Bug 1333378 (CVE-2016-3728)

Summary:	CVE-2016-3728 foreman: Missing input validation in Smart Proxy allows RCE via TFTP file variant parameter
Product:	[Other] Security Response	Reporter:	Adam Mariš <amaris>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	abaron, aortega, apevec, ayoung, bkearney, cbillett, chrisw, jschluet, lhh, lpeer, markmc, mburns, mmccune, ohadlevy, rbryant, rhos-maint, satellite6-bugs, sclewis, sisharma, srevivo, tdecacqu, tjay, tlestach
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:	It was found that the “variant” parameter in the TFTP API of Foreman was passed to the eval() function. An attacker could possibly use this flaw to execute arbitrary code with the privileges of the Foreman user.	Story Points:	---
Clone Of:
Clones:	1333405 1333408 (view as bug list)		Environment:
Last Closed:	2016-09-19 20:26:57 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1333405, 1333408
Bug Blocks:	1333386

Description Adam Mariš 2016-05-05 12:00:41 UTC

It was reported that TFTP API module in Smart Proxy is vulnerable to remote code execution via "variant" parameter, which is used to instantiate an implementation class using eval() on the user supplemented input.

Service is usually restricted in a default Foreman installation by requiring client SSL certificates and enforcing access to a configured list of trusted hosts, but may also be configured openly. The TFTP module is enabled in default installation, but may be disabled. Affected versions are 0.2 and higher.

Upstream bug:

http://projects.theforeman.org/issues/14931

Comment 1 Adam Mariš 2016-05-05 12:01:00 UTC

Acknowledgments:

Name: the Foreman project
Upstream: Lukas Zapletal (Red Hat)

Comment 3 Kurt Seifried 2016-09-19 20:26:57 UTC

This issue has been addressed in:

Satellite 6.2

In RHBA-2016:1501