JetBrains Ktor up to 1.6.3 OAuth2 Authentication improper authentication

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.4$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in JetBrains Ktor up to 1.6.3. Affected is an unknown function of the component OAuth2 Authentication Handler. Executing a manipulation can lead to improper authentication. This vulnerability is registered as CVE-2021-43203. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in JetBrains Ktor up to 1.6.3. It has been declared as critical. This vulnerability affects an unknown functionality of the component OAuth2 Authentication Handler. The manipulation with an unknown input leads to a improper authentication vulnerability. The CWE definition for the vulnerability is CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was published 11/10/2021. The advisory is shared for download at blog.jetbrains.com. This vulnerability was named CVE-2021-43203 since 11/02/2021. There are neither technical details nor an exploit publicly available.

Upgrading to version 1.6.4 eliminates this vulnerability.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.4

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
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: Improper authentication
CWE: CWE-287
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: 🔍

Upgrade: Ktor 1.6.4

Timelineinfo

11/02/2021 🔍
11/10/2021 +8 days 🔍
11/10/2021 +0 days 🔍
11/12/2021 +2 days 🔍

Sourcesinfo

Advisory: blog.jetbrains.com
Status: Confirmed

CVE: CVE-2021-43203 (🔍)
GCVE (CVE): GCVE-0-2021-43203
GCVE (VulDB): GCVE-100-186460

Entryinfo

Created: 11/10/2021 13:03
Updated: 11/12/2021 11:10
Changes: 11/10/2021 13:03 (39), 11/12/2021 11:04 (1), 11/12/2021 11:10 (18)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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