The Network Security. Org

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.

Sendmail packages up to and including versions 8.13.5 as well as Sendmail 8.12.11 and earlier versions are vulnerable to exploitation. Users of the commercial versions of Sendmail are also potentially at risk and may need to apply patches Sendmail flaw poses critical hacker risk | The Register

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