VDB-119542 · CVE-2018-7559 · BID 108688

OPC UA .NET Standard/UA .NET Legacy Key key management

CVSS Meta Temp Score
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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.
4.1$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in OPC UA .NET Standard and UA .NET Legacy. Impacted is an unknown function. Executing a manipulation can lead to key management (Key). This vulnerability is tracked as CVE-2018-7559. The attack can be launched remotely. No exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability has been found in OPC UA .NET Standard and UA .NET Legacy (the affected version unknown) and classified as problematic. This vulnerability affects an unknown part. The manipulation with an unknown input leads to a key management vulnerability (Key). The CWE definition for the vulnerability is CWE-320. As an impact it is known to affect confidentiality. CVE summarizes:

An issue was discovered in OPC UA .NET Standard Stack and Sample Code before GitHub commit 2018-04-12, and OPC UA .NET Legacy Stack and Sample Code before GitHub commit 2018-03-13. A vulnerability in OPC UA applications can allow a remote attacker to determine a Server's private key by sending carefully constructed bad UserIdentityTokens as part of an oracle attack.

The bug was discovered 04/12/2018. The weakness was disclosed 06/13/2018 (Website). The advisory is available at github.com. This vulnerability was named CVE-2018-7559 since 02/28/2018. The attack can be initiated remotely. A single authentication is necessary for exploitation. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1600.001 by the MITRE ATT&CK project.

The vulnerability was handled as a non-public zero-day exploit for at least 62 days. During that time the estimated underground price was around $0-$5k.

Upgrading eliminates this vulnerability.

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Productinfo

Vendor

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.2
VulDB Meta Temp Score: 4.1

VulDB Base Score: 3.1
VulDB Temp Score: 3.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.3
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

Name: Key
Class: Key management / Key
CWE: CWE-320
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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Patch: github.com

Timelineinfo

02/28/2018 🔍
04/12/2018 +43 days 🔍
06/13/2018 +61 days 🔍
06/13/2018 +0 days 🔍
06/14/2018 +1 days 🔍
03/27/2023 +1747 days 🔍

Sourcesinfo

Advisory: e2a781b38efb8686d2bd850c2f2372b5c670bc45
Status: Not defined
Confirmation: 🔍

CVE: CVE-2018-7559 (🔍)
GCVE (CVE): GCVE-0-2018-7559
GCVE (VulDB): GCVE-100-119542
SecurityFocus: 108688

Entryinfo

Created: 06/14/2018 08:39
Updated: 03/27/2023 12:14
Changes: 06/14/2018 08:39 (57), 02/19/2020 13:16 (2), 03/27/2023 12:14 (6)
Complete: 🔍
Cache ID: 216::103

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