Bug 1554672 (CVE-2018-7726)

Summary:	CVE-2018-7726 zziplib: Bus error in zip.c:__zzip_parse_root_directory() cause crash via crafted zip file
Product:	[Other] Security Response	Reporter:	Sam Fowler <sfowler>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	abokovoy, jamartis, rschiron
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	zziplib 0.13.69	Doc Type:	If docs needed, set a value
Doc Text:	An improper input validation was found in function __zzip_fetch_disk_trailer of ZZIPlib, up to 0.13.68, that could lead to a crash in __zzip_parse_root_directory function of zzip/zip.c. Remote attackers could leverage this vulnerability to cause a denial of service via a crafted zip file.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-06-10 10:17:38 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:	1554673, 1555082, 1558623
Bug Blocks:	1554666

Description Sam Fowler 2018-03-13 06:47:34 UTC

ZZIPlib through version 0.13.68 does not correctly validate input values used in
zip.c:__zzip_parse_root_directory() as parameters to mmap. Remote attackers
could leverage this vulnerability to cause a Denial of Service via a crafted
zip file.


Upstream Issue:
https://github.com/gdraheim/zziplib/issues/41
https://github.com/gdraheim/zziplib/issues/27

Upstream patches:
https://github.com/gdraheim/zziplib/commit/8f48323c181e20b7e527b8be7229d6eb1148ec5f
https://github.com/gdraheim/zziplib/commit/19c9e4dc6c5cf92a38d0d23dbccac6993f9c41be
https://github.com/gdraheim/zziplib/commit/feae4da1a5c92100c44ebfcbaaa895959cc0829b

Comment 1 Sam Fowler 2018-03-13 06:47:54 UTC

Created zziplib tracking bugs for this issue:

Affects: fedora-all [bug 1554673]

Comment 5 Riccardo Schirone 2018-03-21 08:21:48 UTC

*** Bug 1545813 has been marked as a duplicate of this bug. ***

Comment 6 errata-xmlrpc 2018-10-30 07:51:59 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2018:3229 https://access.redhat.com/errata/RHSA-2018:3229