Bug 1539685 (CVE-2017-7516)

Summary:	CVE-2017-7516 cpio: --no-absolute-filenames bypass via symlinks
Product:	[Other] Security Response	Reporter:	Cedric Buissart <cbuissar>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED DUPLICATE	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	carnil, cbuissar, databases-maint, dmoppert, hhorak, kdudka, ovasik, praiskup, tomm.momi
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:	2018-02-23 11:55:28 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:	1188590, 1539687, 1539688
Bug Blocks:	1458829

Description Cedric Buissart 2018-01-29 12:44:53 UTC

Note: this bug is actually a duplicate of CVE-2015-1197. See CVE-2015-1197 for information regarding this.

A possible --no-absolute-filenames bypass while extracting a malicious archive in cpio. This allows for arbitrary file creation.

Comment 1 Cedric Buissart 2018-01-29 12:46:21 UTC

External References:

http://lists.gnu.org/archive/html/bug-cpio/2017-06/msg00001.html

Comment 2 Cedric Buissart 2018-01-29 12:54:18 UTC

Created cpio tracking bugs for this issue:

Affects: fedora-all [bug 1539688]

Comment 4 Adam Mariš 2018-01-29 15:24:37 UTC

Acknowledgments:

Name: Cedric Buissart (Red Hat)

Comment 6 Salvatore Bonaccorso 2018-02-18 21:30:48 UTC

Hi Cedric,

Isn't that a duplicate of CVE-2015-1197?

Regards,
Salvatore

Comment 7 Salvatore Bonaccorso 2018-02-18 21:45:20 UTC

Sorry to be more specific, there are references in the MITRE entry at https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-1197 . 

https://lists.gnu.org/archive/html/bug-cpio/2015-01/msg00000.html

Was posted on the cpio bug list, but I think it never got a reply. Several distributions seem to have then applied the patch from SuSE (at least in Debian, SUSE, Ubuntu, Mageia).

Regards,
Salvatore

Comment 8 Salvatore Bonaccorso 2018-02-20 05:45:31 UTC

Hi Doran, hi Cedric

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7516 has been updated.

Regards,
Salvatore

Comment 9 Cedric Buissart 2018-02-23 11:55:28 UTC

Hi Salvatore,
Ouch ... thanks! I had missed it :(

Comment 10 Cedric Buissart 2018-03-13 11:43:09 UTC


*** This bug has been marked as a duplicate of bug 1179773 ***