Executive Summary

Summary
Title sendmail security and bug fix update
Informations
Name RHSA-2011:0262 First vendor Publication 2011-02-16
Vendor RedHat Last vendor Modification 2011-02-16
Severity (Vendor) Low Revision 01

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:P/I:P/A:P)
Cvss Base Score 7.5 Attack Range Network
Cvss Impact Score 6.4 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Problem Description:

Updated sendmail packages that fix one security issue and three bugs are now available for Red Hat Enterprise Linux 4.

The Red Hat Security Response Team has rated this update as having low 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 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

3. Description:

Sendmail is a Mail Transport Agent (MTA) used to send mail between machines.

A flaw was found in the way sendmail handled NUL characters in the CommonName field of X.509 certificates. An attacker able to get a carefully-crafted certificate signed by a trusted Certificate Authority could trick sendmail into accepting it by mistake, allowing the attacker to perform a man-in-the-middle attack or bypass intended client certificate authentication. (CVE-2009-4565)

The CVE-2009-4565 issue only affected configurations using TLS with certificate verification and CommonName checking enabled, which is not a typical configuration.

This update also fixes the following bugs:

* Previously, sendmail did not correctly handle mail messages that had a long first header line. A line with more than 2048 characters was split, causing the part of the line exceeding the limit, as well as all of the following mail headers, to be incorrectly handled as the message body. (BZ#499450)

* When an SMTP-sender is sending mail data to sendmail, it may spool that data to a file in the mail queue. It was found that, if the SMTP-sender stopped sending data and a timeout occurred, the file may have been left stalled in the mail queue, instead of being deleted. This update may not correct this issue for every situation and configuration. Refer to the Solution section for further information. (BZ#434645)

* Previously, the sendmail macro MAXHOSTNAMELEN used 64 characters as the limit for the hostname length. However, in some cases, it was used against an FQDN length, which has a maximum length of 255 characters. With this update, the MAXHOSTNAMELEN limit has been changed to 255. (BZ#485380)

All sendmail users should upgrade to these updated packages, which contain backported patches to correct these issues. After installing this update, sendmail will be restarted automatically.

4. Solution:

As part of the fix for BZ#434645, a script called purge-mqueue is shipped with this update. It is located in the /usr/share/sendmail/ directory. The primary purpose of this script is a one-time clean up of the mqueue from stalled files that were created before the installation of this update. By default, the script removes all files from /var/spool/mqueue/ that have an atime older than one month. It requires the tmpwatch package to be installed. If you have stalled files in your mqueue you can run this script or clean them manually. It is also possible to use this script as a cron job (for example, by copying it to /etc/cron.daily/), but it should not be needed in most cases, because this update should prevent the creation of new stalled files.

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/):

434645 - DATA timeouts leave behind stale df files in mqueue 485380 - sendmail applies MAXHOSTNAMELEN for FQDN. 552622 - CVE-2009-4565 sendmail: incorrect verification of SSL certificate with NUL in name

Original Source

Url : https://rhn.redhat.com/errata/RHSA-2011-0262.html

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-310 Cryptographic Issues

OVAL Definitions

Definition Id: oval:org.mitre.oval:def:10255
 
Oval ID: oval:org.mitre.oval:def:10255
Title: sendmail before 8.14.4 does not properly handle a '\0' character in a Common Name (CN) field of an X.509 certificate, which (1) allows man-in-the-middle attackers to spoof arbitrary SSL-based SMTP servers via a crafted server certificate issued by a legitimate Certification Authority, and (2) allows remote attackers to bypass intended access restrictions via a crafted client certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.
Description: sendmail before 8.14.4 does not properly handle a '\0' character in a Common Name (CN) field of an X.509 certificate, which (1) allows man-in-the-middle attackers to spoof arbitrary SSL-based SMTP servers via a crafted server certificate issued by a legitimate Certification Authority, and (2) allows remote attackers to bypass intended access restrictions via a crafted client certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.
Family: unix Class: vulnerability
Reference(s): CVE-2009-4565
Version: 5
Platform(s): Red Hat Enterprise Linux 5
CentOS Linux 5
Oracle Linux 5
Product(s):
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:11822
 
Oval ID: oval:org.mitre.oval:def:11822
Title: HP-UX Running sendmail with STARTTLS Enabled, Remote Unauthorized Access.
Description: sendmail before 8.14.4 does not properly handle a '\0' character in a Common Name (CN) field of an X.509 certificate, which (1) allows man-in-the-middle attackers to spoof arbitrary SSL-based SMTP servers via a crafted server certificate issued by a legitimate Certification Authority, and (2) allows remote attackers to bypass intended access restrictions via a crafted client certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.
Family: unix Class: vulnerability
Reference(s): CVE-2009-4565
Version: 11
Platform(s): HP-UX 11
Product(s):
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:20232
 
Oval ID: oval:org.mitre.oval:def:20232
Title: DSA-1985-1 sendmail - insufficient input validation
Description: It was discovered that sendmail, a Mail Transport Agent, does not properly handle a '\0' character in a Common Name (CN) field of an X.509 certificate.
Family: unix Class: patch
Reference(s): DSA-1985-1
CVE-2009-4565
Version: 5
Platform(s): Debian GNU/Linux 4.0
Debian GNU/Linux 5.0
Product(s): sendmail
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:22058
 
Oval ID: oval:org.mitre.oval:def:22058
Title: RHSA-2010:0237: sendmail security and bug fix update (Low)
Description: sendmail before 8.14.4 does not properly handle a '\0' character in a Common Name (CN) field of an X.509 certificate, which (1) allows man-in-the-middle attackers to spoof arbitrary SSL-based SMTP servers via a crafted server certificate issued by a legitimate Certification Authority, and (2) allows remote attackers to bypass intended access restrictions via a crafted client certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.
Family: unix Class: patch
Reference(s): RHSA-2010:0237-05
CVE-2006-7176
CVE-2009-4565
Version: 29
Platform(s): Red Hat Enterprise Linux 5
Product(s): sendmail
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:23064
 
Oval ID: oval:org.mitre.oval:def:23064
Title: ELSA-2010:0237: sendmail security and bug fix update (Low)
Description: sendmail before 8.14.4 does not properly handle a '\0' character in a Common Name (CN) field of an X.509 certificate, which (1) allows man-in-the-middle attackers to spoof arbitrary SSL-based SMTP servers via a crafted server certificate issued by a legitimate Certification Authority, and (2) allows remote attackers to bypass intended access restrictions via a crafted client certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.
Family: unix Class: patch
Reference(s): ELSA-2010:0237-05
CVE-2006-7176
CVE-2009-4565
Version: 13
Platform(s): Oracle Linux 5
Product(s): sendmail
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:27847
 
Oval ID: oval:org.mitre.oval:def:27847
Title: DEPRECATED: ELSA-2010-0237 -- sendmail security and bug fix update (low)
Description: [8.13.8-8] - rpm attributes S,5,T not recorded for statistics file [8.13.8-7] - fix specfile for passing rpm -V test (#555277) [8.13.8-6.el5] - fix verification of SSL certificate with NUL in name (#553618, CVE-2009-4565) - do not accept localhost.localdomain as valid address from smtp (#449391) - skip colon separator when parsing service name in ServiceSwitchFile (#512871) - exit with non-zero error code when free space is low (#299951) - fix -qG description in man page (#250552) - fix comments in sendmail.mc to use correct certs path (#244012) - add MTA to provides (#494408) - fix %dist macro use (#440616) - compile with -fno-strict-aliasing - skip t-sem test as it doesn't allow parallel testing
Family: unix Class: patch
Reference(s): ELSA-2010-0237
CVE-2006-7176
CVE-2009-4565
Version: 4
Platform(s): Oracle Linux 5
Product(s): sendmail
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:6719
 
Oval ID: oval:org.mitre.oval:def:6719
Title: DSA-1985 sendmail -- insufficient input validation
Description: It was discovered that sendmail, a Mail Transport Agent, does not properly handle a "\0" character in a Common Name field of an X.509 certificate. This allows an attacker to spoof arbitrary SSL-based SMTP servers via a crafted server certificate issued by a legitimate Certification Authority, and to bypass intended access restrictions via a crafted client certificate issued by a legitimate Certification Authority.
Family: unix Class: patch
Reference(s): DSA-1985
CVE-2009-4565
Version: 5
Platform(s): Debian GNU/Linux 5.0
Debian GNU/Linux 4.0
Product(s): sendmail
Definition Synopsis:

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 73

OpenVAS Exploits

Date Description
2012-08-10 Name : Gentoo Security Advisory GLSA 201206-30 (sendmail)
File : nvt/glsa_201206_30.nasl
2011-02-18 Name : RedHat Update for sendmail RHSA-2011:0262-01
File : nvt/gb_RHSA-2011_0262-01_sendmail.nasl
2010-06-25 Name : Fedora Update for sendmail FEDORA-2010-5470
File : nvt/gb_fedora_2010_5470_sendmail_fc12.nasl
2010-06-18 Name : Fedora Update for sendmail FEDORA-2010-5399
File : nvt/gb_fedora_2010_5399_sendmail_fc11.nasl
2010-04-06 Name : RedHat Update for sendmail RHSA-2010:0237-05
File : nvt/gb_RHSA-2010_0237-05_sendmail.nasl
2010-03-31 Name : HP-UX Update for sendmail with STARTTLS Enabled HPSBUX02508
File : nvt/gb_hp_ux_HPSBUX02508.nasl
2010-01-19 Name : Mandriva Update for sendmail MDVSA-2010:003 (sendmail)
File : nvt/gb_mandriva_MDVSA_2010_003.nasl
2010-01-04 Name : Sendmail NULL Character CA SSL Certificate Validation Security Bypass Vulnera...
File : nvt/sendmail_37543.nasl

Open Source Vulnerability Database (OSVDB)

Id Description
62373 Sendmail X.509 Certificate Null Character MiTM Spoofing Weakness

Information Assurance Vulnerability Management (IAVM)

Date Description
2010-01-07 IAVM : 2010-A-0002 - Sendmail SSL Certificate Validation Vulnerability
Severity : Category I - VMSKEY : V0022182

Nessus® Vulnerability Scanner

Date Description
2013-07-12 Name : The remote Oracle Linux host is missing one or more security updates.
File : oraclelinux_ELSA-2011-0262.nasl - Type : ACT_GATHER_INFO
2013-01-24 Name : The remote AIX host is missing a security patch.
File : aix_IZ72510.nasl - Type : ACT_GATHER_INFO
2013-01-24 Name : The remote AIX host is missing a security patch.
File : aix_IZ72837.nasl - Type : ACT_GATHER_INFO
2013-01-24 Name : The remote AIX host is missing a security patch.
File : aix_IZ72836.nasl - Type : ACT_GATHER_INFO
2013-01-24 Name : The remote AIX host is missing a security patch.
File : aix_IZ72835.nasl - Type : ACT_GATHER_INFO
2013-01-24 Name : The remote AIX host is missing a security patch.
File : aix_IZ72528.nasl - Type : ACT_GATHER_INFO
2013-01-24 Name : The remote AIX host is missing a security patch.
File : aix_IZ72515.nasl - Type : ACT_GATHER_INFO
2013-01-24 Name : The remote AIX host is missing a security patch.
File : aix_IZ72834.nasl - Type : ACT_GATHER_INFO
2013-01-24 Name : The remote AIX host is missing a security patch.
File : aix_IZ70637.nasl - Type : ACT_GATHER_INFO
2012-08-01 Name : The remote Scientific Linux host is missing one or more security updates.
File : sl_20110216_sendmail_on_SL4_x.nasl - Type : ACT_GATHER_INFO
2012-08-01 Name : The remote Scientific Linux host is missing one or more security updates.
File : sl_20100330_sendmail_on_SL5_x.nasl - Type : ACT_GATHER_INFO
2012-06-26 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-201206-30.nasl - Type : ACT_GATHER_INFO
2011-04-22 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2011-0262.nasl - Type : ACT_GATHER_INFO
2010-10-11 Name : The remote SuSE 10 host is missing a security-related patch.
File : suse_sendmail-6860.nasl - Type : ACT_GATHER_INFO
2010-07-01 Name : The remote Fedora host is missing a security update.
File : fedora_2010-5470.nasl - Type : ACT_GATHER_INFO
2010-07-01 Name : The remote Fedora host is missing a security update.
File : fedora_2010-5399.nasl - Type : ACT_GATHER_INFO
2010-05-11 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2010-0237.nasl - Type : ACT_GATHER_INFO
2010-03-02 Name : The remote SuSE 9 host is missing a security-related patch.
File : suse9_12590.nasl - Type : ACT_GATHER_INFO
2010-03-01 Name : The remote openSUSE host is missing a security update.
File : suse_11_0_rmail-100218.nasl - Type : ACT_GATHER_INFO
2010-03-01 Name : The remote openSUSE host is missing a security update.
File : suse_11_1_rmail-100218.nasl - Type : ACT_GATHER_INFO
2010-03-01 Name : The remote openSUSE host is missing a security update.
File : suse_11_2_rmail-100218.nasl - Type : ACT_GATHER_INFO
2010-03-01 Name : The remote SuSE 11 host is missing a security update.
File : suse_11_rmail-100218.nasl - Type : ACT_GATHER_INFO
2010-03-01 Name : The remote SuSE 10 host is missing a security-related patch.
File : suse_sendmail-6859.nasl - Type : ACT_GATHER_INFO
2010-02-24 Name : The remote Debian host is missing a security-related update.
File : debian_DSA-1985.nasl - Type : ACT_GATHER_INFO
2010-01-13 Name : The remote Mandriva Linux host is missing one or more security updates.
File : mandriva_MDVSA-2010-003.nasl - Type : ACT_GATHER_INFO
2010-01-05 Name : The remote mail server is susceptible to a man-in-the-middle attack.
File : sendmail_8_14_4.nasl - Type : ACT_GATHER_INFO

Alert History

If you want to see full details history, please login or register.
0
Date Informations
2014-02-17 11:54:22
  • Multiple Updates