190
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard: impact=moderate,public=20180216,repor...
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2018-02-16 23:10 UTC by Laura Pardo
Modified: 2019-06-08 22:41 UTC (History)
3 users (show)

Fixed In Version: cups 2.2.2
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2019-06-08 03:40:18 UTC


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Description Laura Pardo 2018-02-16 23:10:18 UTC
A flaw was found in CUPS. 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).

External References:
https://bugs.chromium.org/p/project-zero/issues/detail?id=1048

Upstream Patch:
https://github.com/apple/cups/commit/afa80cb2b457bf8d64f775bed307588610476c41


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