CVE-2019-1933: cisco cisco email security appliance (esa) Improper Input Validation

Vulnerability summary

CVE-2019-1933 is a high (CVSS 7.4) Improper Input Validation vulnerability in cisco cisco email security appliance (esa). EPSS estimates a 1.24% chance of exploitation in the next 30 days, higher than 68.8% of scored vulnerabilities.

Timeline

1. 06-07-2019
   PublishedVulnerability first disclosed.
2. 19-11-2024
   Last modifiedVulnerability information updated.

Description

A vulnerability in the email message scanning of Cisco AsyncOS Software for Cisco Email Security Appliance (ESA) could allow an unauthenticated, remote attacker to bypass configured filters on the device. The vulnerability is due to improper input validation of certain email fields. An attacker could exploit this vulnerability by sending a crafted email message to a recipient protected by the ESA. A successful exploit could allow the attacker to bypass configured message filters and inject arbitrary scripting code inside the email body. The malicious code is not executed by default unless the recipient's email client is configured to execute scripts contained in emails.

• CWE-20Improper Input ValidationThe product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.