National Cyber-Alert System
Vulnerability Summary for CVE-2002-1121
Original release date:09/24/2002
Last revised:09/11/2008
Source:
US-CERT/NIST
Overview
SMTP content filter engines, including (1) GFI MailSecurity for Exchange/SMTP before 7.2, (2) InterScan VirusWall before 3.52 build 1494, (3) the default configuration of MIMEDefang before 2.21, and possibly other products, do not detect fragmented emails as defined in RFC2046 ("Message Fragmentation and Reassembly") and supported in such products as Outlook Express, which allows remote attackers to bypass content filtering, including virus checking, via fragmented emails of the message/partial content type.
Impact
CVSS Severity (version 2.0):
Impact Subscore:
6.4
Exploitability Subscore:
10.0
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: Low
Authentication: Not required to exploit
Impact Type:Provides unauthorized access, Allows partial confidentiality, integrity, and availability violation; Allows unauthorized disclosure of information; Allows disruption of service
References to Advisories, Solutions, and Tools
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US-CERT Vulnerability Note: VU#836088
Name: VU#836088
External Source: BUGTRAQ
Name: 20020912 MIMEDefang update (was Re: Bypassing SMTP Content Protection )
Type: Advisory; Patch Information
External Source: BID
Name: 5696
External Source: MISC
Name: http://www.securiteam.com/securitynews/5YP0A0K8CM.html
External Source: XF
Name: smtp-content-filtering-bypass(10088)
Type: Advisory
External Source: VULNWATCH
Name: 20020912 Bypassing SMTP Content Protection with a Flick of a Button
Type: Advisory
External Source: BUGTRAQ
Name: 20020912 FW: Bypassing SMTP Content Protection with a Flick of a Button
External Source: BUGTRAQ
Name: 20020912 Bypassing SMTP Content Protection with a Flick of a Button
External Source: BUGTRAQ
Name: 20020912 Roaring Penguin fixes for "Bypassing SMTP Content Protection with a Flick of a Button"
