Executive Summary
| Summary | |
|---|---|
| Title | exim4 vulnerabilities |
| Informations | |||
|---|---|---|---|
| Name | USN-56-1 | First vendor Publication | 2005-01-07 |
| Vendor | Ubuntu | Last vendor Modification | 2005-01-07 |
| Severity (Vendor) | N/A | Revision | N/A |
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:L/Au:N/C:C/I:C/A:C) | |||
|---|---|---|---|
| Cvss Base Score | 7.2 | Attack Range | Local |
| Cvss Impact Score | 10 | Attack Complexity | Low |
| Cvss Expoit Score | 3.9 | Authentication | None Required |
| Calculate full CVSS 2.0 Vectors scores | |||
Detail
| A security issue affects the following Ubuntu releases: Ubuntu 4.10 (Warty Warthog) The following packages are affected: exim4-daemon-heavy exim4-daemon-light The problem can be corrected by upgrading the affected package to version 4.34-5ubuntu1.1. In general, a standard system upgrade is sufficient to effect the necessary changes. Details follow: A flaw has been found in the host_aton() function, which can overflow a buffer if it is presented with an illegal IPv6 address that has more than 8 components. When supplying certain command line parameters, the input was not checked, so that a local attacker could possibly exploit the buffer overflow to run arbitrary code with the privileges of the Exim mail server. (CAN-2005-0021) Additionally, the BASE64 decoder in the SPA authentication handler did not check the size of its output buffer. By sending an invalid BASE64 authentication string, a remote attacker could overflow the buffer, which could possibly be exploited to run arbitrary code with the privileges of the Exim mail server. (CAN-2005-0022) |
Original Source
| Url : http://www.ubuntu.com/usn/USN-56-1 |
OVAL Definitions
| Definition Id: oval:org.mitre.oval:def:10347 | |||
| Oval ID: | oval:org.mitre.oval:def:10347 | ||
| Title: | Perl-Compatible Regular Expression (PCRE) library before 7.3 allows context-dependent attackers to cause a denial of service (crash) and possibly execute arbitrary code via regex patterns containing unmatched "\Q\E" sequences with orphan "\E" codes. | ||
| Description: | Multiple buffer overflows in Exim before 4.43 may allow attackers to execute arbitrary code via (1) an IPv6 address with more than 8 components, as demonstrated using the -be command line option, which triggers an overflow in the host_aton function, or (2) the -bh command line option or dnsdb PTR lookup, which triggers an overflow in the dns_build_reverse function. | ||
| Family: | unix | Class: | vulnerability |
| Reference(s): | CVE-2005-0021 | Version: | 5 |
| Platform(s): | Red Hat Enterprise Linux 4 CentOS Linux 4 Oracle Linux 4 | Product(s): | |
| Definition Synopsis: | |||
| |||
| Definition Id: oval:org.mitre.oval:def:11293 | |||
| Oval ID: | oval:org.mitre.oval:def:11293 | ||
| Title: | Perl-Compatible Regular Expression (PCRE) library before 7.3 allows context-dependent attackers to cause a denial of service (crash) and possibly execute arbitrary code via regex patterns containing unmatched "\Q\E" sequences with orphan "\E" codes. | ||
| Description: | Buffer overflow in the spa_base64_to_bits function in Exim before 4.43, as originally obtained from Samba code, and as called by the auth_spa_client function, may allow attackers to execute arbitrary code during SPA authentication. | ||
| Family: | unix | Class: | vulnerability |
| Reference(s): | CVE-2005-0022 | Version: | 5 |
| Platform(s): | Red Hat Enterprise Linux 4 CentOS Linux 4 Oracle Linux 4 | Product(s): | |
| Definition Synopsis: | |||
| |||
CPE : Common Platform Enumeration
OpenVAS Exploits
| Date | Description |
|---|---|
| 2008-09-24 | Name : Gentoo Security Advisory GLSA 200501-23 (exim) File : nvt/glsa_200501_23.nasl |
| 2008-09-04 | Name : exim -- two buffer overflow vulnerabilities File : nvt/freebsd_exim.nasl |
| 2008-01-17 | Name : Debian Security Advisory DSA 635-1 (exim) File : nvt/deb_635_1.nasl |
| 2008-01-17 | Name : Debian Security Advisory DSA 637-1 (exim-tls) File : nvt/deb_637_1.nasl |
Open Source Vulnerability Database (OSVDB)
| Id | Description |
|---|---|
| 12946 | Exim -bh Command Line Option dns_build_reverse Function Local Overflow A local overflow exists in Exim. Exim fails to check the length of a string resulting in a buffer overflow in the dns_build_reverse() function. Exim drops SUID privileges before the vulnerable code is reached. With a specially crafted request, an attacker can further escalate privileges or retrieve the mailer uid to access email messages, resulting in a loss of integrity and confidentiality. |
| 12727 | Exim SPA Authentication spa_base64_to_bits Function Remote Overflow A remote overflow exists in Exim. Exim fails to have sufficient boundary checks in the 'spa_base64_to_bits()' function resulting in a buffer overflow. With a specially crafted request, an attacker can execute arbitrary code in the context of the affected application resulting in a loss of integrity. |
| 12726 | Exim -be Command Line Option host_aton Function Local Overflow A remote overflow exists in Exim. Exim fails to properly check input to host_aton() resulting in a buffer overflow. With a specially crafted request of an IPv6 address with more than 8 components, an attacker can cause execution of arbitrary code resulting in a loss of integrity. |
Snort® IPS/IDS
| Date | Description |
|---|---|
| 2014-01-10 | AUTH user overflow attempt RuleID : 3824 - Revision : 16 - Type : SERVER-MAIL |
Nessus® Vulnerability Scanner
| Date | Description |
|---|---|
| 2012-09-24 | Name : The remote Fedora Core host is missing a security update. File : fedora_2005-002.nasl - Type : ACT_GATHER_INFO |
| 2006-01-15 | Name : The remote Ubuntu host is missing one or more security-related patches. File : ubuntu_USN-56-1.nasl - Type : ACT_GATHER_INFO |
| 2005-07-13 | Name : The remote FreeBSD host is missing one or more security-related updates. File : freebsd_pkg_ca9ce8795ebb11d9a01c0050569f0001.nasl - Type : ACT_GATHER_INFO |
| 2005-02-22 | Name : The remote Red Hat host is missing one or more security updates. File : redhat-RHSA-2005-025.nasl - Type : ACT_GATHER_INFO |
| 2005-02-14 | Name : The remote Gentoo host is missing one or more security-related patches. File : gentoo_GLSA-200501-23.nasl - Type : ACT_GATHER_INFO |
| 2005-01-13 | Name : The remote Debian host is missing a security-related update. File : debian_DSA-637.nasl - Type : ACT_GATHER_INFO |
| 2005-01-12 | Name : The remote Debian host is missing a security-related update. File : debian_DSA-635.nasl - Type : ACT_GATHER_INFO |
| 2005-01-07 | Name : The remote mail server is vulnerable to a buffer overflow attack. File : exim_spa_ipv6_overflow.nasl - Type : ACT_GATHER_INFO |
| 2005-01-07 | Name : The remote Fedora Core host is missing a security update. File : fedora_2005-001.nasl - Type : ACT_GATHER_INFO |
Alert History
| Date | Informations |
|---|---|
| 2014-02-17 12:04:51 |
|
