Bug 1656174 (CVE-2018-19490)

Summary:	CVE-2018-19490 gnuplot: heap-based buffer overflow in df_generate_ascii_array_entry
Product:	[Other] Security Response	Reporter:	Laura Pardo <lpardo>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	amello, fkluknav, orion, pcahyna, steve.traylen
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:	2018-12-06 11:21:46 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:	1656175, 1656176
Bug Blocks:	1656186

Description Laura Pardo 2018-12-04 21:47:49 UTC

An issue was discovered in datafile.c in Gnuplot 5.2.5. This issue allows an attacker to conduct a heap-based buffer overflow with an arbitrary amount of data in df_generate_ascii_array_entry. To exploit this vulnerability, an attacker must pass an overlong string as the right bound of the range argument that is passed to the plot function. 


References:
https://sourceforge.net/p/gnuplot/bugs/2093/ 
https://sourceforge.net/p/gnuplot/gnuplot-main/ci/d5020716834582b20a5e12cdd49f39ee4f9dd949/

Comment 1 Laura Pardo 2018-12-04 21:48:27 UTC

Created gnuplot tracking bugs for this issue:

Affects: fedora-all [bug 1656176]


Created gnuplot44 tracking bugs for this issue:

Affects: epel-6 [bug 1656175]

Comment 2 Stefan Cornelius 2018-12-06 11:21:56 UTC

Statement:

Gnuplot allows for trivial execution of arbitrary commands from within gnuplot files by design. As such, gnuplot files should be considered as inherently dangerous and users should only execute files from trusted sources.