Bug 711170

Summary:	pam_ssh: privileges not dropped properly before executing ssh-agent
Product:	[Other] Security Response	Reporter:	Jan Lieskovsky <jlieskov>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	dmitry, manuel.wolfshant, pertusus
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2011-09-27 19:13:44 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:	711171, 711172
Bug Blocks:	734540

Description Jan Lieskovsky 2011-06-06 17:43:43 UTC

It was found that pam_ssh, PAM module for use with SSH keys and ssh-agent,
did not properly drop root SGID privileges prior executing the ssh-agent
authentication agent. A local attacker could use this flaw to potentially
escalate their privileges.

References:
[1] https://bugzilla.novell.com/show_bug.cgi?id=665061

Proposed patch:
[2] https://bugzilla.novell.com/show_bug.cgi?id=665061#c3

CVE request:
[3] http://www.openwall.com/lists/oss-security/2011/06/06/3

Comment 1 Jan Lieskovsky 2011-06-06 17:46:04 UTC

This issue affects the versions of the pam_ssh package, as present within
EPEL-4 and EPEL-5 repositories.

--

This issue affects the versions of the pam_ssh package, as shipped with
Fedora release of 13, 14, and 15. Please schedule an update.

Comment 2 Jan Lieskovsky 2011-06-06 17:46:58 UTC

Created pam_ssh tracking bugs for this issue

Affects: epel-all [bug 711171]
Affects: fedora-all [bug 711172]