Bug 1554676 – CVE-2018-7727 zziplib: Memory leak in memdisk.c:zzip_mem_disk_new() can lead to denial of service via crafted zip

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Bug 1554676 - (CVE-2018-7727) CVE-2018-7727 zziplib: Memory leak in memdisk.c:zzip_mem_disk_new() can lead to denial of service via crafted zip

Summary:	CVE-2018-7727 zziplib: Memory leak in memdisk.c:zzip_mem_disk_new() can lead ...

Status:	NEW

Aliases:	CVE-2018-7727

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

Priority	low Severity low
Target Milestone:	---
Target Release:	---
Assigned To:	Red Hat Product Security
QA Contact:
Docs Contact:

URL:
Whiteboard:	impact=low,public=20180306,reported=2...
Keywords:	Security

Depends On:	1555082 1554673 1558891
Blocks:	1554666
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Reported:	2018-03-13 02:58 EDT by Sam Fowler
Modified:	2018-10-30 03:52 EDT (History)
CC List:	3 users (show)

See Also:
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.
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oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
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External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHSA-2018:3229	None	None	None	2018-10-30 03:52 EDT

Groups: None (edit)

Description Sam Fowler 2018-03-13 02:58:11 EDT

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 03:05:32 EDT

Created zziplib tracking bugs for this issue:

Affects: fedora-all [bug 1554673]

Comment 5 errata-xmlrpc 2018-10-30 03:52:10 EDT

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

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