CVE-2016-6356: Input Validation
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.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2016-6356?
CVE-2016-6356 is rated as critical due to its potential for causing a denial of service condition.
How do I fix CVE-2016-6356?
To fix CVE-2016-6356, upgrade to a fixed version of the Cisco Email Security Appliance Firmware as recommended in the advisories.
Which Cisco Email Security Appliance versions are affected by CVE-2016-6356?
CVE-2016-6356 affects multiple versions, including 3.3.1-09 and various versions from 7.1.0 to 9.7.1-066.
What kind of attack does CVE-2016-6356 allow?
CVE-2016-6356 allows an unauthenticated remote attacker to disrupt email scanning and forwarding services.
Is there a workaround for CVE-2016-6356?
No specific workarounds are provided for CVE-2016-6356, hence upgrading firmware is recommended.