VDB-124833 · CVE-2018-0434 · BID 105294

Cisco SD-WAN Solution Zero Touch Provisioning Crafted 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.
6.1	$0-$5k	0.00

A vulnerability, which was classified as problematic, was found in Cisco SD-WAN Solution (Network Management Software) (the affected version unknown). This affects some unknown functionality of the component Zero Touch Provisioning. The manipulation as part of a Crafted Certificate leads to a weak authentication vulnerability. CWE is classifying the issue as CWE-295. This is going to have an impact on confidentiality.

The bug was discovered 09/05/2018. The weakness was presented 10/05/2018 with Cisco as cisco-sa-20180905-sd-wan-valid as confirmed advisory (Website). The advisory is shared at tools.cisco.com. This vulnerability is uniquely identified as CVE-2018-0434 since 11/26/2017. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1587.003 for this issue.

The vulnerability was handled as a non-public zero-day exploit for at least 30 days. During that time the estimated underground price was around $5k-$25k.

Upgrading eliminates this vulnerability.

See 124832 and 124831 for similar entries.

Productinfoedit

Type

Network Management Software

Vendor

Cisco

Name

SD-WAN Solution

CPE 2.3infoedit

🔍

CPE 2.2infoedit

🔍

CVSSv3infoedit

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.2

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.4
NVD Vector: 🔍

CVSSv2infoedit

AV	AC	Au	C	I	A
🔍	🔍	🔍	🔍	🔍	🔍
🔍	🔍	🔍	🔍	🔍	🔍
🔍	🔍	🔍	🔍	🔍	🔍

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfoedit

Class: Weak authentication
CWE: CWE-295
ATT&CK: T1587.003

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Threat Intelligenceinfoedit

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

Countermeasuresinfoedit

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: tools.cisco.com

Timelineinfoedit

11/26/2017 🔍
09/05/2018 +282 days 🔍
09/05/2018 +0 days 🔍
10/05/2018 +29 days 🔍
10/05/2018 +0 days 🔍
10/06/2018 +1 days 🔍
03/30/2020 +541 days 🔍

Sourcesinfoedit

Vendor: cisco.com

Advisory: cisco-sa-20180905-sd-wan-valid
Organization: Cisco
Status: Confirmed

CVE: CVE-2018-0434 (🔍)
SecurityFocus: 105294 - Cisco SD-WAN CVE-2018-0434 Certificate Validation Security Bypass Vulnerability

See also: 🔍

Entryinfoedit

Created: 10/06/2018 07:49 AM
Updated: 03/30/2020 09:06 AM
Changes: (4) vulnerability_discoverydate advisory_company_name source_securityfocus_date source_securityfocus_class
Complete: 🔍