CVE-2002-1121
HighSummary
SMTP content filter engines, such as GFI MailSecurity, InterScan VirusWall, and MIMEDefang, do not detect fragmented emails, allowing remote attackers to bypass content filtering, including virus checking.
Risk Assessment
Organizations may be exposed to attacks using fragmented emails, potentially leading to virus infections and other security threats.
Recommendation
It is recommended to update the content filter engines in use to the latest versions that improve detection of fragmented emails.
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Original NVD description (English source)
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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

