openCryptoki Private Key C_CreateObject/C_DeriveKey information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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4.0$0-$5k0.00

Summaryinfo

A vulnerability was found in openCryptoki and classified as problematic. Affected by this vulnerability is the function C_CreateObject/C_DeriveKey of the component Private Key Handler. Executing a manipulation can lead to information disclosure. The identification of this vulnerability is CVE-2021-3798. There is no exploit available. Applying a patch is advised to resolve this issue.

Detailsinfo

A vulnerability classified as problematic was found in openCryptoki (the affected version is unknown). This vulnerability affects the function C_CreateObject/C_DeriveKey of the component Private Key Handler. The manipulation with an unknown input leads to a information disclosure vulnerability. The CWE definition for the vulnerability is CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. As an impact it is known to affect confidentiality. CVE summarizes:

A flaw was found in openCryptoki. The openCryptoki Soft token does not check if an EC key is valid when an EC key is created via C_CreateObject, nor when C_DeriveKey is used with ECDH public data. This may allow a malicious user to extract the private key by performing an invalid curve attack.

The weakness was shared 08/24/2022. The advisory is shared for download at github.com. This vulnerability was named CVE-2021-3798 since 09/13/2021. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1592.

Applying the patch 4e3b43c3d8844402c04a66b55c6c940f965109f0 is able to eliminate this problem. The bugfix is ready for download at github.com.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.0
VulDB Meta Temp Score: 4.0

VulDB Base Score: 2.6
VulDB Temp Score: 2.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

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: Patch
Status: 🔍

0-Day Time: 🔍

Patch: 4e3b43c3d8844402c04a66b55c6c940f965109f0

Timelineinfo

09/13/2021 🔍
08/24/2022 +345 days 🔍
08/24/2022 +0 days 🔍
09/25/2022 +32 days 🔍

Sourcesinfo

Product: github.com

Advisory: 4e3b43c3d8844402c04a66b55c6c940f965109f0
Status: Confirmed

CVE: CVE-2021-3798 (🔍)
GCVE (CVE): GCVE-0-2021-3798
GCVE (VulDB): GCVE-100-207064

Entryinfo

Created: 08/24/2022 09:14
Updated: 09/25/2022 09:27
Changes: 08/24/2022 09:14 (40), 09/25/2022 09:23 (1), 09/25/2022 09:27 (11)
Complete: 🔍
Cache ID: 216::103

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