PT-2015-6496 · Cisco · Cisco Email Security Appliance

Published 2015-07-16 · Updated 2018-10-30 · CVE-2015-4278

Positive Technologies (AI Summary)

CVSS v2.0

4.3

Medium

Base vector

AV:N/AC:M/Au:N/C:N/I:N/A:P

Name of the Vulnerable Software and Affected Versions Cisco Email Security Appliance (ESA) devices version 8.5.6-106 Cisco Email Security Appliance (ESA) devices version 9.5.0-201

Description The issue allows remote attackers to cause a denial of service, resulting in a per-domain email reception outage. This can be achieved by placing malformed DMARC policy data in DNS TXT records for a domain.

Recommendations For version 8.5.6-106, update the software to a version that fixes the issue. For version 9.5.0-201, update the software to a version that fixes the issue. As a temporary workaround, consider restricting access to DNS TXT records to minimize the risk of exploitation.

Fix

RCE

Weakness Enumeration

CWE-20

Related Identifiers

CVE-2015-4278

Affected Products

Cisco Email Security Appliance

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2015-4278 · Security Note
• http://tools.cisco.com/security/center/viewAlert.x?alertId=39940 · Vendor Advisory
• http://securitytracker.com/id/1032961 · Note