Bug 1717825 (CVE-2019-12210)

Summary:	CVE-2019-12210 pam-u2f: file descriptor not being closed with debug configuration leads to information disclosure
Product:	[Other] Security Response	Reporter:	Marian Rehak <mrehak>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	sethdjennings
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:	2019-06-10 10:56:52 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:	1717826
Bug Blocks:

Description Marian Rehak 2019-06-06 09:37:45 UTC

If pam-u2f 1.0.7 is configured with debug and a custom debug log file is set using debug_file, file descriptor is not closed when a new process is spawned. This leads to the file descriptor being inherited into the child process. Which can leak sensitive information or be used to fill the disk or plant misinformation.

Upstream commit:

https://github.com/Yubico/pam-u2f/commit/18b1914e32b74ff52000f10e97067e841e5fff62

Comment 1 Marian Rehak 2019-06-06 09:37:53 UTC

Created pam-u2f tracking bugs for this issue:

Affects: fedora-all [bug 1717826]

Comment 2 Product Security DevOps Team 2019-06-10 10:56:52 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.