Bug 1554676 (CVE-2018-7727)

Summary:	CVE-2018-7727 zziplib: Memory leak in memdisk.c:zzip_mem_disk_new() can lead to denial of service via crafted zip
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:	A memory leak was found in unzip-mem.c and unzzip-mem.c of ZZIPlib, up to v0.13.68, that could lead to resource exhaustion. Local 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 10:17:39 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, 1558891
Bug Blocks:	1554666

Description Sam Fowler 2018-03-13 06:58:11 UTC

ZZIPlib through version 0.13.68 is vulnerable to a memory leak in
unzzipcat-mem.c:unzzip_cat() and unzip-mem.c:main(), where a ZZIP_MEM_DISK is
allocated but not released. An attacker could exploit this to cause a denial of
service via a crafted zip file.


Upstream Issue:
https://github.com/gdraheim/zziplib/issues/40

Upstream Patches:
https://github.com/gdraheim/zziplib/commit/83a2da55922f67e07f22048ac9671a44cc0d35c4

Comment 1 Sam Fowler 2018-03-13 07:05:32 UTC

Created zziplib tracking bugs for this issue:

Affects: fedora-all [bug 1554673]

Comment 5 errata-xmlrpc 2018-10-30 07:52:10 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