Bug 1537055 (CVE-2018-1000032)

Summary:	CVE-2018-1000032 unzip: Heap-based buffer overflow in charset_to_intern()
Product:	[Other] Security Response	Reporter:	Adam Mariš <amaris>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	branto, jamartis, kdudka, pstodulk, security-response-team, vvitek
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	unzip 6.1c23	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-06-08 03:37:51 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:	1537056, 1543337
Bug Blocks:	1537057

Description Adam Mariš 2018-01-22 11:05:25 UTC

Heap-based buffer overflow was found in charset_to_intern() function which can be used to write null-bytes out-of-bound when converting attacker-controlled strings to the local charset.

Comment 4 Adam Mariš 2018-01-22 12:57:39 UTC

Acknowledgments:

Name: R. Freingruber (SEC Consult Vulnerability Lab)

Comment 5 Pedro Yóssis Silva Barbosa 2018-01-25 15:56:27 UTC

Statement:

This issue did not affect the versions of unzip as shipped with Red Hat Enterprise Linux 5, 6, and 7, as they did not include the function charset_to_intern, or the code is different and does not contain the vulnerable part.

Comment 6 Adam Mariš 2018-02-08 09:02:08 UTC

External References:

https://www.sec-consult.com/en/blog/advisories/multiple-vulnerabilities-in-infozip-unzip/index.html

Comment 7 Adam Mariš 2018-02-08 09:45:22 UTC

Created unzip tracking bugs for this issue:

Affects: fedora-all [bug 1543337]