First published: Fri Oct 28 2016(Updated: )
A vulnerability in the email message filtering feature of Cisco AsyncOS Software for Cisco Email Security Appliances could allow an unauthenticated, remote attacker to cause an affected device to stop scanning and forwarding email messages due to a denial of service (DoS) condition. Affected Products: This vulnerability affects all releases prior to the first fixed release of Cisco AsyncOS Software for Cisco Email Security Appliances, both virtual and hardware appliances, if the software is configured to apply a message filter or content filter to incoming email attachments. The vulnerability is not limited to any specific rules or actions for a message filter or content filter. More Information: CSCuz63143. Known Affected Releases: 8.5.7-042 9.7.0-125. Known Fixed Releases: 10.0.0-125 9.1.1-038 9.7.2-047.
Credit: ykramarz@cisco.com
Affected Software | Affected Version | How to fix |
---|---|---|
Cisco Email Security Appliance Firmware | =3.3.1-09 | |
Cisco Email Security Appliance Firmware | =7.1.0 | |
Cisco Email Security Appliance Firmware | =7.1.1 | |
Cisco Email Security Appliance Firmware | =7.1.2 | |
Cisco Email Security Appliance Firmware | =7.1.3 | |
Cisco Email Security Appliance Firmware | =7.1.4 | |
Cisco Email Security Appliance Firmware | =7.1.5 | |
Cisco Email Security Appliance Firmware | =7.3.0 | |
Cisco Email Security Appliance Firmware | =7.3.1 | |
Cisco Email Security Appliance Firmware | =7.3.2 | |
Cisco Email Security Appliance Firmware | =7.5.0 | |
Cisco Email Security Appliance Firmware | =7.5.1 | |
Cisco Email Security Appliance Firmware | =7.5.2 | |
Cisco Email Security Appliance Firmware | =7.5.2-201 | |
Cisco Email Security Appliance Firmware | =7.6.0 | |
Cisco Email Security Appliance Firmware | =7.6.1-000 | |
Cisco Email Security Appliance Firmware | =7.6.1-gpl-022 | |
Cisco Email Security Appliance Firmware | =7.6.2 | |
Cisco Email Security Appliance Firmware | =7.6.3-000 | |
Cisco Email Security Appliance Firmware | =7.6.3-025 | |
Cisco Email Security Appliance Firmware | =7.7.0-000 | |
Cisco Email Security Appliance Firmware | =7.7.1-000 | |
Cisco Email Security Appliance Firmware | =7.8.0 | |
Cisco Email Security Appliance Firmware | =7.8.0-311 | |
Cisco Email Security Appliance Firmware | =8.0.1-023 | |
Cisco Email Security Appliance Firmware | =8.0_base | |
Cisco Email Security Appliance Firmware | =8.5.0-000 | |
Cisco Email Security Appliance Firmware | =8.5.0-er1-198 | |
Cisco Email Security Appliance Firmware | =8.5.6-052 | |
Cisco Email Security Appliance Firmware | =8.5.6-073 | |
Cisco Email Security Appliance Firmware | =8.5.6-074 | |
Cisco Email Security Appliance Firmware | =8.5.6-106 | |
Cisco Email Security Appliance Firmware | =8.5.6-113 | |
Cisco Email Security Appliance Firmware | =8.5.7-042 | |
Cisco Email Security Appliance Firmware | =8.6.0 | |
Cisco Email Security Appliance Firmware | =8.6.0-011 | |
Cisco Email Security Appliance Firmware | =8.9.0 | |
Cisco Email Security Appliance Firmware | =8.9.1-000 | |
Cisco Email Security Appliance Firmware | =8.9.2-032 | |
Cisco Email Security Appliance Firmware | =9.0.0 | |
Cisco Email Security Appliance Firmware | =9.0.0-212 | |
Cisco Email Security Appliance Firmware | =9.0.0-461 | |
Cisco Email Security Appliance Firmware | =9.0.5-000 | |
Cisco Email Security Appliance Firmware | =9.1.0 | |
Cisco Email Security Appliance Firmware | =9.1.0-011 | |
Cisco Email Security Appliance Firmware | =9.1.0-032 | |
Cisco Email Security Appliance Firmware | =9.1.0-101 | |
Cisco Email Security Appliance Firmware | =9.4.0 | |
Cisco Email Security Appliance Firmware | =9.4.4-000 | |
Cisco Email Security Appliance Firmware | =9.5.0-000 | |
Cisco Email Security Appliance Firmware | =9.5.0-201 | |
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 | =9.7.0-125 | |
Cisco Email Security Appliance Firmware | =9.7.1-066 |
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CVE-2016-6356 is rated as critical due to its potential for causing a denial of service condition.
To fix CVE-2016-6356, upgrade to a fixed version of the Cisco Email Security Appliance Firmware as recommended in the advisories.
CVE-2016-6356 affects multiple versions, including 3.3.1-09 and various versions from 7.1.0 to 9.7.1-066.
CVE-2016-6356 allows an unauthenticated remote attacker to disrupt email scanning and forwarding services.
No specific workarounds are provided for CVE-2016-6356, hence upgrading firmware is recommended.