Digital Ocean Service improper authentication

CVSS Meta Temp Score
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CTI Interest Score
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5.9$0-$5k0.00

Summaryinfo

A vulnerability described as critical has been identified in Digital Ocean Service. This impacts an unknown function. Such manipulation leads to improper authentication. The attack may be performed from remote. There is no available exploit. Changing the configuration settings is recommended.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Digital Ocean Service (unknown version). Affected by this issue is an unknown code block. The manipulation with an unknown input leads to a improper authentication vulnerability. Using CWE to declare the problem leads to CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. Impacted is confidentiality, integrity, and availability.

The weakness was presented 01/27/2017 by Daniel Elebash as Digital Ocean ssh key authentication security risk -- password authentication is re-enabled as not defined mailinglist post (Full-Disclosure). The advisory is shared for download at seclists.org. The attack may be launched remotely. The requirement for exploitation is a simple authentication. There are neither technical details nor an exploit publicly available. The advisory points out:

PasswordAuthentication is reset to yes in /etc/ssh/sshd_config when using ssh key authentication given the following scenario: When creating a new droplet from a snapshot where ssh key authentication "PasswordAuthentication" in /etc/ssh/sshd_config was previosly set to no, "PasswordAuthentication" is reset to yes.

The advisory illustrates:

1. Create a new Ubuntu 16.04 droplet and secure it using ssh key authentication 2. Edit /etc/ssh/sshd_config and set PasswordAuthentication no 3. Reload ssh 4. Verify that you can log in using key authentication only, trying via password should be rejected. 5. Create a snapshot of this droplet 6. Create a new droplet from this snapshot 7. Open /etc/ssh/sshd_config and PasswordAuthentication will be reset to yes

It is possible to mitigate the problem by applying the configuration setting .

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Productinfo

Vendor

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 5.9

VulDB Base Score: 6.3
VulDB Temp Score: 5.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Improper authentication
CWE: CWE-287
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

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

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Config
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/27/2017 🔍
01/28/2017 +1 days 🔍
08/05/2020 +1285 days 🔍

Sourcesinfo

Advisory: Digital Ocean ssh key authentication security risk -- password authentication is re-enabled
Researcher: Daniel Elebash
Status: Not defined

GCVE (VulDB): GCVE-100-96248

Entryinfo

Created: 01/28/2017 22:39
Updated: 08/05/2020 20:52
Changes: 01/28/2017 22:39 (40), 08/05/2020 20:52 (1)
Complete: 🔍
Cache ID: 216::103

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