medium
5.3
CWE
399
Advisory Published
Updated

CVE-2016-1440

First published: Sat Jul 02 2016(Updated: )

The proxy process on Cisco Web Security Appliance (WSA) devices through 9.1.0-070 allows remote attackers to cause a denial of service (CPU consumption) by establishing an FTP session and then improperly terminating the control connection after a file transfer, aka Bug ID CSCuy43468.

Credit: ykramarz@cisco.com

Affected SoftwareAffected VersionHow to fix
Cisco Web Security Appliance=5.6.0-623
Cisco Web Security Appliance=6.0.0-000
Cisco Web Security Appliance=7.1.0
Cisco Web Security Appliance=7.1.1
Cisco Web Security Appliance=7.1.2
Cisco Web Security Appliance=7.1.3
Cisco Web Security Appliance=7.1.4
Cisco Web Security Appliance=7.5.0-000
Cisco Web Security Appliance=7.5.0-825
Cisco Web Security Appliance=7.5.1-000
Cisco Web Security Appliance=7.5.2-000
Cisco Web Security Appliance=7.5.2-hp2-303
Cisco Web Security Appliance=7.7.0-000
Cisco Web Security Appliance=7.7.0-608
Cisco Web Security Appliance=7.7.1-000
Cisco Web Security Appliance=7.7.5-835
Cisco Web Security Appliance=8.0.0-000
Cisco Web Security Appliance=8.0.5
Cisco Web Security Appliance=8.0.5_hp1
Cisco Web Security Appliance=8.0.6
Cisco Web Security Appliance=8.0.6-078
Cisco Web Security Appliance=8.0.6-119
Cisco Web Security Appliance=8.0.7
Cisco Web Security Appliance=8.0.7-142
Cisco Web Security Appliance=8.0.8-mr-113
Cisco Web Security Appliance=8.5.0-497
Cisco Web Security Appliance=8.5.0.000
Cisco Web Security Appliance=8.5.1-021
Cisco Web Security Appliance=8.5.2-024
Cisco Web Security Appliance=8.5.2-027
Cisco Web Security Appliance=8.5.3-055
Cisco Web Security Appliance=8.8.0-000
Cisco Web Security Appliance=8.8.0-085
Cisco Web Security Appliance=9.0.0-193
Cisco Web Security Appliance=9.0_base
Cisco Web Security Appliance=9.1.0-000
Cisco Web Security Appliance=9.1.0-070

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2016-1440?

    CVE-2016-1440 has a high severity due to the potential for denial of service caused by high CPU consumption.

  • How do I fix CVE-2016-1440?

    To fix CVE-2016-1440, upgrade your Cisco Web Security Appliance to a version that is not affected by the vulnerability.

  • What types of attacks exploit CVE-2016-1440?

    CVE-2016-1440 can be exploited by remote attackers who establish an FTP session and improperly terminate the control connection.

  • Which Cisco Web Security Appliance versions are vulnerable to CVE-2016-1440?

    Versions of Cisco Web Security Appliance up to and including 9.1.0-070 are vulnerable to CVE-2016-1440.

  • What impact can CVE-2016-1440 have on a network?

    CVE-2016-1440 can potentially cause significant strain on CPU resources, leading to degraded performance or unavailability of the Cisco Web Security Appliance.

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