PT-2019-3796 · Cisco · Cisco Email Security Appliance

Published 2019-10-02 · Updated 2019-10-10 · CVE-2019-12706

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

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

Description A vulnerability in the Sender Policy Framework (SPF) functionality could allow an unauthenticated, remote attacker to bypass the configured user filters on an affected device. The issue exists due to insufficient validation of certain incoming SPF messages. An attacker could exploit this by sending a custom SPF packet to an affected device, potentially allowing malicious content to pass through 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:2019-04123

CVE-2019-12706

Affected Products

Cisco Email Security Appliance

References · 4

• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20191002-esa-bypass · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-12706 · Security Note
• https://bdu.fstec.ru/vul/2019-04123 · Security Note
• https://osv.dev/vulnerability/CVE-2019-12706 · Vendor Advisory