NoticeWare IMAP Email Server 4.6.2 DoS vulnerability

2008-08-14 / 2008-08-15
Credit: J Antunes
Risk: Medium
Local: No
Remote: Yes
CWE: CWE-20


CVSS Base Score: 5/10
Impact Subscore: 2.9/10
Exploitability Subscore: 10/10
Exploit range: Remote
Attack complexity: Low
Authentication: No required
Confidentiality impact: None
Integrity impact: None
Availability impact: Partial

---------------------------------------- Synopsis ---------------------------------------- NoticeWare Email Server NG 4.6.2 is vulnerable to denial-of-service (DoS) attacks. The IMAP server crashes after receiving several large LOGIN messages. Product: NoticeWare Email Server NG Version: 4.6.3 and probably the older versions Vendor: NoticeWare Corporation (www.noticeware.com) Type: Denial-of-service Risk: service disruption Remote: Yes Discovered by: Jo?o Antunes (AJECT -- Attack Injection Tool) on 04/Jun/ 2008 Exploit: Not Available Solution: Not Available Status: Developers were contacted and corrected the software in version 5.1 ---------------------------------------- Vulnerability Description ---------------------------------------- The vulnerability can be triggered by sending over 40 LOGIN messages to the imap server: A001 LOGIN Ax5000 AAAAA Depending on the number of repeated messages (probably related to the server resources) this will crash the server. Successful exploitation results in a remote denial of service.

References:

http://www.securityfocus.com/bid/30605
http://www.securityfocus.com/archive/1/archive/1/495259/100/0/threaded


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