Bug 1973826 (CVE-2020-18442)

Summary:	CVE-2020-18442 zziplib: infinite loop via the return value of zzip_file_read() as used in unzzip_cat_file()
Product:	[Other] Security Response	Reporter:	Guilherme de Almeida Suckevicz <gsuckevi>
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
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	zziplib 0.13.72	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-11-09 22:51:33 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:	1973831, 1976339, 1977964
Bug Blocks:	1973827

Description Guilherme de Almeida Suckevicz 2021-06-18 19:39:46 UTC

Infinite Loop in zziplib v0.13.69 allows remote attackers to cause a denial of service via the return value "zzip_file_read" in the function "unzzip_cat_file".

Reference:
https://github.com/gdraheim/zziplib/issues/68

Comment 1 Guilherme de Almeida Suckevicz 2021-06-18 19:42:43 UTC

Created zziplib tracking bugs for this issue:

Affects: fedora-all [bug 1973831]

Comment 4 devthomp 2021-06-30 19:52:45 UTC

The fix for this issue is upstream here:
https://github.com/gdraheim/zziplib/commit/ac9ae39ef419e9f0f83da1e583314d8c7cda34a6

Comment 6 devthomp 2021-07-01 13:32:59 UTC

Zziplib is susceptible to infinite loop (loop with unreachable exit condition) when processing malformed zip files.The behavior of this condition could cause terminal unresponsiveness when running the command line. When using the library this could lead to application unresponsiveness.High CPU on said application/binary is also a possibility of this issue.

Comment 7 errata-xmlrpc 2021-11-09 18:12:19 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2021:4316 https://access.redhat.com/errata/RHSA-2021:4316

Comment 8 Product Security DevOps Team 2021-11-09 22:51:31 UTC

This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2020-18442