Bug 1538457 (CVE-2017-17969)

Summary:	CVE-2017-17969 p7zip: heap-based buffer overflow in 7zip/Compress/ShrinkDecoder.cpp can allow an attacker to write arbitrary data and cause a crash
Product:	[Other] Security Response	Reporter:	Sam Fowler <sfowler>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	matthias, sergio, than
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:	2018-05-03 09:33:32 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:	1538458, 1538459, 1538471
Bug Blocks:

Description Sam Fowler 2018-01-25 06:53:33 UTC

A heap-based buffer overflow in 7-Zip's shrink decoder can allow an attacker to write arbitrary data to memory and cause a crash.

Versions of p7zip up to and including 16.02 are vulnerable. A fix for this vulnerability is available in the beta version of 7-zip 18.00 (for Windows).

External References:
https://landave.io/2018/01/7-zip-multiple-memory-corruptions-via-rar-and-zip
http://www.7-zip.org/history.txt

Comment 1 Sam Fowler 2018-01-25 06:53:59 UTC

Created p7zip tracking bugs for this issue:

Affects: epel-all [bug 1538458]
Affects: fedora-all [bug 1538459]