Dell UEFI BIOS HTTPS Stack certificate validation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.6$5k-$25k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Dell UEFI BIOS. The affected element is an unknown function of the component HTTPS Stack. This manipulation causes certificate validation. This vulnerability is registered as CVE-2021-21571. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability classified as critical was found in Dell UEFI BIOS (affected version unknown). Affected by this vulnerability is an unknown functionality of the component HTTPS Stack. The manipulation with an unknown input leads to a certificate validation vulnerability. The CWE definition for the vulnerability is CWE-295. The product does not validate, or incorrectly validates, a certificate. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was published 06/25/2021 as 000188682. It is possible to read the advisory at dell.com. This vulnerability is known as CVE-2021-21571. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 06/25/2021). The attack technique deployed by this issue is T1587.003 according to MITRE ATT&CK.

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

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.6
VulDB Meta Temp Score: 5.6

VulDB Base Score: 5.6
VulDB Temp Score: 5.6
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: Certificate validation
CWE: CWE-295 / 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: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/04/2021 🔍
06/25/2021 +171 days 🔍
06/25/2021 +0 days 🔍
07/02/2021 +7 days 🔍

Sourcesinfo

Vendor: dell.com

Advisory: 000188682
Status: Confirmed

CVE: CVE-2021-21571 (🔍)
GCVE (CVE): GCVE-0-2021-21571
GCVE (VulDB): GCVE-100-177535

Entryinfo

Created: 06/25/2021 08:25
Updated: 07/02/2021 07:21
Changes: 06/25/2021 08:25 (36), 07/02/2021 07:15 (2), 07/02/2021 07:21 (1)
Complete: 🔍
Cache ID: 216::103

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