Cisco Application Control Engine Module up to 3.3 SSL/TLS input validation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.5$5k-$25k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in Cisco Application Control Engine Module up to 3.3. This issue affects some unknown processing of the component SSL/TLS Handler. This manipulation causes input validation. This vulnerability appears as CVE-2016-6399. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability classified as critical was found in Cisco Application Control Engine Module up to 3.3. Affected by this vulnerability is some unknown functionality of the component SSL/TLS Handler. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect availability. The summary by CVE is:

Cisco ACE30 Application Control Engine Module through A5 3.3 and ACE 4700 Application Control Engine appliances through A5 3.3 allow remote attackers to cause a denial of service (device reload) via crafted (1) SSL or (2) TLS packets, aka Bug ID CSCvb16317.

The weakness was presented 09/12/2016 with Cisco as CSCvb16317 as confirmed advisory (Website). The advisory is shared at tools.cisco.com. This vulnerability is known as CVE-2016-6399 since 07/26/2016. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. 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 09/16/2022).

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

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 92867†). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

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Version

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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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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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OpenVAS ID: 880959
OpenVAS Name: Cisco ACE 4710 Application Control Engine Denial of Service Vulnerability
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

07/26/2016 🔍
09/08/2016 +44 days 🔍
09/12/2016 +4 days 🔍
09/12/2016 +0 days 🔍
09/13/2016 +1 days 🔍
09/16/2022 +2194 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: CSCvb16317
Organization: Cisco
Status: Confirmed

CVE: CVE-2016-6399 (🔍)
GCVE (CVE): GCVE-0-2016-6399
GCVE (VulDB): GCVE-100-91513
SecurityFocus: 92867 - Cisco ACE CVE-2016-6399 Denial of Service Vulnerability
SecurityTracker: 1036748

Entryinfo

Created: 09/13/2016 17:59
Updated: 09/16/2022 08:09
Changes: 09/13/2016 17:59 (53), 04/16/2019 10:33 (13), 09/16/2022 08:09 (3)
Complete: 🔍
Cache ID: 216::103

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

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