Bug 1882320 (CVE-2020-25559)

Summary:	CVE-2020-25559 gnuplot: double free when executing print_set_output may lead to arbitrary code execution
Product:	[Other] Security Response	Reporter:	Marian Rehak <mrehak>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED WONTFIX	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	jkucera, orion, pcahyna
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in gnuplot. A double free memory issue when executing print_set_output may result in context-dependent arbitrary code execution. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-11-02 17:48:00 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:	1882321, 1882851, 1882852
Bug Blocks:	1882326

Description Marian Rehak 2020-09-24 10:32:21 UTC

gnuplot 5.5 is affected by double free when executing print_set_output. This may result in context-dependent arbitrary code execution.

Reference:

https://sourceforge.net/p/gnuplot/bugs/2312/

Comment 1 Marian Rehak 2020-09-24 10:32:52 UTC

Created gnuplot tracking bugs for this issue:

Affects: fedora-all [bug 1882321]

Comment 2 Todd Cullum 2020-09-25 20:23:33 UTC

Upstream commit: https://github.com/gnuplot/gnuplot/commit/052cbd17c3cbbc602ee080b2617d32a8417d7563

Comment 4 Todd Cullum 2020-09-25 21:30:40 UTC

I've set RHEL7 severity to low as it would not reproduce but seems to be possible in the source code.