Cisco IOS 12.2(33)SXJ9 ACL 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 was found in Cisco IOS 12.2(33)SXJ9. It has been classified as critical. Affected by this issue is some unknown functionality of the component ACL Handler. The manipulation leads to input validation. This vulnerability is traded as CVE-2016-6422. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in Cisco IOS 12.2(33)SXJ9 (Router Operating System) and classified as critical. This issue affects an unknown code block of the component ACL Handler. The manipulation with an unknown input leads to a input validation vulnerability. 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 IOS 12.2(33)SXJ9 on Supervisor Engine 32 and 720 modules for 6500 and 7600 devices mishandles certain operators, flags, and keywords in TCAM share ACLs, which allows remote attackers to bypass intended access restrictions by sending packets that should have been recognized by a filter, aka Bug ID CSCuy64806.

The weakness was shared 10/06/2016 as CSCuy64806 as confirmed advisory (Website). The advisory is shared at tools.cisco.com. The identification of this vulnerability is CVE-2016-6422 since 07/26/2016. 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 05/12/2019).

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 databases at SecurityFocus (BID 93404†) and SecurityTracker (ID 1036954†). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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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

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: 103403
OpenVAS Name: Cisco IOS Software for Cisco Catalyst 6500 Series Switches and 7600 Series Routers ACL Bypass 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 🔍
10/05/2016 +71 days 🔍
10/06/2016 +1 days 🔍
10/06/2016 +0 days 🔍
10/06/2016 +0 days 🔍
10/07/2016 +1 days 🔍
05/12/2019 +947 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: CSCuy64806
Status: Confirmed

CVE: CVE-2016-6422 (🔍)
GCVE (CVE): GCVE-0-2016-6422
GCVE (VulDB): GCVE-100-92489

OVAL: 🔍

SecurityFocus: 93404 - Cisco Catalyst 6500 Series Switches and 7600 Series Routers Information Disclosure Vulnerability
SecurityTracker: 1036954

Entryinfo

Created: 10/07/2016 13:09
Updated: 05/12/2019 20:07
Changes: 10/07/2016 13:09 (63), 05/12/2019 20:07 (11)
Complete: 🔍
Cache ID: 216::103

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

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