Netscape Communicator vulnerabilities

The Netscape Mail Notification (nsnotify) utility in Netscape Communicator uses IMAP without SSL, even if the user has set a preference for SSL connections. This allows a remote attacker to sniff usernames and passwords in plaintext.

There is a buffer overflow in Netscape Communicator before version 4.7 caused by a dynamic font whose length field is less than the size of the font.

Netscape Communicator 4.7 and earlier allows remote attackers to cause a denial of service, and possibly execute arbitrary commands, via a long certificate key.

Netscape Communicator versions 4.04 through 4.7 (and possibly other versions) on various UNIX operating systems converts the 0x8b character to a '<' sign and the 0x9b character to a '>' sign, which could allow remote attackers to perform cross-site scripting (CSS) attacks in CGI programs that do not filter these characters.

Buffer overflow in Netscape Communicator occurs via EMBED tags in the pluginspage option.

Netscape Communicator 4.x with JavaScript enabled does not warn a user of cookie settings, even if they have selected the option 'Only accept cookies originating from the same server as the page being viewed'.

A vulnerability in Netscape Communicator allows a remote attacker to use the 'about' protocol to gain access to browser information when JavaScript is embedded within the TITLE tag.