Cisco Email Security Appliance up to 9.0 Content Filter Email Attachment input validation

CVSS Meta Temp Score
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CTI Interest Score
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5.4$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic was found in Cisco Email Security Appliance up to 9.0. Affected by this issue is some unknown functionality of the component Content Filter. The manipulation as part of Email Attachment results in input validation. This vulnerability is reported as CVE-2017-12215. The attack requires a local approach. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Cisco Email Security Appliance up to 9.0 (Anti-Malware Software). Affected is an unknown function of the component Content Filter. 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 availability. CVE summarizes:

A vulnerability in the email message filtering feature of Cisco AsyncOS Software for the Cisco Email Security Appliance could allow an unauthenticated, remote attacker to cause an affected device to run out of memory and stop scanning and forwarding email messages. When system memory is depleted, it can cause the filtering process to crash, resulting in a denial of service (DoS) condition on the device. This vulnerability affects software version 9.0 through 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. Cisco Bug IDs: CSCvd29354.

The bug was discovered 09/20/2017. The weakness was disclosed 09/21/2017 with Cisco (Website). The advisory is shared for download at securitytracker.com. This vulnerability is traded as CVE-2017-12215 since 08/03/2017. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 103459 (Cisco Email Security Appliance Denial of Service Vulnerability), 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 l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 316169 (Cisco Email Security Appliance Denial of Service Vulnerability (cisco-sa-20170920-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 (103459) and SecurityFocus (BID 100920†). Once again VulDB remains the best source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.7
VulDB Meta Temp Score: 5.6

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.1
NVD Vector: 🔍

CVSSv2info

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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: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 103459
Nessus Name: Cisco Email Security Appliance Denial of Service Vulnerability
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 🔍
09/20/2017 +48 days 🔍
09/20/2017 +0 days 🔍
09/20/2017 +0 days 🔍
09/21/2017 +1 days 🔍
09/21/2017 +0 days 🔍
09/21/2017 +0 days 🔍
09/25/2017 +4 days 🔍
01/13/2021 +1206 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: securitytracker.com⛔
Researcher: Cisco
Organization: Cisco
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-12215 (🔍)
GCVE (CVE): GCVE-0-2017-12215
GCVE (VulDB): GCVE-100-106932
SecurityFocus: 100920 - Cisco AsyncOS Software CVE-2017-12215 Remote Denial of Service Vulnerability
SecurityTracker: 1039414

Entryinfo

Created: 09/21/2017 21:45
Updated: 01/13/2021 16:37
Changes: 09/21/2017 21:45 (69), 11/18/2019 12:01 (6), 01/13/2021 16:34 (3), 01/13/2021 16:37 (1)
Complete: 🔍
Cache ID: 216::103

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