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Cisco Email Security Appliance Content Filter Bypass Vulnerability

cisco-sa-20190417-esa-filter-bypass · Medium · Published · Updated

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 content filters on the device. The vulnerability is due to improper input validation of the email body. An attacker could exploit this vulnerability by inserting specific character strings in the message. A successful exploit could allow the attacker to bypass configured content filters that would normally drop the email. There are no workarounds that address this vulnerability. This advisory is available at the following link: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190417-esa-filter-bypass

Cisco advisory ·CSAF JSON

Workarounds

There are no workarounds that address this vulnerability.

CVEsCVE-2019-1831
Cisco Bug IDsCSCvo01349, CSCvo78686
CVSS ScoreBase 5.8
Base 5.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N/E:X/RL:X/RC:X
Product Names From Source
Cisco Email Security Appliance (ESA), Cisco Secure Email

Related Products

Product CVE Evidence
Cisco Nexus Dashboard CVE-2019-1831 Cisco OpenVuln
Cisco Secure Email CVE-2019-1831 Cisco OpenVuln
Cisco Email Security Appliance (ESA) CVE-2019-1831 Cisco OpenVuln