CVE-2017-3818 : A vulnerability in the Multipurpose Internet Mail Extensions (MIME) scanner of C

A vulnerability in the Multipurpose Internet Mail Extensions (MIME) scanner of Cisco AsyncOS Software for Cisco Email Security Appliances (ESA) could allow an unauthenticated, remote attacker to bypass configured user filters on the device, aka a Malformed MIME Header Filtering Bypass. 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. More Information: CSCvb65245. Known Affected Releases: 9.7.1-066. Known Fixed Releases: 9.8.0-092.

Published 2017-02-03 07:59:01

Updated 2017-07-25 01:29:09

Source Cisco Systems, Inc.

View at NVD, CVE.org

Vulnerability category: Input validation

Products affected by CVE-2017-3818

Cisco » Email Security Appliance Firmware » Version: 9.7.1-066
cpe:2.3:o:cisco:email_security_appliance_firmware:9.7.1-066:*:*:*:*:*:*:*
Matching versions

Exploit prediction scoring system (EPSS) score for CVE-2017-3818

EPSS FAQ

0.13%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 49 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2017-3818

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
5.0	MEDIUM	AV:N/AC:L/Au:N/C:N/I:P/A:N	10.0	2.9	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: None Integrity Impact: Partial Availability Impact: None
5.8	MEDIUM	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N	3.9	1.4	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Changed Confidentiality: None Integrity: Low Availability: None

CWE ids for CVE-2017-3818

CWE-20 Improper Input Validation

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

Assigned by: nvd@nist.gov (Primary)

References for CVE-2017-3818

http://www.securitytracker.com/id/1037773

Cisco Email Security Appliance Bug in MIME Scanner Lets Remote Users Bypass Security Filters on the Target System - SecurityTracker
http://www.securityfocus.com/bid/95939

Cisco Email Security Appliance for AsyncOS CVE-2017-3818 Remote Security Bypass Vulnerability
Third Party Advisory;VDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170201-esa1

Cisco Email Security Appliance Malformed MIME Header Filtering Bypass Vulnerability
Vendor Advisory

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Vulnerability Details : CVE-2017-3818

Products affected by CVE-2017-3818

Exploit prediction scoring system (EPSS) score for CVE-2017-3818

CVSS scores for CVE-2017-3818

CWE ids for CVE-2017-3818

References for CVE-2017-3818