Bug 427575 (CVE-2007-6598)

Summary:	CVE-2007-6598 dovecot LDAP+auth cache user login mixup
Product:	[Other] Security Response	Reporter:	Ville Skyttä <ville.skytta>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	kreilly
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:	2008-05-29 07:47:28 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:	437152
Bug Blocks:

Description Ville Skyttä 2008-01-04 20:43:47 UTC

http://nvd.nist.gov/nvd.cfm?cvename=CVE-2007-6598
http://dovecot.org/list/dovecot-news/2007-December/000058.html

"Dovecot before 1.0.10, with certain configuration options including use of
%variables, does not properly maintain the LDAP+auth cache, which might allow
remote authenticated users to login as a different user who has the same password."

Comment 1 Tomas Janousek 2008-01-07 11:26:07 UTC

Updates were pushed to F7 and F8. We're not fixing this in EL5, I think.

Comment 2 Josh Bressers 2008-01-07 20:27:26 UTC

I'm assigning this a severity of low.  This requires a very non default setup,
and even then it's only really an issue if two users have the same password and
log in within an hour of each other.

This is likely worth fixing with the next dovecot update, but the risk and time
required to fix only this issue negates the possible benefit fixing it right now.

Comment 3 Tomas Hoger 2008-03-12 10:41:41 UTC

This seems to be a relevant upstream commit:

http://hg.dovecot.org/dovecot-1.0/rev/2cedab21cd6d

This issue does not affect dovecot packages as shipped in Red Hat Enterprise
Linux 4, as they do not offer auth cache functionality.

Comment 5 Red Hat Product Security 2008-05-29 07:47:28 UTC

This issue was addressed in:

Red Hat Enterprise Linux:
  http://rhn.redhat.com/errata/RHSA-2008-0297.html

Fedora:
  updated to fixed upstream version