Symantec personal firewalls contain a flaw that may allow a remote attacker to gain remote KERNEL access. The flaw is due to an overflow within a core driver component that handles the processing of DNS (Domain Name Service) requests and responses. By sending a specially crafted DNS Resource Record with an overly long canonical name, a stack-based buffer can be overflowed to execute arbitrary code.
Currently, there are no known workarounds or upgrades to correct this issue. However, Symantec has released a patch to address this vulnerability. Customers can obtain the update via the LiveUpdate utility:
1. Open any installed Symantec product
2. Click on LiveUpdate in the toolbar
3. Run LiveUpdate until Symantec LiveUpdate indicated that all installed Symantec products are up-to-date
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This section lists the latest news and blogs found via the daylife API (and for older items, the technorati API), which mention or otherwise discuss this vulnerability.