Cisco Embedded Device X.509 Certificate certificate 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.
5.6	$0-$5k	0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Cisco Embedded Device. This affects an unknown function of the component X.509 Certificate. The manipulation results in certificate validation. This vulnerability was named CVE-2015-6358. The attack may be performed from remote. There is no available exploit. Applying a patch is advised to resolve this issue.

Detailsinfo

A vulnerability was found in Cisco Embedded Device (affected version unknown). It has been classified as critical. Affected is an unknown functionality of the component X.509 Certificate. The manipulation with an unknown input leads to a certificate validation vulnerability. CWE is classifying the issue as CWE-295. The product does not validate, or incorrectly validates, a certificate. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Multiple Cisco embedded devices use hardcoded X.509 certificates and SSH host keys embedded in the firmware, which allows remote attackers to defeat cryptographic protection mechanisms and conduct man-in-the-middle attacks by leveraging knowledge of these certificates and keys from another installation, aka Bug IDs CSCuw46610, CSCuw46620, CSCuw46637, CSCuw46654, CSCuw46665, CSCuw46672, CSCuw46677, CSCuw46682, CSCuw46705, CSCuw46716, CSCuw46979, CSCuw47005, CSCuw47028, CSCuw47040, CSCuw47048, CSCuw47061, CSCuw90860, CSCuw90869, CSCuw90875, CSCuw90881, CSCuw90899, and CSCuw90913.

The bug was discovered 11/25/2015. The weakness was presented 10/12/2017 by Stefan Viehböck with SEC Consult as cisco-sa-20151125-ci / CSCuw46610 / CSCuw46620 / CSCuw46637 / CSCuw46654 / CSCuw46665 / CSCuw46672 / CSCuw46677 / CSCuw46682 / CSCuw46705 / CSCuw46716 / CSCuw46979 / CSCuw47005 / CSCuw47028 / CSCuw47040 as confirmed advisory (Website). The advisory is shared for download at tools.cisco.com. This vulnerability is traded as CVE-2015-6358 since 08/17/2015. 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 MITRE ATT&CK project declares the attack technique as T1587.003.

The vulnerability was handled as a non-public zero-day exploit for at least 687 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 121007 (SSH Known Hard Coded Private Keys), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Misc. and running in the context r.

Applying a patch is able to eliminate this problem.

The vulnerability is also documented in the databases at Tenable (121007) and SecurityFocus (BID 78047†). See VDB-105880, VDB-107106, VDB-107190 and VDB-145108 for similar entries. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

Cisco

Name

Embedded Device

License

commercial

Website

Vendor: https://www.cisco.com/

CPE 2.3info

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CPE 2.2info

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CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.7
VulDB Meta Temp Score: 5.6

VulDB Base Score: 5.6
VulDB Temp Score: 5.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.9
NVD Vector: 🔍

CVSSv2info

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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
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Exploitinginfo

Class: Certificate validation
CWE: CWE-295 / CWE-287
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
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Nessus ID: 121007
Nessus Name: SSH Known Hard Coded Private Keys
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 802459
OpenVAS Name: Cisco Small Business RV Series Confidential Information Decryption Man-in-the-Middle Vulnerability
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Timelineinfo

08/17/2015 🔍
11/25/2015 +100 days 🔍
11/25/2015 +0 days 🔍
10/12/2017 +687 days 🔍
10/12/2017 +0 days 🔍
10/13/2017 +1 days 🔍
01/08/2019 +452 days 🔍
12/21/2024 +2174 days 🔍