Bug 504207

Summary:	CVE-2009-0688 cyrus-imapd uses sasl_encode64() improperly
Product:	[Other] Security Response	Reporter:	Vincent Danen <vdanen>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	jlieskov, kreilly, mgandhi, mhlavink, mjc, security-response-team, s-taka
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:	2010-03-29 09:17:15 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:	505425, 505426, 505427, 505428
Bug Blocks:	487251

Description Vincent Danen 2009-06-04 19:11:03 UTC

An issue was reported in how cyrus-sasl did not reliably terminate its output from the sasl_encode64() function.  During an audit of programs that use sasl_encode64(), it was found that cyrus-imapd just allocates a large output buffer without any appropriate checks against the size of the input buffer.  The strings in question are not used for anything odd; they are simply copied elsewhere.  This means that we are going to see a crash, leaking some memory to the server, or auth failures.

More information on the issue as originally reported against cyrus-sasl (CVE-2009-0688) is available in bug #487251.

Comment 20 errata-xmlrpc 2009-06-18 17:35:10 UTC

This issue has been addressed in following products:

  Red Hat Enterprise Linux 4
  Red Hat Enterprise Linux 5

Via RHSA-2009:1116 https://rhn.redhat.com/errata/RHSA-2009-1116.html