Sendmail flaw poses critical hacker risk
Security researchers have unearthed a flaw in Sendmail, the popular email server package that's widely used by ISPs. A security bug involving improper handling of asynchronous signal data by Sendmail when receiving and processing mail might be used to corrupt stack memory. By sending specially malformed data at controlled time intervals hackers might be able to take advantage of the flaw to compromise vulnerable systems.
At The Register.
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