netscape -- unexpected javascript execution

2001-04-23T00:00:00
ID DSA-051
Type debian
Reporter Debian
Modified 2001-04-23T00:00:00

Description

Florian Wesch has discovered a problem (reported to bugtraq) with the way how Netscape handles comments in GIF files. The Netscape browser does not escape the GIF file comment in the image information page. This allows javascript execution in the "about:" protocol and can for example be used to upload the History (about:global) to a webserver, thus leaking private information. This problem has been fixed upstream in Netscape 4.77.

Since we haven't received source code for these packages, they are not part of the Debian GNU/Linux distribution, but are packaged up as `.deb' files for a convenient installation.

We recommend that you upgrade your Netscape packages immediately and remove older versions.