Bug 1517922 (CVE-2017-16879)

Summary:	CVE-2017-16879 ncurses: Stack-based buffer overflow in the _nc_write_entry function
Product:	[Other] Security Response	Reporter:	Adam Mariš <amaris>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED WONTFIX	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	mlichvar
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:	2017-11-28 09:51:22 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1517923
Bug Blocks:	1517924

Description Adam Mariš 2017-11-27 17:16:20 UTC

Stack-based buffer overflow in the _nc_write_entry function in tinfo/write_entry.c in ncurses 6.0 allows attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted terminfo file, as demonstrated by tic.

References:

https://cxsecurity.com/issue/WLB-2017110106

Comment 1 Adam Mariš 2017-11-27 17:16:43 UTC

Created ncurses tracking bugs for this issue:

Affects: fedora-all [bug 1517923]

Comment 2 Stefan Cornelius 2017-11-28 09:51:22 UTC

fortify source mitigates this to a crash only.

Comment 3 Stefan Cornelius 2017-11-28 09:51:30 UTC

Statement:

Red Hat Product Security has rated this issue as having Low security impact. This issue is not currently planned to be addressed in future updates. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.