Cisco AsyncOS 9.7.0-125 on Email Security Appliance ZIP Archive Spam input validation

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.5$5k-$25k0.00

Summaryinfo

A vulnerability identified as critical has been detected in Cisco AsyncOS 9.7.0-125 on Email Security Appliance. This impacts an unknown function of the component ZIP Archive Handler. The manipulation leads to input validation (Spam). This vulnerability is uniquely identified as CVE-2016-1438. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability was found in Cisco AsyncOS 9.7.0-125 on Email Security Appliance and classified as critical. This issue affects some unknown functionality of the component ZIP Archive Handler. The manipulation with an unknown input leads to a input validation vulnerability (Spam). Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Cisco AsyncOS 9.7.0-125 on Email Security Appliance (ESA) devices allows remote attackers to bypass intended spam filtering via crafted executable content in a ZIP archive, aka Bug ID CSCuy39210.

The weakness was disclosed 06/23/2016 as CSCuy39210 as confirmed advisory (Website). The advisory is shared at tools.cisco.com. The identification of this vulnerability is CVE-2016-1438 since 01/04/2016. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 08/24/2022).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.5

VulDB Base Score: 7.5
VulDB Temp Score: 7.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
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

Name: Spam
Class: Input validation / Spam
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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OpenVAS ID: 103403
OpenVAS Name: Cisco Email Security Appliance .zip File Scanning Security Bypass Vulnerability
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

Timelineinfo

01/04/2016 🔍
06/22/2016 +170 days 🔍
06/23/2016 +1 days 🔍
06/23/2016 +0 days 🔍
08/24/2022 +2253 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: CSCuy39210
Status: Confirmed

CVE: CVE-2016-1438 (🔍)
GCVE (CVE): GCVE-0-2016-1438
GCVE (VulDB): GCVE-100-88097
SecurityTracker: 1036156

Entryinfo

Created: 06/23/2016 11:39
Updated: 08/24/2022 14:33
Changes: 06/23/2016 11:39 (54), 02/07/2019 12:42 (9), 08/24/2022 14:33 (2)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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