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Mozilla Foundation Security Advisory 2005-28

Title: Unsafe /tmp/plugtmp directory exploitable to erase user's files
Severity: Critical (local)
Risk: High (on shared machine, low otherwise)
Reporter: Tavis Ormandy
Products: Firefox, Mozilla Suite

Fixed in: Firefox 1.0.1
  Mozilla Suite 1.7.6

Description

A predictable name is used for the plugin temporary directory. A malicious local user could symlink this to the victim's home directory and wait for the victim to run Firefox. When Firefox shuts down the victim's directory would be erased.

Workaround

None.

References