Bug 2070875 (CVE-2019-7283)

Summary:	CVE-2019-7283 netkit-rsh: possible overwrite of arbitrary files by a malicious rsh server
Product:	[Other] Security Response	Reporter:	Marian Rehak <mrehak>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED WONTFIX	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	luhliari, mruprich, msekleta, vonsch
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:	A vulnerability was found in rsh. The vulnerability occurs due to a possible overwrite of arbitrary files by a malicious rsh server. This flaw allows an attacker or a malicious rsh server (or a Man-in-The-Middle attacker) to overwrite arbitrary files in a directory on the rcp client machine.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2022-04-01 11:56:17 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:	2070876, 2070877
Bug Blocks:	2065724

Description Marian Rehak 2022-04-01 09:22:45 UTC

An issue was discovered in rcp in NetKit through 0.17. For an rcp operation, the server chooses which files/directories are sent to the client. However, the rcp client only performs cursory validation of the object name returned. A malicious rsh server (or Man-in-The-Middle attacker) can overwrite arbitrary files in a directory on the rcp client machine.

Reference:

https://bugs.debian.org/920486
https://lists.debian.org/debian-lts-announce/2021/11/msg00016.html
https://sintonen.fi/advisories/scp-client-multiple-vulnerabilities.txt

Comment 1 Marian Rehak 2022-04-01 09:23:05 UTC

Created rsh tracking bugs for this issue:

Affects: epel-all [bug 2070876]
Affects: fedora-all [bug 2070877]

Comment 2 Product Security DevOps Team 2022-04-01 11:56:15 UTC

This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2019-7283