A vulnerability in the Sender Policy Framework (SPF) functionality of Cisco AsyncOS Software for Cisco Email Security Appliances (ESA) could allow an unauthenticated, remote attacker to bypass configured user filters on the device. The vulnerability is due to incomplete input and validation checking mechanisms for certain SPF messages that are sent to an affected device. An attacker could exploit this vulnerability by sending a customized SPF packet to an affected device. A successful exploit could allow the attacker to bypass the header filters that are configured for the affected device, which could allow malicious content to pass through the device.
History

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cve-icon MITRE

Status: PUBLISHED

Assigner: cisco

Published: 2019-08-08T07:30:33.594133Z

Updated: 2024-09-17T00:05:45.093Z

Reserved: 2018-12-06T00:00:00

Link: CVE-2019-1955

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2019-08-08T08:15:12.537

Modified: 2023-03-29T16:25:09.990

Link: CVE-2019-1955

cve-icon Redhat

No data.