IBM AIX sendmail.cf could allow an attacker to perform mail relaying
| aix-sendmail-mail-relay (11993) |  Medium Risk |
Description:
Multiple versions of IBM AIX ship with the sendmail.cf file that allows open SMTP relay. A remote attacker could use this vulnerability to perform mail relaying.
Platforms Affected:
- IBM, AIX 4.3.3
- IBM, AIX 5.1
- IBM, AIX 5.2
Remedy:
For IBM AIX:
Apply the appropriate changes for your system, as listed in IBM SECURITY ADVISORY Wed Jun 4 19:50:11 CDT 2003 for more information. See References.
Consequences:
Other
References:
- BugTraq Mailing List, Tue May 13 2003 - 11:53:53 CDT , AIX sendmail open relay at http://archives.neohapsis.com/archives/bugtraq/2003-05/0137.html.
- BID-7580: AIX Sendmail Open Relay Default Configuration Weakness
- CVE-2003-0285: IBM AIX 5.2 and earlier distributes Sendmail with a configuration file (sendmail.cf) with the (1) promiscuous_relay, (2) accept_unresolvable_domains, and (3) accept_unqualified_senders features enabled, which allows Sendmail to be used as an open mail relay for sending spam e-mail.
- US-CERT VU#814617: IBM AIX sendmail configured as open mail relay by default
Reported:
May 13, 2003
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