Cisco Email Security Appliance up to 9.0 Content Filter Email Attachment input validation
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
5.4 | $0-$5k | 0.00 |
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 vulnerability database at Tenable (103459).
Product
Type
Vendor
Name
Version
License
Support
- end of life (old version)
CPE 2.3
CPE 2.2
CVSSv4
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CVSSv3
VulDB Meta Base Score: 5.7VulDB Meta Temp Score: 5.6
VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 7.1
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CVSSv2
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Exploiting
Class: Input validationCWE: CWE-20
ATT&CK: Unknown
Local: No
Remote: Yes
Availability: 🔍
Status: Not defined
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EPSS Percentile: 🔍
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Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
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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 Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔍
Timeline
08/03/2017 🔍09/20/2017 🔍
09/20/2017 🔍
09/20/2017 🔍
09/21/2017 🔍
09/21/2017 🔍
09/21/2017 🔍
09/25/2017 🔍
01/13/2021 🔍
Sources
Vendor: cisco.comAdvisory: securitytracker.com⛔
Researcher: Cisco
Organization: Cisco
Status: Not defined
Confirmation: 🔍
CVE: CVE-2017-12215 (🔍)
SecurityTracker: 1039414
SecurityFocus: 100920 - Cisco AsyncOS Software CVE-2017-12215 Remote Denial of Service Vulnerability
Entry
Created: 09/21/2017 21:45Updated: 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: 🔍
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