Bug 504207

Summary: CVE-2009-0688 cyrus-imapd uses sasl_encode64() improperly
Product: [Other] Security Response Reporter: Vincent Danen <vdanen>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: jlieskov, kreilly, mgandhi, mhlavink, mjc, security-response-team, s-taka
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard: impact=important,source=redhat,reported=20090529,public=20090514,cvssv2=6.4/AV:N/AC:L/Au:N/C:P/I:N/A:P
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2010-03-29 05:17:15 EDT Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---
Bug Depends On: 505425, 505426, 505427, 505428    
Bug Blocks: 487251    

Description Vincent Danen 2009-06-04 15:11:03 EDT
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 13:35:10 EDT
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