Bug 1549410 (CVE-2017-18196)

Summary:	CVE-2017-18196 leptonica: Mishandled pathnames in /tmp subdirectories can allow users to bypass intended file restrictions
Product:	[Other] Security Response	Reporter:	Sam Fowler <sfowler>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	jkucera, manisandro, rhel8-maint
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	leptonica 1.75	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-10-21 19:55:26 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:	1549412, 1549411, 1549413
Bug Blocks:

Description Sam Fowler 2018-02-27 04:02:59 UTC

Leptonica 1.74.4 constructs unintended pathnames (containing duplicated path components) when operating on files in /tmp subdirectories, which might allow local users to bypass intended file restrictions by leveraging access to a directory located deeper within the /tmp directory tree.


Additional References:

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=885704

Comment 1 Sam Fowler 2018-02-27 04:03:20 UTC

Created leptonica tracking bugs for this issue:

Affects: epel-all [bug 1549412]
Affects: fedora-all [bug 1549411]