Bug 1563993 – CVE-2018-1103 source-to-image: Unsanitized paths in tar.go:ExtractTarStreamFromTarReader() allow malicious containers to overwrite files on the client machine

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Bug 1563993 - (CVE-2018-1103) CVE-2018-1103 source-to-image: Unsanitized paths in tar.go:ExtractTarStreamFromTarReader() allow malicious containers to overwrite files on the client machine

Summary:	CVE-2018-1103 source-to-image: Unsanitized paths in tar.go:ExtractTarStreamFr...

Status:	NEW

Aliases:	CVE-2018-1103

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	medium Severity medium
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Assigned To:	Red Hat Product Security
QA Contact:
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URL:
Whiteboard:	impact=moderate,public=20180612,repor...
Keywords:	Security

Depends On:	1585579 1590175 1577289 1577290 1577291
Blocks:	1569669
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Reported:	2018-04-05 02:47 EDT by Sam Fowler
Modified:	2018-08-31 17:40 EDT (History)
CC List:	18 users (show)

See Also:
Fixed In Version:	source-to-image 1.1.10
Doc Type:	If docs needed, set a value
Doc Text:	An improper validation of user input flaw was found in the source-to-image component of Openshift. An attacker who could trick a user into using the command to copy files locally, from a pod, could override files outside of the target directory of the command.
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Description Sam Fowler 2018-04-05 02:47:43 EDT

Openshift Enterprise through version 3.6 has does not properly sanitize archived filenames in source-to-image/pkg/tar/tar.go:ExtractTarStreamFromTarReader(). An attacker can exploit this with a malicous container to overwrite files on client machines when clients use "oc rsync" to connect to that container.

This is a related but separate issue to CVE-2018-1102.

Comment 1 Sam Fowler 2018-04-05 02:47:51 EDT

Acknowledgments:

Name: Michael Hanselmann (Independent)

Comment 6 Doran Moppert 2018-06-12 02:57:24 EDT

Created source-to-image tracking bugs for this issue:

Affects: fedora-all [bug 1590175]

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