OpenBSD 6.6 S-Key/Yubikey improper authentication

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.8$0-$5k0.00

Summaryinfo

A vulnerability was found in OpenBSD 6.6. It has been declared as critical. Affected is an unknown function of the component S-Key/Yubikey Handler. Such manipulation leads to improper authentication. This vulnerability is traded as CVE-2019-19522. An attack has to be approached locally. There is no exploit available.

Detailsinfo

A vulnerability, which was classified as critical, has been found in OpenBSD 6.6 (Operating System). Affected by this issue is some unknown processing of the component S-Key/Yubikey Handler. 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. CVE summarizes:

OpenBSD 6.6, in a non-default configuration where S/Key or YubiKey authentication is enabled, allows local users to become root by leveraging membership in the auth group. This occurs because root's file can be written to /etc/skey or /var/db/yubikey, and need not be owned by root.

The weakness was shared 12/05/2019. This vulnerability is handled as CVE-2019-19522. The attack needs to be approached locally. Required for exploitation is a simple authentication. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 03/07/2024).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The entries VDB-146683, VDB-146682 and VDB-146681 are related to this item. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.8
VulDB Meta Temp Score: 7.8

VulDB Base Score: 7.8
VulDB Temp Score: 7.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
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: Improper authentication
CWE: CWE-287
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

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: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

12/03/2019 🔍
12/05/2019 +2 days 🔍
12/05/2019 +0 days 🔍
03/07/2024 +1554 days 🔍

Sourcesinfo

Advisory: 155572
Status: Not defined

CVE: CVE-2019-19522 (🔍)
GCVE (CVE): GCVE-0-2019-19522
GCVE (VulDB): GCVE-100-146684
See also: 🔍

Entryinfo

Created: 12/05/2019 08:26
Updated: 03/07/2024 13:39
Changes: 12/05/2019 08:26 (36), 12/05/2019 08:31 (17), 03/07/2024 13:33 (5), 03/07/2024 13:39 (1)
Complete: 🔍
Cache ID: 216::103

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