A vulnerability in the email scanning algorithm of Cisco AsyncOS software for Cisco Email Security Appliance (ESA) could allow an unauthenticated, remote attacker to perform a denial of service (DoS) attack against an affected device. This vulnerability is due to insufficient input validation of incoming emails. An attacker could exploit this vulnerability by sending a crafted email through Cisco ESA. A successful exploit could allow the attacker to exhaust all the available CPU resources on an affected device for an extended period of time, preventing other emails from being processed and resulting in a DoS condition.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HCisco Asyncos
OSCisco13.5.3-01013.7.0-093< 13.0.4Cisco M170
HWCiscoall versionsCisco M190
HWCiscoall versionsCisco M380
HWCiscoall versionsCisco M390
HWCiscoall versionsCisco M390x
HWCiscoall versionsCisco M680
HWCiscoall versionsCisco M690
HWCiscoall versionsCisco M690x
HWCiscoall versionsCisco S195
HWCiscoall versionsCisco S395
HWCiscoall versionsCisco S695
HWCiscoall versions
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