Cisco IOS 15.2(04)M6/15.4(03)S ACL Filter input validation

CVSS Meta Temp Score
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CTI Interest Score
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7.0$0-$5k0.00

Summaryinfo

A vulnerability was found in Cisco IOS 15.2(04)M6/15.4(03)S. It has been classified as critical. This vulnerability affects unknown code of the component ACL. Performing a manipulation results in input validation (Filter). This vulnerability was named CVE-2015-6366. There is no available exploit. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as critical, was found in Cisco IOS 15.2(04)M6/15.4(03)S (Router Operating System). This affects an unknown code block of the component ACL. The manipulation with an unknown input leads to a input validation vulnerability (Filter). 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 confidentiality, integrity, and availability. The summary by CVE is:

Cisco IOS 15.2(04)M6 and 15.4(03)S lets physical-interface ACLs supersede tunnel-interface ACLs, which allows remote attackers to bypass intended network-traffic restrictions in opportunistic circumstances by using a tunnel, aka Bug ID CSCur01042.

The weakness was presented 11/13/2015 with Cisco as cisco-sa-20151112-ios2 / CSCur01042 as confirmed advisory (Website). It is possible to read the advisory at tools.cisco.com. This vulnerability is uniquely identified as CVE-2015-6366 since 08/17/2015. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 86951 (Cisco IOS Tunnel Interfaces Security Bypass), 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 43447 (Cisco IOS Software Tunnel Interfaces Security Bypass Vulnerability (cisco-sa-20151112-ios2)).

Upgrading eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (86951), SecurityFocus (BID 77569†) and Vulnerability Center (SBV-54389†). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Name: Filter
Class: Input validation / Filter
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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Nessus ID: 86951
Nessus Name: Cisco IOS Tunnel Interfaces Security Bypass
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 103403
OpenVAS Name: Cisco IOS Software Tunnel Interfaces Security Bypass Vulnerability
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

08/17/2015 🔍
11/12/2015 +87 days 🔍
11/12/2015 +0 days 🔍
11/12/2015 +0 days 🔍
11/12/2015 +0 days 🔍
11/13/2015 +1 days 🔍
11/13/2015 +0 days 🔍
11/15/2015 +2 days 🔍
11/19/2015 +4 days 🔍
11/18/2024 +3287 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-20151112-ios2 / CSCur01042
Organization: Cisco
Status: Confirmed

CVE: CVE-2015-6366 (🔍)
GCVE (CVE): GCVE-0-2015-6366
GCVE (VulDB): GCVE-100-79203

OVAL: 🔍

SecurityFocus: 77569 - Cisco IOS Software CVE-2015-6366 Security Bypass Vulnerability
SecurityTracker: 1034141
Vulnerability Center: 54389 - [cisco-sa-20151112-ios2] Cisco IOS 15.2(04)M6 and 15.4(03)S Remote Security Compromise via Tunnel Interfaces, Medium

Entryinfo

Created: 11/13/2015 13:59
Updated: 11/18/2024 09:46
Changes: 11/13/2015 13:59 (59), 04/12/2018 17:08 (16), 06/27/2022 12:43 (3), 11/18/2024 09:46 (16)
Complete: 🔍
Cache ID: 216::103

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