Red Hat Security Advisory 2012-1379-01 - OpenStack Swift is a highly available, distributed, eventually consistent object/blob store. It was found that OpenStack Swift used the Python pickle module in an insecure way to serialize and deserialize data from memcached. As memcached does not have authentication, an attacker on the local network, or possibly an unprivileged user in a virtual machine hosted on OpenStack, could use this flaw to inject specially-crafted data that would lead to arbitrary code execution.
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