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MIME: denial of service by encapsulation
Synthesis of the vulnerability
An attacker can create an email containing deep MIME encapsulations in order to create a denial of service in several applications.
Impacted software: OE, Microsoft Windows Mail, Norton Internet Security, Opera, SMTP protocol.
Severity of this computer vulnerability: 2/4.
Consequences of an attack: denial of service on service.
Attacker's origin: document.
Number of vulnerabilities in this bulletin: 5.
Creation date: 09/12/2008.
Références of this announce: BID-32702, CVE-2008-5424, CVE-2008-5425, CVE-2008-5426, CVE-2008-5427, CVE-2008-5428, VIGILANCE-VUL-8296.
Description of the vulnerability
An email can contain several parts separated by MIME headers. Each part can also contain data encapsulated with MIME headers.
Some software do not limit the number of encapsulation. An attacker can therefore send an email containing several thousand parts in order to create a denial of service.
Here is a list of impacted software:
Microsoft Outlook Express 6
Opera Version: 9.51
Norton Internet Security Version 15
Kaspersky Internet Security 2009
This vulnerability type is old, and has for example impacted Sendmail (VIGILANCE-VUL-5924) and ClamAV (VIGILANCE-VUL-6398).
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