Bug 1108612 (CVE-2014-3980)

Summary:	CVE-2014-3980 libfep: local privilege escalation via UNIX domain sockets in the abstract namespace
Product:	[Other] Security Response	Reporter:	Vasyl Kaigorodov <vkaigoro>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	dueno, i18n-bugs
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	libfep 0.1.0	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-06-08 02:33:29 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:	1108616
Bug Blocks:

Description Vasyl Kaigorodov 2014-06-12 10:28:13 UTC

It was discovered that libfep uses UNIX domain sockets in the abstract 
namespace in an insecure way.  As a result, unprivileged local users 
were able to inject commands into running fep sessions of other users.

The upstream fix simply removes abstract namespace support, using a 
restricted directory to host the UNIX domain socket instead:

https://github.com/ueno/libfep/commit/293d9d3f

Abstract namespace support was introduced in this commit:

https://github.com/ueno/libfep/commit/5a170323

This means that versions from 0.0.5 to 0.0.9 (inclusive) are vulnerable, 
and 0.1.0 has the fix.

External references:

 http://www.openwall.com/lists/oss-security/2014/06/05/16
 http://www.securityfocus.com/bid/67903

Comment 1 Vasyl Kaigorodov 2014-06-12 10:29:35 UTC

Created libfep tracking bugs for this issue:

Affects: fedora-all [bug 1108616]

Comment 2 Fedora Update System 2014-06-17 23:27:06 UTC

libfep-0.1.0-1.fc19 has been pushed to the Fedora 19 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 3 Fedora Update System 2014-06-17 23:27:20 UTC

libfep-0.1.0-1.fc20 has been pushed to the Fedora 20 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 4 Product Security DevOps Team 2019-06-08 02:33:29 UTC

This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.