Outlook and IE for Mac Reported December 22, 1999 by Microsoft
Outlook 5.0 for Macintosh
Internet Explorer 4.5 for Macintosh
According to Microsoft"s bulletin on the
matter, "By design, when an HTML mail is received, the mail content is downloaded
onto the user"s machine and processed. However, attachments to the mail should not be
downloaded unless the user requests it. A flaw in Outlook Express 5 for Macintosh causes
it to download all content, including attachments. The vulnerability does not provide a
way for a malicious user to launch the downloaded attachments."
"The second issue involves several digital certificates that are included in Internet
Explorer 4.5 for Macintosh. These certificates are due to expire on December 31, 1999. The
patch provides updated certificates, and also adds support for X509 V3 certificates. There
is no security vulnerability associated with this issue; Microsoft is simply providing the
replacement certificates and X.509 V3 support as a community service."
"It is important to note that both the security vulnerability and the certificate
expiration issue affect only Outlook Express and Internet Explorer on the Macintosh; the
Windows versions of these products are not affected."