SecurityTracker.com
    Home    |    View Topics    |    Search    |    Contact Us    |   

SecurityTracker
Archives


 


Category:   Application (E-mail Server)  >   Exim Vendors:   Exim.org
(Red Hat Issues Fix) Exim Buffer Overfow in string_format() Lets Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1024860
SecurityTracker URL:  http://securitytracker.com/id/1024860
CVE Reference:   CVE-2010-4344   (Links to External Site)
Date:  Dec 10 2010
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): prior to 4.70
Description:   A vulnerability was reported in Exim. A remote user can execute arbitrary code on the target system.

A remote user can send an e-mail message with a specially crafted header value to trigger a buffer overflow in string_format() and execute arbitrary code on the target system. The code will run with the privileges of the target service.

Electric Fence reported this vulnerability.

This vulnerability is being actively exploited.

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

The Red Hat advisory is available at:

https://rhn.redhat.com/errata/RHSA-2010-0970.html

Vendor URL:  www.exim.org/ (Links to External Site)
Cause:   Boundary error
Underlying OS:  Linux (Red Hat Enterprise)
Underlying OS Comments:  4, 5; also 4.7, 5.3, and 5.4 Extended Update Support

Message History:   This archive entry is a follow-up to the message listed below.
Dec 10 2010 Exim Buffer Overfow in string_format() Lets Remote Users Execute Arbitrary Code



 Source Message Contents

Subject:  [RHSA-2010:0970-01] Critical: exim security update

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

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

Synopsis:          Critical: exim security update
Advisory ID:       RHSA-2010:0970-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2010-0970.html
Issue date:        2010-12-10
CVE Names:         CVE-2010-4344 
=====================================================================

1. Summary:

Updated exim packages that fix one security issue are now available for
Red Hat Enterprise Linux 4 and 5, and Red Hat Enterprise Linux 4.7, 5.3,
and 5.4 Extended Update Support.

The Red Hat Security Response Team has rated this update as having critical
security impact. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available from the CVE link in
the References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64
Red Hat Enterprise Linux (v. 5.3.z server) - i386, ia64, ppc, s390x, x86_64
Red Hat Enterprise Linux (v. 5.4.z server) - i386, ia64, ppc, s390x, x86_64
Red Hat Enterprise Linux AS version 4 - i386, ia64, ppc, s390, s390x, x86_64
Red Hat Enterprise Linux AS version 4.7.z - i386, ia64, ppc, s390, s390x, x86_64
Red Hat Enterprise Linux Desktop (v. 5 client) - i386, 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 ES version 4.7.z - i386, ia64, x86_64
Red Hat Enterprise Linux WS version 4 - i386, ia64, x86_64

3. Description:

Exim is a mail transport agent (MTA) developed at the University of
Cambridge for use on Unix systems connected to the Internet.

A buffer overflow flaw was discovered in Exim's internal
string_vformat() function. A remote attacker could use this flaw to
execute arbitrary code on the mail server running Exim. (CVE-2010-4344)

Note: successful exploitation would allow a remote attacker to execute
arbitrary code as root on a Red Hat Enterprise Linux 4 or 5 system that
is running the Exim mail server. An exploit for this issue is known to
exist.

For additional information regarding this flaw, along with mitigation
advice, please see the Knowledge Base article linked to in the
References section of this advisory.

Users of Exim are advised to update to these erratum packages which
contain a backported patch to correct this issue. After installing this
update, the Exim daemon will be restarted automatically.

4. Solution:

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

This update is available via the 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/):

661756 - CVE-2010-4344 exim remote code execution flaw

6. Package List:

Red Hat Enterprise Linux AS version 4:

Source:
ftp://updates.redhat.com/enterprise/4AS/en/os/SRPMS/exim-4.43-1.RHEL4.5.el4_8.1.src.rpm

i386:
exim-4.43-1.RHEL4.5.el4_8.1.i386.rpm
exim-debuginfo-4.43-1.RHEL4.5.el4_8.1.i386.rpm
exim-doc-4.43-1.RHEL4.5.el4_8.1.i386.rpm
exim-mon-4.43-1.RHEL4.5.el4_8.1.i386.rpm
exim-sa-4.43-1.RHEL4.5.el4_8.1.i386.rpm

ia64:
exim-4.43-1.RHEL4.5.el4_8.1.ia64.rpm
exim-debuginfo-4.43-1.RHEL4.5.el4_8.1.ia64.rpm
exim-doc-4.43-1.RHEL4.5.el4_8.1.ia64.rpm
exim-mon-4.43-1.RHEL4.5.el4_8.1.ia64.rpm
exim-sa-4.43-1.RHEL4.5.el4_8.1.ia64.rpm

ppc:
exim-4.43-1.RHEL4.5.el4_8.1.ppc.rpm
exim-debuginfo-4.43-1.RHEL4.5.el4_8.1.ppc.rpm
exim-doc-4.43-1.RHEL4.5.el4_8.1.ppc.rpm
exim-mon-4.43-1.RHEL4.5.el4_8.1.ppc.rpm
exim-sa-4.43-1.RHEL4.5.el4_8.1.ppc.rpm

s390:
exim-4.43-1.RHEL4.5.el4_8.1.s390.rpm
exim-debuginfo-4.43-1.RHEL4.5.el4_8.1.s390.rpm
exim-doc-4.43-1.RHEL4.5.el4_8.1.s390.rpm
exim-mon-4.43-1.RHEL4.5.el4_8.1.s390.rpm
exim-sa-4.43-1.RHEL4.5.el4_8.1.s390.rpm

s390x:
exim-4.43-1.RHEL4.5.el4_8.1.s390x.rpm
exim-debuginfo-4.43-1.RHEL4.5.el4_8.1.s390x.rpm
exim-doc-4.43-1.RHEL4.5.el4_8.1.s390x.rpm
exim-mon-4.43-1.RHEL4.5.el4_8.1.s390x.rpm
exim-sa-4.43-1.RHEL4.5.el4_8.1.s390x.rpm

x86_64:
exim-4.43-1.RHEL4.5.el4_8.1.x86_64.rpm
exim-debuginfo-4.43-1.RHEL4.5.el4_8.1.x86_64.rpm
exim-doc-4.43-1.RHEL4.5.el4_8.1.x86_64.rpm
exim-mon-4.43-1.RHEL4.5.el4_8.1.x86_64.rpm
exim-sa-4.43-1.RHEL4.5.el4_8.1.x86_64.rpm

Red Hat Enterprise Linux AS version 4.7.z:

Source:
exim-4.43-1.RHEL4.5.el4_7.1.src.rpm

i386:
exim-4.43-1.RHEL4.5.el4_7.1.i386.rpm
exim-debuginfo-4.43-1.RHEL4.5.el4_7.1.i386.rpm
exim-doc-4.43-1.RHEL4.5.el4_7.1.i386.rpm
exim-mon-4.43-1.RHEL4.5.el4_7.1.i386.rpm
exim-sa-4.43-1.RHEL4.5.el4_7.1.i386.rpm

ia64:
exim-4.43-1.RHEL4.5.el4_7.1.ia64.rpm
exim-debuginfo-4.43-1.RHEL4.5.el4_7.1.ia64.rpm
exim-doc-4.43-1.RHEL4.5.el4_7.1.ia64.rpm
exim-mon-4.43-1.RHEL4.5.el4_7.1.ia64.rpm
exim-sa-4.43-1.RHEL4.5.el4_7.1.ia64.rpm

ppc:
exim-4.43-1.RHEL4.5.el4_7.1.ppc.rpm
exim-debuginfo-4.43-1.RHEL4.5.el4_7.1.ppc.rpm
exim-doc-4.43-1.RHEL4.5.el4_7.1.ppc.rpm
exim-mon-4.43-1.RHEL4.5.el4_7.1.ppc.rpm
exim-sa-4.43-1.RHEL4.5.el4_7.1.ppc.rpm

s390:
exim-4.43-1.RHEL4.5.el4_7.1.s390.rpm
exim-debuginfo-4.43-1.RHEL4.5.el4_7.1.s390.rpm
exim-doc-4.43-1.RHEL4.5.el4_7.1.s390.rpm
exim-mon-4.43-1.RHEL4.5.el4_7.1.s390.rpm
exim-sa-4.43-1.RHEL4.5.el4_7.1.s390.rpm

s390x:
exim-4.43-1.RHEL4.5.el4_7.1.s390x.rpm
exim-debuginfo-4.43-1.RHEL4.5.el4_7.1.s390x.rpm
exim-doc-4.43-1.RHEL4.5.el4_7.1.s390x.rpm
exim-mon-4.43-1.RHEL4.5.el4_7.1.s390x.rpm
exim-sa-4.43-1.RHEL4.5.el4_7.1.s390x.rpm

x86_64:
exim-4.43-1.RHEL4.5.el4_7.1.x86_64.rpm
exim-debuginfo-4.43-1.RHEL4.5.el4_7.1.x86_64.rpm
exim-doc-4.43-1.RHEL4.5.el4_7.1.x86_64.rpm
exim-mon-4.43-1.RHEL4.5.el4_7.1.x86_64.rpm
exim-sa-4.43-1.RHEL4.5.el4_7.1.x86_64.rpm

Red Hat Enterprise Linux Desktop version 4:

Source:
ftp://updates.redhat.com/enterprise/4Desktop/en/os/SRPMS/exim-4.43-1.RHEL4.5.el4_8.1.src.rpm

i386:
exim-4.43-1.RHEL4.5.el4_8.1.i386.rpm
exim-debuginfo-4.43-1.RHEL4.5.el4_8.1.i386.rpm
exim-doc-4.43-1.RHEL4.5.el4_8.1.i386.rpm
exim-mon-4.43-1.RHEL4.5.el4_8.1.i386.rpm
exim-sa-4.43-1.RHEL4.5.el4_8.1.i386.rpm

x86_64:
exim-4.43-1.RHEL4.5.el4_8.1.x86_64.rpm
exim-debuginfo-4.43-1.RHEL4.5.el4_8.1.x86_64.rpm
exim-doc-4.43-1.RHEL4.5.el4_8.1.x86_64.rpm
exim-mon-4.43-1.RHEL4.5.el4_8.1.x86_64.rpm
exim-sa-4.43-1.RHEL4.5.el4_8.1.x86_64.rpm

Red Hat Enterprise Linux ES version 4:

Source:
ftp://updates.redhat.com/enterprise/4ES/en/os/SRPMS/exim-4.43-1.RHEL4.5.el4_8.1.src.rpm

i386:
exim-4.43-1.RHEL4.5.el4_8.1.i386.rpm
exim-debuginfo-4.43-1.RHEL4.5.el4_8.1.i386.rpm
exim-doc-4.43-1.RHEL4.5.el4_8.1.i386.rpm
exim-mon-4.43-1.RHEL4.5.el4_8.1.i386.rpm
exim-sa-4.43-1.RHEL4.5.el4_8.1.i386.rpm

ia64:
exim-4.43-1.RHEL4.5.el4_8.1.ia64.rpm
exim-debuginfo-4.43-1.RHEL4.5.el4_8.1.ia64.rpm
exim-doc-4.43-1.RHEL4.5.el4_8.1.ia64.rpm
exim-mon-4.43-1.RHEL4.5.el4_8.1.ia64.rpm
exim-sa-4.43-1.RHEL4.5.el4_8.1.ia64.rpm

x86_64:
exim-4.43-1.RHEL4.5.el4_8.1.x86_64.rpm
exim-debuginfo-4.43-1.RHEL4.5.el4_8.1.x86_64.rpm
exim-doc-4.43-1.RHEL4.5.el4_8.1.x86_64.rpm
exim-mon-4.43-1.RHEL4.5.el4_8.1.x86_64.rpm
exim-sa-4.43-1.RHEL4.5.el4_8.1.x86_64.rpm

Red Hat Enterprise Linux ES version 4.7.z:

Source:
exim-4.43-1.RHEL4.5.el4_7.1.src.rpm

i386:
exim-4.43-1.RHEL4.5.el4_7.1.i386.rpm
exim-debuginfo-4.43-1.RHEL4.5.el4_7.1.i386.rpm
exim-doc-4.43-1.RHEL4.5.el4_7.1.i386.rpm
exim-mon-4.43-1.RHEL4.5.el4_7.1.i386.rpm
exim-sa-4.43-1.RHEL4.5.el4_7.1.i386.rpm

ia64:
exim-4.43-1.RHEL4.5.el4_7.1.ia64.rpm
exim-debuginfo-4.43-1.RHEL4.5.el4_7.1.ia64.rpm
exim-doc-4.43-1.RHEL4.5.el4_7.1.ia64.rpm
exim-mon-4.43-1.RHEL4.5.el4_7.1.ia64.rpm
exim-sa-4.43-1.RHEL4.5.el4_7.1.ia64.rpm

x86_64:
exim-4.43-1.RHEL4.5.el4_7.1.x86_64.rpm
exim-debuginfo-4.43-1.RHEL4.5.el4_7.1.x86_64.rpm
exim-doc-4.43-1.RHEL4.5.el4_7.1.x86_64.rpm
exim-mon-4.43-1.RHEL4.5.el4_7.1.x86_64.rpm
exim-sa-4.43-1.RHEL4.5.el4_7.1.x86_64.rpm

Red Hat Enterprise Linux WS version 4:

Source:
ftp://updates.redhat.com/enterprise/4WS/en/os/SRPMS/exim-4.43-1.RHEL4.5.el4_8.1.src.rpm

i386:
exim-4.43-1.RHEL4.5.el4_8.1.i386.rpm
exim-debuginfo-4.43-1.RHEL4.5.el4_8.1.i386.rpm
exim-doc-4.43-1.RHEL4.5.el4_8.1.i386.rpm
exim-mon-4.43-1.RHEL4.5.el4_8.1.i386.rpm
exim-sa-4.43-1.RHEL4.5.el4_8.1.i386.rpm

ia64:
exim-4.43-1.RHEL4.5.el4_8.1.ia64.rpm
exim-debuginfo-4.43-1.RHEL4.5.el4_8.1.ia64.rpm
exim-doc-4.43-1.RHEL4.5.el4_8.1.ia64.rpm
exim-mon-4.43-1.RHEL4.5.el4_8.1.ia64.rpm
exim-sa-4.43-1.RHEL4.5.el4_8.1.ia64.rpm

x86_64:
exim-4.43-1.RHEL4.5.el4_8.1.x86_64.rpm
exim-debuginfo-4.43-1.RHEL4.5.el4_8.1.x86_64.rpm
exim-doc-4.43-1.RHEL4.5.el4_8.1.x86_64.rpm
exim-mon-4.43-1.RHEL4.5.el4_8.1.x86_64.rpm
exim-sa-4.43-1.RHEL4.5.el4_8.1.x86_64.rpm

Red Hat Enterprise Linux Desktop (v. 5 client):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/exim-4.63-5.el5_5.2.src.rpm

i386:
exim-4.63-5.el5_5.2.i386.rpm
exim-debuginfo-4.63-5.el5_5.2.i386.rpm
exim-mon-4.63-5.el5_5.2.i386.rpm
exim-sa-4.63-5.el5_5.2.i386.rpm

x86_64:
exim-4.63-5.el5_5.2.x86_64.rpm
exim-debuginfo-4.63-5.el5_5.2.x86_64.rpm
exim-mon-4.63-5.el5_5.2.x86_64.rpm
exim-sa-4.63-5.el5_5.2.x86_64.rpm

Red Hat Enterprise Linux (v. 5 server):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/exim-4.63-5.el5_5.2.src.rpm

i386:
exim-4.63-5.el5_5.2.i386.rpm
exim-debuginfo-4.63-5.el5_5.2.i386.rpm
exim-mon-4.63-5.el5_5.2.i386.rpm
exim-sa-4.63-5.el5_5.2.i386.rpm

ia64:
exim-4.63-5.el5_5.2.ia64.rpm
exim-debuginfo-4.63-5.el5_5.2.ia64.rpm
exim-mon-4.63-5.el5_5.2.ia64.rpm
exim-sa-4.63-5.el5_5.2.ia64.rpm

ppc:
exim-4.63-5.el5_5.2.ppc.rpm
exim-debuginfo-4.63-5.el5_5.2.ppc.rpm
exim-mon-4.63-5.el5_5.2.ppc.rpm
exim-sa-4.63-5.el5_5.2.ppc.rpm

s390x:
exim-4.63-5.el5_5.2.s390x.rpm
exim-debuginfo-4.63-5.el5_5.2.s390x.rpm
exim-mon-4.63-5.el5_5.2.s390x.rpm
exim-sa-4.63-5.el5_5.2.s390x.rpm

x86_64:
exim-4.63-5.el5_5.2.x86_64.rpm
exim-debuginfo-4.63-5.el5_5.2.x86_64.rpm
exim-mon-4.63-5.el5_5.2.x86_64.rpm
exim-sa-4.63-5.el5_5.2.x86_64.rpm

Red Hat Enterprise Linux (v. 5.3.z server):

Source:
exim-4.63-3.el5_3.1.src.rpm

i386:
exim-4.63-3.el5_3.1.i386.rpm
exim-debuginfo-4.63-3.el5_3.1.i386.rpm
exim-mon-4.63-3.el5_3.1.i386.rpm
exim-sa-4.63-3.el5_3.1.i386.rpm

ia64:
exim-4.63-3.el5_3.1.ia64.rpm
exim-debuginfo-4.63-3.el5_3.1.ia64.rpm
exim-mon-4.63-3.el5_3.1.ia64.rpm
exim-sa-4.63-3.el5_3.1.ia64.rpm

ppc:
exim-4.63-3.el5_3.1.ppc.rpm
exim-debuginfo-4.63-3.el5_3.1.ppc.rpm
exim-mon-4.63-3.el5_3.1.ppc.rpm
exim-sa-4.63-3.el5_3.1.ppc.rpm

s390x:
exim-4.63-3.el5_3.1.s390x.rpm
exim-debuginfo-4.63-3.el5_3.1.s390x.rpm
exim-mon-4.63-3.el5_3.1.s390x.rpm
exim-sa-4.63-3.el5_3.1.s390x.rpm

x86_64:
exim-4.63-3.el5_3.1.x86_64.rpm
exim-debuginfo-4.63-3.el5_3.1.x86_64.rpm
exim-mon-4.63-3.el5_3.1.x86_64.rpm
exim-sa-4.63-3.el5_3.1.x86_64.rpm

Red Hat Enterprise Linux (v. 5.4.z server):

Source:
exim-4.63-3.el5_4.1.src.rpm

i386:
exim-4.63-3.el5_4.1.i386.rpm
exim-debuginfo-4.63-3.el5_4.1.i386.rpm
exim-mon-4.63-3.el5_4.1.i386.rpm
exim-sa-4.63-3.el5_4.1.i386.rpm

ia64:
exim-4.63-3.el5_4.1.ia64.rpm
exim-debuginfo-4.63-3.el5_4.1.ia64.rpm
exim-mon-4.63-3.el5_4.1.ia64.rpm
exim-sa-4.63-3.el5_4.1.ia64.rpm

ppc:
exim-4.63-3.el5_4.1.ppc.rpm
exim-debuginfo-4.63-3.el5_4.1.ppc.rpm
exim-mon-4.63-3.el5_4.1.ppc.rpm
exim-sa-4.63-3.el5_4.1.ppc.rpm

s390x:
exim-4.63-3.el5_4.1.s390x.rpm
exim-debuginfo-4.63-3.el5_4.1.s390x.rpm
exim-mon-4.63-3.el5_4.1.s390x.rpm
exim-sa-4.63-3.el5_4.1.s390x.rpm

x86_64:
exim-4.63-3.el5_4.1.x86_64.rpm
exim-debuginfo-4.63-3.el5_4.1.x86_64.rpm
exim-mon-4.63-3.el5_4.1.x86_64.rpm
exim-sa-4.63-3.el5_4.1.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://access.redhat.com/security/team/key/#package

7. References:

https://www.redhat.com/security/data/cve/CVE-2010-4344.html
https://access.redhat.com/security/updates/classification/#critical
https://access.redhat.com/kb/docs/DOC-43789

8. Contact:

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

Copyright 2010 Red Hat, Inc.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.4 (GNU/Linux)

iD8DBQFNAqBkXlSAg2UNWIIRAgQJAJ4/0QH12l/tNWqDVn6H/P/QRNao8ACglSHa
0VpPPGjixTVhdrIJLxMM3yk=
=GLUe
-----END PGP SIGNATURE-----


--
RHSA-announce mailing list
RHSA-announce@redhat.com
https://www.redhat.com/mailman/listinfo/rhsa-announce
 
 


Go to the Top of This SecurityTracker Archive Page





Home   |    View Topics   |    Search   |    Contact Us

This web site uses cookies for web analytics. Learn More

Copyright 2019, SecurityGlobal.net LLC