CVE-2019-1955

Cisco Email Security Appliance Header Injection Vulnerability

State: Published
Severity: 5.3 Medium
Published: Aug 8, 2019
Updated: Nov 19, 2024
Reserved: Dec 6, 2018

Description

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.

Scores

CVSS	Score	Vector	Source
3.0	5.3 Medium	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N	cisco

Weaknesses

CWE-20

Affected Products

Product	Versions
Cisco Email Security Appliance (ESA)Cisco	before n/aAffected

References

20190807 Cisco Email Security Appliance Header Injection Vulnerabilityvendor-advisory

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