Ubuntu Security Notice 653-1 - Havoc Pennington discovered that the D-Bus daemon did not correctly validate certain security policies. If a local user sent a specially crafted D-Bus request, they could bypass security policies that had a "send_interface" defined. It was discovered that the D-Bus library did not correctly validate certain corrupted signatures. If a local user sent a specially crafted D-Bus request, they could crash applications linked against the D-Bus library, leading to a denial of service.
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