Rapid7 Nexpose Hardware Appliance SSH Key Exchange Config risky encryption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.7$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Rapid7 Nexpose Hardware Appliance. Impacted is an unknown function of the component SSH Key Exchange Config. This manipulation causes risky encryption. The identification of this vulnerability is CVE-2017-5243. It is possible to initiate the attack remotely. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Rapid7 Nexpose Hardware Appliance (affected version unknown) and classified as critical. Affected by this vulnerability is an unknown functionality of the component SSH Key Exchange Config. The manipulation with an unknown input leads to a risky encryption vulnerability. The CWE definition for the vulnerability is CWE-327. The product uses a broken or risky cryptographic algorithm or protocol. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

The default SSH configuration in Rapid7 Nexpose hardware appliances shipped before June 2017 does not specify desired algorithms for key exchange and other important functions. As a result, it falls back to allowing ALL algorithms supported by the relevant version of OpenSSH and makes the installations vulnerable to a range of MITM, downgrade, and decryption attacks.

The bug was discovered 05/31/2017. The weakness was shared 06/06/2017 (Website). It is possible to read the advisory at community.rapid7.com. This vulnerability is known as CVE-2017-5243 since 01/09/2017. The exploitation appears to be difficult. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1600 according to MITRE ATT&CK.

The vulnerability was handled as a non-public zero-day exploit for at least 6 days. During that time the estimated underground price was around $0-$5k.

Upgrading eliminates this vulnerability.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.0
VulDB Meta Temp Score: 6.9

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

NVD Base Score: 8.5
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: Risky encryption
CWE: CWE-327 / CWE-310
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: 🔍

Timelineinfo

01/09/2017 🔍
05/31/2017 +142 days 🔍
06/06/2017 +6 days 🔍
06/06/2017 +0 days 🔍
06/07/2017 +1 days 🔍
10/14/2019 +859 days 🔍

Sourcesinfo

Advisory: community.rapid7.com
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-5243 (🔍)
GCVE (CVE): GCVE-0-2017-5243
GCVE (VulDB): GCVE-100-102019

Entryinfo

Created: 06/07/2017 08:36
Updated: 10/14/2019 09:16
Changes: 06/07/2017 08:36 (56), 10/14/2019 09:16 (2)
Complete: 🔍
Cache ID: 216::103

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