CVE-2017-3800: Input Validation

Published Jan 26, 2017

Updated

A vulnerability in the content scanning engine of Cisco AsyncOS Software for Cisco Email Security Appliances (ESA) could allow an unauthenticated, remote attacker to bypass configured message or content filters on the device. 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: CSCuz16076. Known Affected Releases: 9.7.1-066 9.7.1-HP2-207 9.8.5-085. Known Fixed Releases: 10.0.1-083 10.0.1-087.

Affected Software

3 affected components

Cisco Email Security Appliance=9.7.1-066

Cisco Email Security Appliance=9.7.1-hp2-207

Cisco Email Security Appliance=9.8.5-085

Remediation

Recommended actions to resolve this vulnerability, in priority order.

Upgrade
Upgrade Cisco AsyncOS Software for Cisco Email Security Appliances (ESA) to a version that resolves this vulnerability.
Fixed in 10.0.1-083
Upgrade
Upgrade Cisco AsyncOS Software for Cisco Email Security Appliances (ESA) to a version that resolves this vulnerability.
Fixed in 10.0.1-087
Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Patch CSCuz16076

Event History

Jan 26, 2017

CVE Published

via MITRE·07:45 AM

Data Sourced

via MITRE·07:45 AM

DescriptionWeakness

Data Sourced

via NVD·07:59 AM

DescriptionSeverityWeaknessAffected Software

Frequently Asked Questions

What is the severity of CVE-2017-3800?

CVE-2017-3800 has a medium severity rating that can allow unauthorized access to bypass configured filters.

How do I fix CVE-2017-3800?

To fix CVE-2017-3800, update the Cisco Email Security Appliance to a patched version as recommended by Cisco.

What are the affected versions in CVE-2017-3800?

CVE-2017-3800 affects Cisco Email Security Appliance firmware versions prior to the fixes released in 9.7.1-067 and 9.8.5-086.

Can CVE-2017-3800 be exploited remotely?

Yes, CVE-2017-3800 can be exploited remotely by an unauthenticated attacker.

What impact does CVE-2017-3800 have on email security?

CVE-2017-3800 allows attackers to bypass message and content filters, which undermines email security protocols.