Cisco Email Security Appliance Advanced Malware Protection Email Attachment input validation

CVSS Meta Temp Score
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in Cisco Email Security Appliance. This affects an unknown part of the component Advanced Malware Protection. The manipulation as part of Email Attachment results in input validation. This vulnerability was named CVE-2017-12218. The attack may be performed from remote. There is no available exploit. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as critical has been found in Cisco Email Security Appliance (Anti-Malware Software) (version unknown). Affected is an unknown function of the component Advanced Malware Protection. The manipulation as part of a Email Attachment leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. 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. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

A vulnerability in the malware detection functionality within Advanced Malware Protection (AMP) of Cisco AsyncOS Software for Cisco Email Security Appliances (ESAs) could allow an unauthenticated, remote attacker to cause an email attachment containing malware to be delivered to the end user. The vulnerability is due to the failure of AMP to scan certain EML attachments that could contain malware. An attacker could exploit this vulnerability by sending an email with a crafted EML attachment through the targeted device. A successful exploit could allow the attacker to bypass the configured ESA email message and content filtering and allow the malware to be delivered to the end user. Vulnerable Products: This vulnerability affects Cisco AsyncOS Software for Cisco ESA, both virtual and hardware appliances, that are configured with message or content filters to scan incoming email attachments on the ESA. Cisco Bug IDs: CSCuz81533.

The bug was discovered 09/06/2017. The weakness was presented 09/07/2017 with Cisco as cisco-sa-20170906-esa as confirmed advisory (Website). The advisory is available at tools.cisco.com. This vulnerability is traded as CVE-2017-12218 since 08/03/2017. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. The technical details are unknown and an exploit is not available.

The vulnerability scanner Nessus provides a plugin with the ID 103049 (Cisco Email Security Appliance Malformed EML Attachment Bypass Vulnerability (cisco-sa-20170906-esa)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CISCO and running in the context c. The commercial vulnerability scanner Qualys is able to test this issue with plugin 316251 (Cisco Email Security Appliance Malformed EML Attachment Bypass Vulnerability(cisco-sa-20170906-esa)).

Upgrading eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (103049) and SecurityFocus (BID 100681†). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.6
VulDB Meta Temp Score: 6.4

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 103049
Nessus Name: Cisco Email Security Appliance Malformed EML Attachment Bypass Vulnerability (cisco-sa-20170906-esa)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

08/03/2017 🔍
09/06/2017 +34 days 🔍
09/06/2017 +0 days 🔍
09/06/2017 +0 days 🔍
09/07/2017 +1 days 🔍
09/07/2017 +0 days 🔍
09/08/2017 +1 days 🔍
09/08/2017 +0 days 🔍
01/11/2021 +1221 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-20170906-esa
Researcher: Cisco
Organization: Cisco
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-12218 (🔍)
GCVE (CVE): GCVE-0-2017-12218
GCVE (VulDB): GCVE-100-106218
SecurityFocus: 100681 - Cisco AsyncOS Software CVE-2017-12218 Remote Security Bypass Vulnerability
SecurityTracker: 1039288

Entryinfo

Created: 09/08/2017 11:57
Updated: 01/11/2021 09:14
Changes: 09/08/2017 11:57 (63), 11/13/2019 15:57 (13), 01/11/2021 09:12 (2), 01/11/2021 09:14 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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