Bug 1253692 (CVE-2006-4842)

Summary:	CVE-2006-4842 nspr: setuid root programs linked with NSPR allow elevation of privilege
Product:	[Other] Security Response	Reporter:	Adam Mariš <amaris>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	emaldona, kengert
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	nspr 4.7	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2015-08-14 14:30:33 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:

Description Adam Mariš 2015-08-14 13:13:32 UTC

NSPR logging is controlled with a couple of environment variables, 
one to enable it, and a second to control the name of the log file.
This appears to all work in "optimized" (non-debug) builds.  

So, if any setuid root program is linked with NSPR, any user can clobber
any file on the system (any root writable file) by setting NSPR's 
environment variables to log to that file, and then running a setuid root
program linked with NSPR.

External reference:
https://bugzilla.mozilla.org/show_bug.cgi?id=351470