PT-2019-4320 · Cisco · Cisco Email Security Appliance

Published 2019-11-20 · Updated 2019-12-11 · CVE-2019-15988

Positive Technologies (AI Summary)

CVSS v3.1

5.8

Medium

Base vector

AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N

Name of the Vulnerable Software and Affected Versions Cisco Email Security Appliance (ESA) (affected versions not specified)

Description The issue is related to insufficient input validation in the anti-spam protection mechanisms of Cisco Email Security Appliance (ESA), allowing a remote attacker to bypass content filters and potentially compromise the integrity of protected information. Specifically, the vulnerability is due to insufficient input validation of URLs, which could be exploited by crafting a URL in a particular way, enabling an attacker to bypass URL reputation filters configured on the device.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

RCE

Weakness Enumeration

CWE-20

Related Identifiers

BDU:2020-00035

CVE-2019-15988

Affected Products

Cisco Email Security Appliance

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2019-15988 · Security Note
• https://osv.dev/vulnerability/CVE-2019-15988 · Vendor Advisory
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20191120-esa-url-bypass · Vendor Advisory
• https://bdu.fstec.ru/vul/2020-00035 · Security Note