medium
5.9
CWE
119
Advisory Published
Updated

CVE-2016-6416: Buffer Overflow

First published: Wed Oct 05 2016(Updated: )

The FTP service in Cisco AsyncOS on Email Security Appliance (ESA) devices 9.6.0-000 through 9.9.6-026, Web Security Appliance (WSA) devices 9.0.0-162 through 9.5.0-444, and Content Security Management Appliance (SMA) devices allows remote attackers to cause a denial of service via a flood of FTP traffic, aka Bug IDs CSCuz82907, CSCuz84330, and CSCuz86065.

Credit: ykramarz@cisco.com

Affected SoftwareAffected VersionHow to fix
Cisco Content Security Management=9.1.0
Cisco Content Security Management=9.1.0-004
Cisco Content Security Management=9.1.0-031
Cisco Content Security Management=9.1.0-033
Cisco Content Security Management=9.1.0-103
Cisco Content Security Management=9.5.0
Cisco Content Security Management=9.6.0
Cisco Email Security Appliance Firmware=9.6.0-000
Cisco Email Security Appliance Firmware=9.6.0-042
Cisco Email Security Appliance Firmware=9.6.0-051
Cisco Email Security Appliance Firmware=9.7.1-066
Cisco Email Security Appliance Firmware=9.9.6-026
Cisco Email Security Appliance Firmware=9.9_base
Cisco Web Security Appliance=9.0.0-162
Cisco Web Security Appliance=9.1.0-000
Cisco Web Security Appliance=9.1.0-070
Cisco Web Security Appliance=9.1_base
Cisco Web Security Appliance=9.5.0-235
Cisco Web Security Appliance=9.5.0-284
Cisco Web Security Appliance=9.5.0-444
Cisco Web Security Appliance=9.5_base

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2016-6416?

    CVE-2016-6416 has been rated as High severity due to its potential to cause a denial of service.

  • How do I fix CVE-2016-6416?

    To fix CVE-2016-6416, upgrade your Cisco devices to the patched versions specified by Cisco.

  • What devices are affected by CVE-2016-6416?

    CVE-2016-6416 affects Cisco AsyncOS on Email Security Appliance, Web Security Appliance, and Content Security Management Appliance versions 9.6.0-000 through 9.9.6-026.

  • What type of attack does CVE-2016-6416 facilitate?

    CVE-2016-6416 enables remote attackers to launch a denial of service attack through an FTP flood.

  • Is there a workaround for CVE-2016-6416?

    Cisco recommends upgrading to an unaffected version as the primary solution for CVE-2016-6416, as there is no effective workaround.

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