Crypto++ up to 8.6.0 Private Key MakePublicKey timing discrepancy ⚔ [Disputed]

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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3.9$0-$5k0.00

A vulnerability classified as problematic has been found in Crypto++ up to 8.6.0. Affected is the function MakePublicKey of the component Private Key Handler. The manipulation with an unknown input leads to a timing discrepancy vulnerability. CWE is classifying the issue as CWE-208. Two separate operations in a product require different amounts of time to complete, in a way that is observable to an actor and reveals security-relevant information about the state of the product, such as whether a particular operation was successful or not. This is going to have an impact on confidentiality.

The weakness was shared 11/05/2021 as 1080. The advisory is shared for download at github.com. This vulnerability is traded as CVE-2021-43398 since 11/04/2021. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1592.

The real existence of this vulnerability is still doubted at the moment.

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

The entries VDB-194343, VDB-203994, VDB-204743 and VDB-207064 are related to this item.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.9
VulDB Meta Temp Score: 3.9

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

NVD Base Score: 5.3
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: Timing discrepancy
CWE: CWE-208 / CWE-203 / CWE-200
CAPEC: 🔍
ATT&CK: 🔍

Local: No
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: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

11/04/2021 🔍
11/05/2021 +1 days 🔍
11/05/2021 +0 days 🔍
08/04/2024 +1003 days 🔍

Sourcesinfo

Advisory: 1080
Status: Confirmed
Disputed: 🔍

CVE: CVE-2021-43398 (🔍)
See also: 🔍

Entryinfo

Created: 11/05/2021 10:53 AM
Updated: 08/04/2024 07:09 AM
Changes: 11/05/2021 10:53 AM (37), 11/09/2021 09:31 PM (1), 08/04/2024 07:09 AM (35)
Complete: 🔍
Cache ID: 98:2EB:40

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