Bug 1672379 (CVE-2019-3463)

Summary:	CVE-2019-3463 rssh: rsync bypass resulting in arbitrary code execution
Product:	[Other] Security Response	Reporter:	Laura Pardo <lpardo>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	contribs, huzaifas, xavier
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-06-10 10:47:19 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:	1672380, 1672381
Bug Blocks:

Description Laura Pardo 2019-02-04 19:47:37 UTC

A flaw was found in rssh. The client could send the --daemon and --config options to the server and they would be passed through by rssh.  Not only does this allow the client to start a daemon listening on the normal rsync port, which is probably not desirable, but various options set in the daemon configuration file specified with --config allow arbitrary code execution.  (The most obvious is pre-xfer exec.)


References:
https://sourceforge.net/p/rssh/mailman/message/36536555/

Comment 1 Laura Pardo 2019-02-04 19:47:53 UTC

Created rssh tracking bugs for this issue:

Affects: epel-all [bug 1672381]
Affects: fedora-all [bug 1672380]

Comment 2 Product Security DevOps Team 2019-06-10 10:47:19 UTC

This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.