First published: Fri Nov 06 2015(Updated: )
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.
Credit: ykramarz@cisco.com
Affected Software | Affected Version | How to fix |
---|---|---|
Cisco Email Security Appliance Firmware | =7.7.0-000 | |
Cisco Email Security Appliance Firmware | =7.7.1-000 | |
Cisco Email Security Appliance Firmware | =8.0_base | |
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 | =8.5_base | |
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 | =9.1.0-032 | |
Cisco Email Security Appliance Firmware | =9.6.0-042 |
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CVE-2015-6291 has a High severity rating due to its potential impact on Cisco Email Security Appliance devices.
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.
CVE-2015-6291 affects Cisco Email Security Appliance versions prior to 8.5.7-043, 9.1.1-023, and 9.6.0-046.
Failing to address CVE-2015-6291 could lead to potential unauthorized access or exploitation of the Email Security Appliance.
You can verify vulnerability to CVE-2015-6291 by checking the firmware version of your Cisco Email Security Appliance against the affected versions.