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CVE-2017-3827

UnknownEPSS 1.93%

Last modified

CVE-2017-3827 is a vulnerability of currently unknown severity. A vulnerability in the Multipurpose Internet Mail Extensions (MIME) scanner of Cisco AsyncOS Software for Cisco Email Security Appliances (ESA) and Web Security Appliances (WSA) could allow an unauthenticated, remote attacker to bypass configured user filters on the device. Affected Products: This vulnerability affects all releases prior to the first fixed release of Cisco AsyncOS Software for Cisco ESA and Cisco WSA, both virtual and hardware appliances, that are configured with message or content filters to scan incoming email attachments on the ESA or services scanning content of web access on the WSA. EPSS estimates a 1.93% chance of exploitation in the next 30 days.

Description

A vulnerability in the Multipurpose Internet Mail Extensions (MIME) scanner of Cisco AsyncOS Software for Cisco Email Security Appliances (ESA) and Web Security Appliances (WSA) could allow an unauthenticated, remote attacker to bypass configured user filters on the device. Affected Products: This vulnerability affects all releases prior to the first fixed release of Cisco AsyncOS Software for Cisco ESA and Cisco WSA, both virtual and hardware appliances, that are configured with message or content filters to scan incoming email attachments on the ESA or services scanning content of web access on the WSA. More Information: SCvb91473, CSCvc76500. Known Affected Releases: 10.0.0-203 9.9.9-894 WSA10.0.0-233.

Metrics

EPSS Probability
1.93%

77.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CiscoWeb Security Appliance10.0.0-082
CiscoWeb Security Appliance10.0.0-124
CiscoWeb Security Appliance10.0.0-125
CiscoWeb Security Appliance10.0.0-203
CiscoWeb Security Appliance10.0.0-232
CiscoEmail Security Appliance Firmware9.9.6-026
CiscoEmail Security Appliance Firmware9.9.9-894
CiscoEmail Security Appliance Firmware10.0.0-082
CiscoEmail Security Appliance Firmware10.0.0-124
CiscoEmail Security Appliance Firmware10.0.0-125
CiscoEmail Security Appliance Firmware10.0.0-203
CiscoEmail Security Appliance Firmware10.0.0-232

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2017-3827?
A vulnerability in the Multipurpose Internet Mail Extensions (MIME) scanner of Cisco AsyncOS Software for Cisco Email Security Appliances (ESA) and Web Security Appliances (WSA) could allow an unauthenticated, remote attacker to bypass configured user filters on the device. Affected Products: This vulnerability affects all releases prior to the first fixed release of Cisco AsyncOS Software for Cisco ESA and Cisco WSA, both virtual and hardware appliances, that are configured with message or content filters to scan incoming email attachments on the ESA or services scanning content of web access on the WSA. More Information: SCvb91473, CSCvc76500. Known Affected Releases: 10.0.0-203 9.9.9-894 WSA10.0.0-233.
How severe is CVE-2017-3827?
Severity scoring for CVE-2017-3827 is pending analysis. The EPSS model estimates a 1.93% probability of exploitation in the next 30 days.
How do I fix CVE-2017-3827?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST