CVE-2021-1223

Multiple Cisco products are affected by a vulnerability in the Snort
detection engine that could allow an unauthenticated, remote attacker to
bypass a configured file policy for HTTP. The vulnerability is due to
incorrect handling of an HTTP range header. An attacker could exploit this
vulnerability by sending crafted HTTP packets through an affected device. A
successful exploit could allow the attacker to bypass configured file
policy for HTTP packets and deliver a malicious payload.

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