B21Soft BASP21 and BASP21 Pro BSMTP.DLL mail relay

basp21-bsmtp-mail-relay (33211)

Low Risk

Description:

B21Soft BASP21 and BASP21 Pro could be used as an open mail relay, caused by improper validation of user-supplied input by BSMTP.DLL. A remote attacker could exploit this vulnerability using CRLF sequences to bypass security restrictions and inject arbitrary mail headers, which would allow the attacker to send spoofed emails.

*CVSS:

Base Score:	3.5
Access Vector:	Remote
Access Complexity:	Low
Authentication:	Not Required
Confidentiality Impact:	None
Integrity Impact:	Partial
Availability Impact:	None
Temporal Score:	2.6
Exploitability:	Unproven
Remediation Level:	Official-Fix
Report Confidence:	Confirmed

Consequences:

Bypass Security

Remedy:

Refer to JVN#86092776 for patch, upgrade, or suggested workaround information. See References.

References:

• B21Soft Web site: B21Soft BASP21.
• B21Soft Web site: BASP21 Pro.
• JVN#86092776: BASP21.
• BID-23134: B21Soft BASP21 BSMTP.DLL CRLF Injection Vulnerability
• CVE-2007-1713: CRLF injection vulnerability in BSMTP.DLL in B21Soft BASP21 2003.0211, and BASP21 Pro 1.0.702.27 and earlier, allows remote attackers to inject arbitrary headers into e-mail messages via CRLF sequences in Subject lines.
• SA24652: B21Soft BASP21 SMTP Component CRLF Injection
• VUPEN/ADV-2007-1113: B21Soft BASP21 Bsmtp.dll Library Arbitrary Email Header Injection Vulnerability

Platforms Affected:

• B21Soft BASP21 2003.0211
• B21Soft BASP21 Pro 1.0.702.27

Reported:

Mar 26, 2007

The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall the author/distributor (IBM Internet Security Systems X-Force) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

For corrections or additions please email xforce@iss.net

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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

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