CVE-2015-6291: Input Validation
Cisco AsyncOS before 8.5.7-043, 9.x before 9.1.1-023, and 9.5.x and 9.6.x before 9.6.0-046 on Email Security Appliance (ESA) devices mishandles malformed fields during body-contains, attachment-contains, every-attachment-contains, attachment-binary-contains, dictionary-match, and attachment-dictionary-match filtering, which allows remote attackers to cause a denial of service (memory consumption) via a crafted attachment in an e-mail message, aka Bug ID CSCuv47151.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2015-6291?
CVE-2015-6291 has a High severity rating due to its potential impact on Cisco Email Security Appliance devices.
How do I fix CVE-2015-6291?
To fix CVE-2015-6291, upgrade your Cisco Email Security Appliance to a version that includes the patch, specifically 8.5.7-043, 9.1.1-023, or later.
What versions are affected by CVE-2015-6291?
CVE-2015-6291 affects Cisco Email Security Appliance versions prior to 8.5.7-043, 9.1.1-023, and 9.6.0-046.
What happens if I don't address CVE-2015-6291?
Failing to address CVE-2015-6291 could lead to potential unauthorized access or exploitation of the Email Security Appliance.
How can I verify if my Cisco Email Security Appliance is vulnerable to CVE-2015-6291?
You can verify vulnerability to CVE-2015-6291 by checking the firmware version of your Cisco Email Security Appliance against the affected versions.