PT-2015-6476 · Cisco · Cisco Asyncos+1

Published 2015-07-10 · Updated 2018-10-30 · CVE-2015-4236

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 AsyncOS on Email Security Appliance (ESA) devices versions 8.5.6-073 through 8.5.6-074 Cisco AsyncOS on Email Security Appliance (ESA) devices version 9.0.0-461

Description The issue allows remote attackers to cause a denial of service, resulting in clustering and SSH outage, via a packet flood when clustering is enabled.

Recommendations For versions 8.5.6-073 and 8.5.6-074, consider disabling clustering as a temporary workaround until a patch is available. For version 9.0.0-461, consider restricting SSH access to minimize the risk of exploitation. As a general mitigation measure, implement rate limiting on incoming packets to prevent flooding.

Fix

Weakness Enumeration

CWE-399

Related Identifiers

CVE-2015-4236

Affected Products

Cisco Asyncos

Email Security Appliance

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2015-4236 · Security Note
• http://tools.cisco.com/security/center/viewAlert.x?alertId=39785 · Vendor Advisory
• http://securitytracker.com/id/1032855 · Note
• http://securityfocus.com/bid/75703 · Note