CVE-2019-15971

Medium

Description

A vulnerability in the MP3 detection engine 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 validation of certain MP3 file types. An attacker could exploit this vulnerability by sending a crafted MP3 file through the targeted device. A successful exploit could allow the attacker to bypass configured content filters that would normally drop the email.

SeverityMedium

CVSS4.3

Exploit probability—

Product

Cisco Email Security Appliance Firmware

PublishedNov 26, 2019

First seenNov 26, 2019

Weakness typeCWE-20Improper input validation

How to fix

Update

cisco email_security_appliance_firmware13.0 or later

Vendor advisories

tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20191120-esa-mp3-bypass

Affected products

Product	Affected versions	Fixed in
cisco email_security_appliance_firmware	v < 13.0	13.0

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