Mailback mailback.pl "subject" parameter mail relay
| mailback-mail-relay (24540) |  Low Risk |
Description:
Mailback could be used as an open mail relay. A remote attacker could insert newline and carriage return characters in the "Subject" field to inject arbitrary "CC" and "BCC" mail headers, allowing the attacker to send anonymous email to arbitrary addresses using the server running the vulnerable script.
*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: | 3 |
| Exploitability: | High |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Bypass Security
Remedy:
Upgrade to the latest version of Mailback (1.4 or later), available from VC.THAUVIN.NET. See References.
References:
- BugTraq Mailing List, Sun Feb 05 2006 - 04:28:49 CST: mailback script exploit.
- VC.THAUVIN.NET: Index of /cgi/mailback.
- VC.THAUVIN.NET: Log of /cgi/mailback/mailback.pl.
- CVE-2006-0631: CRLF injection vulnerability in mailback.pl in Erik C. Thauvin mailback allows remote attackers to use mailback as a spam proxy by modifying mail headers, including recipient e-mail addresses, via newline characters in the Subject field.
- OSVDB ID: 22955: Erik Thauvin mailback.pl Subject Line Arbitrary Mail Relay
- SA18748: Mailback Mail Header Injection Vulnerability
- VUPEN/ADV-2006-0459: Mailback subject Variable Handling Mail Header Injection Vulnerability
Platforms Affected:
- VC.THAUVIN.NET Mailback 1.3 and prior
Reported:
Feb 06, 2006
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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.