Executive Summary
| Summary | |
|---|---|
| Title | exim security update |
| Informations | |||
|---|---|---|---|
| Name | RHSA-2011:0153 | First vendor Publication | 2011-01-17 |
| Vendor | RedHat | Last vendor Modification | 2011-01-17 |
| Severity (Vendor) | Moderate | 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:L/AC:M/Au:N/C:C/I:C/A:C) | |||
|---|---|---|---|
| Cvss Base Score | 6.9 | Attack Range | Local |
| Cvss Impact Score | 10 | Attack Complexity | Medium |
| Cvss Expoit Score | 3.4 | Authentication | None Required |
| Calculate full CVSS 2.0 Vectors scores | |||
Detail
| Problem Description: Updated exim packages that fix one security issue are now available for Red Hat Enterprise Linux 4 and 5. The Red Hat Security Response Team has rated this update as having moderate 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 AS version 4 - 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 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 privilege escalation flaw was discovered in Exim. If an attacker were able to gain access to the "exim" user, they could cause Exim to execute arbitrary commands as the root user. (CVE-2010-4345) This update adds a new configuration file, "/etc/exim/trusted-configs". To prevent Exim from running arbitrary commands as root, Exim will now drop privileges when run with a configuration file not listed as trusted. This could break backwards compatibility with some Exim configurations, as the trusted-configs file only trusts "/etc/exim/exim.conf" and "/etc/exim/exim4.conf" by default. If you are using a configuration file not listed in the new trusted-configs file, you will need to add it manually. Additionally, Exim will no longer allow a user to execute exim as root with the -D command line option to override macro definitions. All macro definitions that require root permissions must now reside in a trusted configuration file. Users of Exim are advised to upgrade to these updated 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/): 662012 - CVE-2010-4345 exim privilege escalation |
Original Source
| Url : https://rhn.redhat.com/errata/RHSA-2011-0153.html |
CWE : Common Weakness Enumeration
| % | Id | Name |
|---|---|---|
| 100 % | CWE-264 | Permissions, Privileges, and Access Controls |
OVAL Definitions
| Definition Id: oval:org.mitre.oval:def:12720 | |||
| Oval ID: | oval:org.mitre.oval:def:12720 | ||
| Title: | DSA-2131-1 exim4 -- arbitrary code execution | ||
| Description: | Several vulnerabilities have been found in exim4 that allow a remote attacker to execute arbitrary code as root user. Exploits for these issues have been seen in the wild. This update fixes a memory corruption issue that allows a remote attacker to execute arbitrary code as the Debian-exim user. A fix for an additional issue that allows the Debian-exim user to obtain root privileges is currently being checked for compatibility issues. It is not yet included in this upgrade but will released soon in an update to this advisory. For the stable distribution, this problem has been fixed in version 4.69-9+lenny1. This advisory only contains the packages for the alpha, amd64, hppa, i386, ia64, powerpc, and s390 architectures. The packages for the arm, armel, mips, mipsel, and sparc architectures will be released as soon as they are built. For the testing distribution and the unstable distribution, this problem has been fixed in version 4.70-1. We strongly recommend that you upgrade your exim4 packages. | ||
| Family: | unix | Class: | patch |
| Reference(s): | DSA-2131-1 CVE-2010-4344 CVE-2010-4345 | Version: | 5 |
| Platform(s): | Debian GNU/Linux 5.0 | Product(s): | exim4 |
| Definition Synopsis: | |||
| |||
| Definition Id: oval:org.mitre.oval:def:21735 | |||
| Oval ID: | oval:org.mitre.oval:def:21735 | ||
| Title: | RHSA-2011:0153: exim security update (Moderate) | ||
| Description: | Exim 4.72 and earlier allows local users to gain privileges by leveraging the ability of the exim user account to specify an alternate configuration file with a directive that contains arbitrary commands, as demonstrated by the spool_directory directive. | ||
| Family: | unix | Class: | patch |
| Reference(s): | RHSA-2011:0153-01 CESA-2011:0153 CVE-2010-4345 | Version: | 4 |
| Platform(s): | Red Hat Enterprise Linux 5 CentOS Linux 5 | Product(s): | exim |
| Definition Synopsis: | |||
| |||
| Definition Id: oval:org.mitre.oval:def:22839 | |||
| Oval ID: | oval:org.mitre.oval:def:22839 | ||
| Title: | ELSA-2011:0153: exim security update (Moderate) | ||
| Description: | Exim 4.72 and earlier allows local users to gain privileges by leveraging the ability of the exim user account to specify an alternate configuration file with a directive that contains arbitrary commands, as demonstrated by the spool_directory directive. | ||
| Family: | unix | Class: | patch |
| Reference(s): | ELSA-2011:0153-01 CVE-2010-4345 | Version: | 6 |
| Platform(s): | Oracle Linux 5 | Product(s): | exim |
| Definition Synopsis: | |||
CPE : Common Platform Enumeration
ExploitDB Exploits
| id | Description |
|---|---|
| 2010-12-16 | Exim4 <= 4.69 string_format Function Heap Buffer Overflow |
OpenVAS Exploits
| Date | Description |
|---|---|
| 2012-07-30 | Name : CentOS Update for exim CESA-2011:0153 centos4 x86_64 File : nvt/gb_CESA-2011_0153_exim_centos4_x86_64.nasl |
| 2012-07-30 | Name : CentOS Update for exim CESA-2011:0153 centos5 x86_64 File : nvt/gb_CESA-2011_0153_exim_centos5_x86_64.nasl |
| 2011-08-09 | Name : CentOS Update for exim CESA-2011:0153 centos5 i386 File : nvt/gb_CESA-2011_0153_exim_centos5_i386.nasl |
| 2011-02-11 | Name : Ubuntu Update for exim4 vulnerabilities USN-1060-1 File : nvt/gb_ubuntu_USN_1060_1.nasl |
| 2011-01-31 | Name : CentOS Update for exim CESA-2011:0153 centos4 i386 File : nvt/gb_CESA-2011_0153_exim_centos4_i386.nasl |
| 2011-01-24 | Name : FreeBSD Ports: exim File : nvt/freebsd_exim1.nasl |
| 2011-01-21 | Name : RedHat Update for exim RHSA-2011:0153-01 File : nvt/gb_RHSA-2011_0153-01_exim.nasl |
| 2011-01-04 | Name : SuSE Update for exim SUSE-SA:2010:059 File : nvt/gb_suse_2010_059.nasl |
Open Source Vulnerability Database (OSVDB)
| Id | Description |
|---|---|
| 69860 | Exim exim User Account Configuration File Directive Local Privilege Escalation Exim contains a flaw that may allow an attacker to gain access to unauthorized privileges. The issue is triggered when an attacker leverages the ability of an exim user account to specify an alternate configuration file with a directive that contains arbitrary commands, allowing a local attacker to gain root privileges. |
Nessus® Vulnerability Scanner
| Date | Description |
|---|---|
| 2014-06-13 | Name : The remote openSUSE host is missing a security update. File : suse_11_3_exim-101211.nasl - Type : ACT_GATHER_INFO |
| 2014-01-28 | Name : The remote Gentoo host is missing one or more security-related patches. File : gentoo_GLSA-201401-32.nasl - Type : ACT_GATHER_INFO |
| 2013-07-12 | Name : The remote Oracle Linux host is missing one or more security updates. File : oraclelinux_ELSA-2011-0153.nasl - Type : ACT_GATHER_INFO |
| 2012-08-01 | Name : The remote Scientific Linux host is missing one or more security updates. File : sl_20110117_exim_on_SL4_x.nasl - Type : ACT_GATHER_INFO |
| 2011-05-05 | Name : The remote openSUSE host is missing a security update. File : suse_11_1_exim-101211.nasl - Type : ACT_GATHER_INFO |
| 2011-05-05 | Name : The remote openSUSE host is missing a security update. File : suse_11_2_exim-101211.nasl - Type : ACT_GATHER_INFO |
| 2011-02-11 | Name : The remote Ubuntu host is missing one or more security-related patches. File : ubuntu_USN-1060-1.nasl - Type : ACT_GATHER_INFO |
| 2011-01-31 | Name : The remote Debian host is missing a security-related update. File : debian_DSA-2154.nasl - Type : ACT_GATHER_INFO |
| 2011-01-28 | Name : The remote CentOS host is missing one or more security updates. File : centos_RHSA-2011-0153.nasl - Type : ACT_GATHER_INFO |
| 2011-01-18 | Name : The remote Red Hat host is missing one or more security updates. File : redhat-RHSA-2011-0153.nasl - Type : ACT_GATHER_INFO |
| 2011-01-10 | Name : The remote FreeBSD host is missing a security-related update. File : freebsd_pkg_e4fcf020044711e0becc0022156e8794.nasl - Type : ACT_GATHER_INFO |
| 2010-12-15 | Name : The remote service has a buffer overflow. File : exim_string_vformat.nasl - Type : ACT_ATTACK |
| 2010-12-12 | Name : The remote Debian host is missing a security-related update. File : debian_DSA-2131.nasl - Type : ACT_GATHER_INFO |
Alert History
| Date | Informations |
|---|---|
| 2014-02-17 11:54:15 |
|
