Cisco fixes serious DoS flaws in its email security appliances


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Zeljka Zorz, Managing Editor January 10, 2019

Cisco has plugged a heap of security holes in many of its products, including two vulnerabilities (one critical) that open its email security appliances to denial of service attacks.


About the vulnerabilities


Both vulnerabilities affect the Cisco AsyncOS Software for Cisco Email Security Appliances, and can be exploited remotely by unauthenticated attackers.

CVE-2018-15453 can be exploited by sending a malicious S/MIME-signed email through a targeted device.

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