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Category:   Application (Security)  >   Cyrus SASL Vendors:   Carnegie Mellon University
(Red Hat Issues Fix) Cyrus SASL Buffer Overflow in sasl_encode64 Lets Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1022421
SecurityTracker URL:  http://securitytracker.com/id/1022421
CVE Reference:   CVE-2009-0688   (Links to External Site)
Date:  Jun 18 2009
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 2.1.22 and prior versions
Description:   A vulnerability was reported in Cyrus SASL. A remote user can execute arbitrary code on the target system.

A remote user can send specially crafted data to trigger a buffer overflow in the sasl_encode64() function and execute arbitrary code on the target system. The code will run with the privileges of the target service.

The original advisory is available at:

http://www.kb.cert.org/vuls/id/238019

US-CERT reported this vulnerability.

Impact:   A remote user can execute arbitrary code on the target system.
Solution:   Red Hat has released a fix.

The Red Hat advisory is available at:

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

Vendor URL:  asg.web.cmu.edu/sasl/ (Links to External Site)
Cause:   Boundary error
Underlying OS:  Linux (Red Hat Enterprise)
Underlying OS Comments:  4, 5

Message History:   This archive entry is a follow-up to the message listed below.
May 15 2009 Cyrus SASL Buffer Overflow in sasl_encode64 Lets Remote Users Execute Arbitrary Code



 Source Message Contents

Subject:  [RHSA-2009:1116-01] Important: cyrus-imapd security update


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

=====================================================================
                   Red Hat Security Advisory

Synopsis:          Important: cyrus-imapd security update
Advisory ID:       RHSA-2009:1116-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2009-1116.html
Issue date:        2009-06-18
CVE Names:         CVE-2009-0688 
=====================================================================

1. Summary:

Updated cyrus-imapd packages that fix a security issue are now available
for Red Hat Enterprise Linux 4 and 5.

This update has been rated as having important security impact by the Red
Hat Security Response Team.

2. Relevant releases/architectures:

Red Hat Enterprise Linux AS version 4 - i386, ia64, ppc, s390, s390x, x86_64
Red Hat Enterprise Linux Desktop version 4 - i386, x86_64
Red Hat Enterprise Linux ES version 4 - i386, ia64, x86_64
Red Hat Enterprise Linux WS version 4 - i386, ia64, x86_64
RHEL Desktop Workstation (v. 5 client) - i386, x86_64
Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64

3. Description:

The cyrus-imapd packages contain a high-performance mail server with IMAP,
POP3, NNTP, and SIEVE support.

It was discovered that the Cyrus SASL library (cyrus-sasl) does not always
reliably terminate output from the sasl_encode64() function used by
programs using this library. The Cyrus IMAP server (cyrus-imapd) relied on
this function's output being properly terminated. Under certain conditions,
improperly terminated output from sasl_encode64() could, potentially, cause
cyrus-imapd to crash, disclose portions of its memory, or lead to SASL
authentication failures. (CVE-2009-0688)

Users of cyrus-imapd are advised to upgrade to these updated packages,
which resolve this issue. After installing the update, cyrus-imapd will be
restarted automatically.

4. Solution:

Before applying this update, make sure that all previously-released
errata relevant to your system have been applied.

This update is available via Red Hat Network.  Details on how to use
the Red Hat Network to apply this update are available at
http://kbase.redhat.com/faq/docs/DOC-11259

5. Bugs fixed (http://bugzilla.redhat.com/):

504207 - CVE-2009-0688 cyrus-imapd uses sasl_encode64() improperly

6. Package List:

Red Hat Enterprise Linux AS version 4:

Source:
ftp://updates.redhat.com/enterprise/4AS/en/os/SRPMS/cyrus-imapd-2.2.12-10.el4_8.1.src.rpm

i386:
cyrus-imapd-2.2.12-10.el4_8.1.i386.rpm
cyrus-imapd-debuginfo-2.2.12-10.el4_8.1.i386.rpm
cyrus-imapd-devel-2.2.12-10.el4_8.1.i386.rpm
cyrus-imapd-murder-2.2.12-10.el4_8.1.i386.rpm
cyrus-imapd-nntp-2.2.12-10.el4_8.1.i386.rpm
cyrus-imapd-utils-2.2.12-10.el4_8.1.i386.rpm
perl-Cyrus-2.2.12-10.el4_8.1.i386.rpm

ia64:
cyrus-imapd-2.2.12-10.el4_8.1.ia64.rpm
cyrus-imapd-debuginfo-2.2.12-10.el4_8.1.ia64.rpm
cyrus-imapd-devel-2.2.12-10.el4_8.1.ia64.rpm
cyrus-imapd-murder-2.2.12-10.el4_8.1.ia64.rpm
cyrus-imapd-nntp-2.2.12-10.el4_8.1.ia64.rpm
cyrus-imapd-utils-2.2.12-10.el4_8.1.ia64.rpm
perl-Cyrus-2.2.12-10.el4_8.1.ia64.rpm

ppc:
cyrus-imapd-2.2.12-10.el4_8.1.ppc.rpm
cyrus-imapd-debuginfo-2.2.12-10.el4_8.1.ppc.rpm
cyrus-imapd-devel-2.2.12-10.el4_8.1.ppc.rpm
cyrus-imapd-murder-2.2.12-10.el4_8.1.ppc.rpm
cyrus-imapd-nntp-2.2.12-10.el4_8.1.ppc.rpm
cyrus-imapd-utils-2.2.12-10.el4_8.1.ppc.rpm
perl-Cyrus-2.2.12-10.el4_8.1.ppc.rpm

s390:
cyrus-imapd-2.2.12-10.el4_8.1.s390.rpm
cyrus-imapd-debuginfo-2.2.12-10.el4_8.1.s390.rpm
cyrus-imapd-devel-2.2.12-10.el4_8.1.s390.rpm
cyrus-imapd-murder-2.2.12-10.el4_8.1.s390.rpm
cyrus-imapd-nntp-2.2.12-10.el4_8.1.s390.rpm
cyrus-imapd-utils-2.2.12-10.el4_8.1.s390.rpm
perl-Cyrus-2.2.12-10.el4_8.1.s390.rpm

s390x:
cyrus-imapd-2.2.12-10.el4_8.1.s390x.rpm
cyrus-imapd-debuginfo-2.2.12-10.el4_8.1.s390x.rpm
cyrus-imapd-devel-2.2.12-10.el4_8.1.s390x.rpm
cyrus-imapd-murder-2.2.12-10.el4_8.1.s390x.rpm
cyrus-imapd-nntp-2.2.12-10.el4_8.1.s390x.rpm
cyrus-imapd-utils-2.2.12-10.el4_8.1.s390x.rpm
perl-Cyrus-2.2.12-10.el4_8.1.s390x.rpm

x86_64:
cyrus-imapd-2.2.12-10.el4_8.1.x86_64.rpm
cyrus-imapd-debuginfo-2.2.12-10.el4_8.1.x86_64.rpm
cyrus-imapd-devel-2.2.12-10.el4_8.1.x86_64.rpm
cyrus-imapd-murder-2.2.12-10.el4_8.1.x86_64.rpm
cyrus-imapd-nntp-2.2.12-10.el4_8.1.x86_64.rpm
cyrus-imapd-utils-2.2.12-10.el4_8.1.x86_64.rpm
perl-Cyrus-2.2.12-10.el4_8.1.x86_64.rpm

Red Hat Enterprise Linux Desktop version 4:

Source:
ftp://updates.redhat.com/enterprise/4Desktop/en/os/SRPMS/cyrus-imapd-2.2.12-10.el4_8.1.src.rpm

i386:
cyrus-imapd-2.2.12-10.el4_8.1.i386.rpm
cyrus-imapd-debuginfo-2.2.12-10.el4_8.1.i386.rpm
cyrus-imapd-devel-2.2.12-10.el4_8.1.i386.rpm
cyrus-imapd-murder-2.2.12-10.el4_8.1.i386.rpm
cyrus-imapd-nntp-2.2.12-10.el4_8.1.i386.rpm
cyrus-imapd-utils-2.2.12-10.el4_8.1.i386.rpm
perl-Cyrus-2.2.12-10.el4_8.1.i386.rpm

x86_64:
cyrus-imapd-2.2.12-10.el4_8.1.x86_64.rpm
cyrus-imapd-debuginfo-2.2.12-10.el4_8.1.x86_64.rpm
cyrus-imapd-devel-2.2.12-10.el4_8.1.x86_64.rpm
cyrus-imapd-murder-2.2.12-10.el4_8.1.x86_64.rpm
cyrus-imapd-nntp-2.2.12-10.el4_8.1.x86_64.rpm
cyrus-imapd-utils-2.2.12-10.el4_8.1.x86_64.rpm
perl-Cyrus-2.2.12-10.el4_8.1.x86_64.rpm

Red Hat Enterprise Linux ES version 4:

Source:
ftp://updates.redhat.com/enterprise/4ES/en/os/SRPMS/cyrus-imapd-2.2.12-10.el4_8.1.src.rpm

i386:
cyrus-imapd-2.2.12-10.el4_8.1.i386.rpm
cyrus-imapd-debuginfo-2.2.12-10.el4_8.1.i386.rpm
cyrus-imapd-devel-2.2.12-10.el4_8.1.i386.rpm
cyrus-imapd-murder-2.2.12-10.el4_8.1.i386.rpm
cyrus-imapd-nntp-2.2.12-10.el4_8.1.i386.rpm
cyrus-imapd-utils-2.2.12-10.el4_8.1.i386.rpm
perl-Cyrus-2.2.12-10.el4_8.1.i386.rpm

ia64:
cyrus-imapd-2.2.12-10.el4_8.1.ia64.rpm
cyrus-imapd-debuginfo-2.2.12-10.el4_8.1.ia64.rpm
cyrus-imapd-devel-2.2.12-10.el4_8.1.ia64.rpm
cyrus-imapd-murder-2.2.12-10.el4_8.1.ia64.rpm
cyrus-imapd-nntp-2.2.12-10.el4_8.1.ia64.rpm
cyrus-imapd-utils-2.2.12-10.el4_8.1.ia64.rpm
perl-Cyrus-2.2.12-10.el4_8.1.ia64.rpm

x86_64:
cyrus-imapd-2.2.12-10.el4_8.1.x86_64.rpm
cyrus-imapd-debuginfo-2.2.12-10.el4_8.1.x86_64.rpm
cyrus-imapd-devel-2.2.12-10.el4_8.1.x86_64.rpm
cyrus-imapd-murder-2.2.12-10.el4_8.1.x86_64.rpm
cyrus-imapd-nntp-2.2.12-10.el4_8.1.x86_64.rpm
cyrus-imapd-utils-2.2.12-10.el4_8.1.x86_64.rpm
perl-Cyrus-2.2.12-10.el4_8.1.x86_64.rpm

Red Hat Enterprise Linux WS version 4:

Source:
ftp://updates.redhat.com/enterprise/4WS/en/os/SRPMS/cyrus-imapd-2.2.12-10.el4_8.1.src.rpm

i386:
cyrus-imapd-2.2.12-10.el4_8.1.i386.rpm
cyrus-imapd-debuginfo-2.2.12-10.el4_8.1.i386.rpm
cyrus-imapd-devel-2.2.12-10.el4_8.1.i386.rpm
cyrus-imapd-murder-2.2.12-10.el4_8.1.i386.rpm
cyrus-imapd-nntp-2.2.12-10.el4_8.1.i386.rpm
cyrus-imapd-utils-2.2.12-10.el4_8.1.i386.rpm
perl-Cyrus-2.2.12-10.el4_8.1.i386.rpm

ia64:
cyrus-imapd-2.2.12-10.el4_8.1.ia64.rpm
cyrus-imapd-debuginfo-2.2.12-10.el4_8.1.ia64.rpm
cyrus-imapd-devel-2.2.12-10.el4_8.1.ia64.rpm
cyrus-imapd-murder-2.2.12-10.el4_8.1.ia64.rpm
cyrus-imapd-nntp-2.2.12-10.el4_8.1.ia64.rpm
cyrus-imapd-utils-2.2.12-10.el4_8.1.ia64.rpm
perl-Cyrus-2.2.12-10.el4_8.1.ia64.rpm

x86_64:
cyrus-imapd-2.2.12-10.el4_8.1.x86_64.rpm
cyrus-imapd-debuginfo-2.2.12-10.el4_8.1.x86_64.rpm
cyrus-imapd-devel-2.2.12-10.el4_8.1.x86_64.rpm
cyrus-imapd-murder-2.2.12-10.el4_8.1.x86_64.rpm
cyrus-imapd-nntp-2.2.12-10.el4_8.1.x86_64.rpm
cyrus-imapd-utils-2.2.12-10.el4_8.1.x86_64.rpm
perl-Cyrus-2.2.12-10.el4_8.1.x86_64.rpm

RHEL Desktop Workstation (v. 5 client):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/cyrus-imapd-2.3.7-2.el5_3.2.src.rpm

i386:
cyrus-imapd-2.3.7-2.el5_3.2.i386.rpm
cyrus-imapd-debuginfo-2.3.7-2.el5_3.2.i386.rpm
cyrus-imapd-devel-2.3.7-2.el5_3.2.i386.rpm
cyrus-imapd-perl-2.3.7-2.el5_3.2.i386.rpm
cyrus-imapd-utils-2.3.7-2.el5_3.2.i386.rpm

x86_64:
cyrus-imapd-2.3.7-2.el5_3.2.x86_64.rpm
cyrus-imapd-debuginfo-2.3.7-2.el5_3.2.i386.rpm
cyrus-imapd-debuginfo-2.3.7-2.el5_3.2.x86_64.rpm
cyrus-imapd-devel-2.3.7-2.el5_3.2.i386.rpm
cyrus-imapd-devel-2.3.7-2.el5_3.2.x86_64.rpm
cyrus-imapd-perl-2.3.7-2.el5_3.2.x86_64.rpm
cyrus-imapd-utils-2.3.7-2.el5_3.2.x86_64.rpm

Red Hat Enterprise Linux (v. 5 server):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/cyrus-imapd-2.3.7-2.el5_3.2.src.rpm

i386:
cyrus-imapd-2.3.7-2.el5_3.2.i386.rpm
cyrus-imapd-debuginfo-2.3.7-2.el5_3.2.i386.rpm
cyrus-imapd-devel-2.3.7-2.el5_3.2.i386.rpm
cyrus-imapd-perl-2.3.7-2.el5_3.2.i386.rpm
cyrus-imapd-utils-2.3.7-2.el5_3.2.i386.rpm

ia64:
cyrus-imapd-2.3.7-2.el5_3.2.ia64.rpm
cyrus-imapd-debuginfo-2.3.7-2.el5_3.2.ia64.rpm
cyrus-imapd-devel-2.3.7-2.el5_3.2.ia64.rpm
cyrus-imapd-perl-2.3.7-2.el5_3.2.ia64.rpm
cyrus-imapd-utils-2.3.7-2.el5_3.2.ia64.rpm

ppc:
cyrus-imapd-2.3.7-2.el5_3.2.ppc.rpm
cyrus-imapd-debuginfo-2.3.7-2.el5_3.2.ppc.rpm
cyrus-imapd-debuginfo-2.3.7-2.el5_3.2.ppc64.rpm
cyrus-imapd-devel-2.3.7-2.el5_3.2.ppc.rpm
cyrus-imapd-devel-2.3.7-2.el5_3.2.ppc64.rpm
cyrus-imapd-perl-2.3.7-2.el5_3.2.ppc.rpm
cyrus-imapd-utils-2.3.7-2.el5_3.2.ppc.rpm

s390x:
cyrus-imapd-2.3.7-2.el5_3.2.s390x.rpm
cyrus-imapd-debuginfo-2.3.7-2.el5_3.2.s390.rpm
cyrus-imapd-debuginfo-2.3.7-2.el5_3.2.s390x.rpm
cyrus-imapd-devel-2.3.7-2.el5_3.2.s390.rpm
cyrus-imapd-devel-2.3.7-2.el5_3.2.s390x.rpm
cyrus-imapd-perl-2.3.7-2.el5_3.2.s390x.rpm
cyrus-imapd-utils-2.3.7-2.el5_3.2.s390x.rpm

x86_64:
cyrus-imapd-2.3.7-2.el5_3.2.x86_64.rpm
cyrus-imapd-debuginfo-2.3.7-2.el5_3.2.i386.rpm
cyrus-imapd-debuginfo-2.3.7-2.el5_3.2.x86_64.rpm
cyrus-imapd-devel-2.3.7-2.el5_3.2.i386.rpm
cyrus-imapd-devel-2.3.7-2.el5_3.2.x86_64.rpm
cyrus-imapd-perl-2.3.7-2.el5_3.2.x86_64.rpm
cyrus-imapd-utils-2.3.7-2.el5_3.2.x86_64.rpm

These packages are GPG signed by Red Hat for security.  Our key and 
details on how to verify the signature are available from
https://www.redhat.com/security/team/key/#package

7. References:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0688
http://www.redhat.com/security/updates/classification/#important

8. Contact:

The Red Hat security contact is <secalert@redhat.com>.  More contact
details at https://www.redhat.com/security/team/contact/

Copyright 2009 Red Hat, Inc.
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